<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>50238</id>
    <completedYear/>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>109390</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>122</volume>
    <type>article</type>
    <publisherName>Elsevier Ltd.</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Sulfur's role in the flame retardancy of thio-ether–linked hyperbranched polyphosphoesters in epoxy resins</title>
    <abstract language="eng">Hyperbranched polyphosphoesters are promising multifunctional flame retardants for epoxy resins. These polymers were prepared via thiol-ene polyaddition reactions. While key chemical transformations and modes of actions were elucidated, the role of sulfur in the chemical composition remains an open question. In this study, the FR-performance of a series of phosphorus-based flame retardant additives with and without sulfur (thioethers or sulfones) in their structure are compared. The successful synthesis of thio-ether or sulfone-containing variants is described and verified by 1H and 31P NMR, also FTIR and MALDI-TOF. A decomposition process is proposed from pyrolytic evolved gas analysis (TG-FTIR, Py-GC/MS), and flame retardancy effect on epoxy resins is investigated under pyrolytic conditions and via fire testing in the cone calorimeter. The presence of sulfur increased thermal stability of the flame retardants and introduced added condensed phase action. Likely, Sulfur radical generation plays a key role in the flame-retardant mode of action, and sulfones released incombustible SO2. The results highlight the multifunctionality of the hyperbranched polymer, which displays better fire performance than its low molar mass thio-ether analogue due to the presence of vinyl groups and higher stability than its monomer due to the presence of thio-ether groups.</abstract>
    <parentTitle language="eng">European Polymer Journal</parentTitle>
    <identifier type="issn">0014-3057</identifier>
    <identifier type="doi">10.1016/j.eurpolymj.2019.109390</identifier>
    <enrichment key="date_peer_review">05.03.2020</enrichment>
    <author>Alexander Battig</author>
    <author>J. C. Markwart</author>
    <author>F. R. Wurm</author>
    <author>Bernhard Schartel</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Phosphoester</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Hyperbranched</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Sulfur</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Thio-ether</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Flame retardant</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Epoxy resin</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.5 Technische Eigenschaften von Polymerwerkstoffen</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="themenfelder" number="">Fire Science</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>54845</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>6313</pageFirst>
    <pageLast>6324</pageLast>
    <pageNumber/>
    <edition/>
    <issue>19</issue>
    <volume>10</volume>
    <type>article</type>
    <publisherName>ACS</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Tenebrio molitor Beetle as a “Nonvegan” Adjuvant to Flame Retardants in Tannic Acid-Based Epoxy Thermosets</title>
    <abstract language="eng">Material solutions that meet both circular bioeconomy policies and high technical requirements have become a matter of particular interest. In this work, a prospectively abundant proteinrich waste resource for the manufacturing of flame-retardant epoxy biocomposites, as well as for the synthesis of biobased flame retardants or adjuvants, is introduced. Different biomass fillers sourced from the cultivation of the mealworm beetle Tenebrio molitor are embedded in a bioepoxy resin cured with tannic acid and investigated regarding the fire performance of the thermosets. By means of spectroscopic and thermal analysis (attenuated total reflectance FTIR spectroscopy, thermogravimetric analysis-coupled FTIR spectroscopy, and differential scanning calorimetry), the influence of the biomass microparticles on the curing and thermal degradation behavior is evaluated. The final performance of the biocomposites is assessed based on fire testing methodology (limited oxygen index, UL-94, and cone calorimetry). Providing a high charring efficiency in the specific tannic acid-based epoxy matrix, the protein-rich adult beetle is further investigated in combination with commercial environmentally benign flame retardants in view of its potential as an adjuvant. The results highlight a char forming effect of nonvegan fillers in the presence of tannic acid, particularly during thermal decomposition, and point toward the potential of protein-based flame retardants from industrial insect rearing for future formulations.</abstract>
    <parentTitle language="eng">ACS Sustainable Chemistry &amp; Engineering</parentTitle>
    <identifier type="issn">2168-0485</identifier>
    <identifier type="doi">10.1021/acssuschemeng.2c00746</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">13.06.2022</enrichment>
    <author>F. Robert Gleuwitz</author>
    <author>Alexander Battig</author>
    <author>Bernhard Schartel</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Tannic acid</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Flame retardancy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Sustainable</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Epoxy resin</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Insects</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="ddc" number="628">Sanitär- und Kommunaltechnik; Umwelttechnik</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.5 Technische Eigenschaften von Polymerwerkstoffen</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="themenfelder" number="">Fire Science</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="themenfelder" number="">Circular Economy</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>40948</id>
    <completedYear/>
    <publishedYear>2017</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>poster</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Hyperbranched Polyphosphoesters, -di/amidates and –amides as Novel Flame Retardants for Epoxy Resins: Understanding the Role of Chemical Composition</title>
