<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>51196</id>
    <completedYear/>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>7410</pageFirst>
    <pageLast>7419</pageLast>
    <pageNumber/>
    <edition/>
    <issue>17</issue>
    <volume>53</volume>
    <type>article</type>
    <publisherName>ACS</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Molecular Dynamics of Janus Polynorbornenes: Glass Transitions and Nanophase Separation</title>
    <abstract language="eng">For the first time, dielectric and calorimetric investigations of an homologous series of Janus polynorbornenes with rigid main backbones and flexible -Si(OR)3 side groups, of differing length alkyl chains (R = Propyl, Butyl, Hexyl, Octyl, Decyl) is reported. Generally, this class of polymers has some potential for applications in the field of gas separation membranes. Two dielectrically active processes are observed at low temperatures, denoted as β- and α- relaxation. The former can be assigned to localized fluctuations, whilst the latter is related to the glassy dynamics of the flexible -Si(OR)3 side groups, creating a nanophase separation in both the alkyl chain rich and backbone rich domains. This is confirmed through temperature modulated DSC measurements and X-ray scattering experiments. The glass transition temperatures of the backbone rich domains, which are beyond or near to their degradation temperatures in terms of conventional DSC, are determined for the first time using Fast Scanning Calorimetry employing both fast heating and cooling rates. This is complimented with scattering experiments that show how the size of the alkyl chain rich domains increases with chain length. Alongside these results, a significant conductivity contribution was observed for all poly(tricyclononenes) with -Si(OR)3 side groups, which is interpreted in terms of a percolation model.</abstract>
    <parentTitle language="eng">Macromolecules</parentTitle>
    <identifier type="doi">10.1021/acs.macromol.0c01450</identifier>
    <enrichment key="Audience">12.10.2020</enrichment>
    <enrichment key="date_peer_review">12.10.2020</enrichment>
    <author>Mohamed Aejaz Kolmangadi</author>
    <author>Paulina Szymoniak</author>
    <author>Glen Jacob Smales</author>
    <author>D. Alentiev</author>
    <author>M. Bermeshev</author>
    <author>Martin Böhning</author>
    <author>Andreas Schönhals</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Polynorbornenes</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Broadband Dielectric Spectrscopy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Advanced calorimetry</value>
    </subject>
    <collection role="ddc" number="543">Analytische Chemie</collection>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">6 Materialchemie</collection>
    <collection role="institutes" number="">6.5 Synthese und Streuverfahren nanostrukturierter Materialien</collection>
    <collection role="institutes" number="">6.6 Digitale Materialchemie</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.5 Technische Eigenschaften von Polymerwerkstoffen</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Chemie und Prozesstechnik</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
</export-example>