    <abstract language="eng">The use of phosphorus-containing flame retardants as a viable alternative to their widely used halogen-containing counterparts has been the source of much recent research. As the search for an effective flame retardant for specific polymeric systems continues, a new class of flame retardants have shown promising results, namely hyperbranched polyphosphoesters and their derivatives. These macromolecules promise to combine the effects of complex, hyperbranched structures with the flame retarding effects of phosphorus, enabling a high miscibility and processability, as well as a lower impact on glass transition temperature and decreased diffusion from the polymer matrix. These and other functions enable them to act as multifunctional additives.&#13;
&#13;
In recent times, phosphorus-based hyperbranched materials and their efficacy as flame retardants have been described in literature. Often, the inclusion of nitrogen atoms into the chemical surrounding of phosphorus has lead to reports of increased flame retarding performance through synergistic effects. However, a comprehensive study of the relationship between nitrogen and phosphorus in hyperbranched polymers is lacking. The aim of this work is to determine the efficacy of novel, phosphorus-based hyperbranched polymers compared to other, commercially available, previously studied flame retardants and to investigate the molecular flame retarding mechanism of these complex structured macromolecules.&#13;
&#13;
Among one of the key aspects here is the modification of the O:N ratio of the phosphorus-containing repeating units of these hyperbranched polymers. The newly described synthesis route yields trifunctional monomers of the desired composition, which undergo an A2+B3-type polymerization via radical thiol-ene reactions, producing polyphosphoesters, -amidates, -diamidates, or -amides, respectively. By precisely tailoring the nitrogen and oxygen ratio in the chemical surrounding of phosphorus, a more comprehensive picture of the structure-property relationship of these materials may be gained. Furthermore, by adjusting the aromaticity of the hydrocarbon moieties in these trifunctional monomers, an optimization of flame retarding properties, such as increased charring, is aimed to be achieved. Additionally, the trifunctional monomers themselves act as low molecular weight fire retardants; therefore, by comparing the performance of these monomers to their high molecular weight, hyperbranched, polymeric counterparts, an understanding of the role of molecular architecture in designing a more effective flame retardant can be gained. Finally, several epoxy resin matrices, common in high-tech industrial applications, are investigated in the interest of comprehending the interaction between these novel hyperbranched flame retardant additives and their surrounding polymeric matrix.&#13;
&#13;
In order to determine the flame retardancy mechanism of these materials, a multi-methodological approach is selected, thus offering a high volume of correlating data. Using Fourier-transform infrared spectroscopy (FTIR) coupled with thermogravimetric analysis (TGA), as well as pyrolysis combustion flow calorimetry (PCFC), provides evidence of mass loss processes, their respective decomposition products, and the heat released by volatiles in the gas phase during pyrolysis, while hot-stage FTIR offers information of the decomposition products occurring in the condensed phase. Limiting oxygen index (LOI) and UL-94 help to quantify and categorize the materials’ flammability, while the use of a cone calorimeter offers valuable insight into the fire behavior in forced flaming conditions, providing heat release rates, smoke and CO/CO2 production, amount of residue, and other important indices. Finally, the use of differential scanning calorimetry (DSC) provides information of material properties such as glass transition temperatures, and the implementation of blooming tests serves to examine the reduction of molecular mobility in the matrix.&#13;
&#13;
By varying the architecture of the flame retardants – in the O:N ratio of the chemical surrounding of phosphorus and in the aromatic composition of the monomers’ hydrocarbon moieties – and by comparing low versus high molecular weight species in varied epoxy resin matrices, as well as through the use of a multi-methodological approach, new insight into the use and the mode of action of these components as flame retardants for modern materials can be won.</abstract>
    <enrichment key="eventName">FRPM 2017, 16th European Meeting on Fire Retardant Polymeric Materials</enrichment>
    <enrichment key="eventPlace">Manchester, UK</enrichment>
    <enrichment key="eventStart">03.07.2017</enrichment>
    <enrichment key="eventEnd">06.07.2017</enrichment>
    <author>Alexander Battig</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Hyperbranched polymer</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Phosphoester</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Phosphor(di)amidate</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Phosphoramide</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Flame retardant</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Epoxy resin</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>54438</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>109875</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>198</volume>
    <type>article</type>
    <publisherName>Elsevier Ltd.</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Valorizing “non-vegan” bio-fillers: Synergists for phosphorus flame retardants in epoxy resins</title>
    <abstract language="eng">Sustainable, biogenic flame retardant adjuvants for epoxy resins are receiving increased focus. Zoological products like insects, bone meal, and eggshells are available in large quantities, but remain uninvestigated as functional fillers to epoxy resins, although they are potential synergists to flame retardants. The efficacy and flame retardancy of “non-vegan” additives in combination with flame retardants is investigated and the fire behavior and thermal decomposition of bio-sourced epoxy resin composites is characterized. By comparing the fire performance of composites containing flame retardants or fillers at varying loadings (5, 10, and 20%), their role as synergists that enhance the function of organophosphorus flame retardants in bio-epoxy composites is identified and quantified. Peak heat release rates were 44% lower in composites containing both filler and flame retardant versus those containing only flame retardants, and fire loads were reduced by 44% versus the pure resin, highlighting the ability of “non-vegan” fillers to function as synergists.</abstract>
    <parentTitle language="eng">Polymer Degradation and Stability</parentTitle>
    <identifier type="issn">0141-3910</identifier>
    <identifier type="doi">10.1016/j.polymdegradstab.2022.109875</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">28.03.2022</enrichment>
    <author>Alexander Battig</author>
    <author>Karla I. Garfias González</author>
    <author>Bernhard Schartel</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Flame retardancy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Synergy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bio-composite</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Epoxy resin</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Biogenic</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Renewable</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.5 Technische Eigenschaften von Polymerwerkstoffen</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="themenfelder" number="">Fire Science</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>50034</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Hyperbranched Polymeric Flame Retardants</title>
    <abstract language="eng">Most synthetic polymers have a high fire load, and as a result, they require flame retardants (FRs) to ensure their safe use. Phosphorus plays an important role in flame retardancy and has the potential to replace halogenated variants, which are assumed to be harmful to the environment and health. Among phosphorus-based FRs, there exists a trend towards polymeric, high molar mass molecules with complex molecular architectures. In this project, we synthesized a novel series of so-called phosphorus-based hyperbranched polymeric FRs and investigated their use as multifunctional additives to high-performance polymers, i.e. epoxy resins. By cleverly designing the chemical structure to contain varying amounts of P-O and P-N bonds, new insight into the chemical mechanism of flame retardancy was gained, and by comparing the hyperbranched polymers to their monomeric counterparts, a greater understanding of the role of complex architecture was won. This talk aims at presenting some of these results and proposes chemical mechanisms that illustrate what role these novel hyperbranched flame retardants play in molecular firefighting.</abstract>
    <enrichment key="eventName">AMI Fire Resistance in Plastics 2019</enrichment>
    <enrichment key="eventPlace">Cologne, Germany</enrichment>
    <enrichment key="eventStart">03.12.2019</enrichment>
    <enrichment key="eventEnd">05.12.2019</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Alexander Battig</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Epoxy resin</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Flame retardant</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Hyperbranched polymers</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Phosphoester</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Phosphoramidate</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Phosphoramide</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Phosphorodiamidate</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Pyrolysis</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>49456</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>108986</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>170</volume>
    <type>article</type>
    <publisherName>Elsevier Ltd.</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Matrix matters: Hyperbranched flame retardants in aliphatic and aromatic epoxy resins</title>
    <abstract language="eng">We synthesized a library of phosphorus-based flame retardants (phosphates and phosphoramides of low and high molar mass) and investigated their behavior in two epoxy resins (one aliphatic and one aromatic).&#13;
The pyrolytic and burning behavior of the two resins (via TGA, TG-FTIR, Hot stage FTIR, Py-GC/MS, PCFC, DSC, LOI, UL-94, Cone calorimeter) are analyzed and compared to the results of flame retardant (FR)-containing composites. A decomposition pathway incorporating the identified modes of action and known chemical mechanisms is proposed. The overlap of decomposition temperature (Tdec) ranges of matrix and FR determines the efficacy of the system. Low molar mass FRs strongly impact material properties like Tg but are very reactive, and high molar mass variants are more thermally stable. Varying PeO and PeN content of the FR affects decomposition, but the chemical structure of the matrix also guides FR behavior. Thus, phosphates afford lower fire load and heat release in aliphatic epoxy resins, and phosphoramides can act as additives in an aromatic matrix or a reactive FRs in aliphatic ones. The chemical structure and the structure-property relationship of both FR and matrix are central to FR performance and must be viewed not as two separate but as one codependent system.</abstract>
    <parentTitle language="eng">Polymer Degradation and Stability</parentTitle>
    <identifier type="issn">0141-3910</identifier>
    <identifier type="doi">10.1016/j.polymdegradstab.2019.108986</identifier>
    <enrichment key="date_peer_review">20.01.2020</enrichment>
    <author>Alexander Battig</author>
    <author>J. C. Markwart</author>
    <author>F. R. Wurm</author>
    <author>Bernhard Schartel</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Flame retardant</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Phosphate</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Phosphoramide</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Epoxy resin</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Hyperbranched polymer</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
</export-example>
