<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>11260</id>
    <completedYear/>
    <publishedYear>1994</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>105</pageFirst>
    <pageLast>113</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>683</volume>
    <type>article</type>
    <publisherName>Elsevier</publisherName>
    <publisherPlace>Amsterdam</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Supercritical fluid chromatography-mass spectrometry and matrix-assisted laser-desorption ionisation mass spectrometry of cyclic siloxanes in technical silicone oils and silicone rubbers</title>
    <abstract language="eng">Supercritical fluid chromatography in combination with mass spectrometry is used for determining cyclic siloxanes beside linear methyl and hydroxyl ''end-capped'' siloxanes. Electron impact ionisation and chemical ionisation techniques are utilized for identifying cyclic siloxanes in technical silicone oils and silicone rubber. Ammonia as reagent gas is preferred in the higher-molecular-mass range. Matrix-assisted laser-desorption ionisation mass spectrometry can be useful as a supplementary method for characterizing smaller amounts of both cyclic and linear siloxanes as well as silanols in the higher-molecular-mass range.</abstract>
    <parentTitle language="eng">Journal of chromatography A</parentTitle>
    <identifier type="old">12903</identifier>
    <identifier type="doi">10.1016/0021-9673(94)00342-4</identifier>
    <identifier type="issn">0021-9673</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">21.11.2005</enrichment>
    <author>Ulrich Just</author>
    <author>F. Mellor</author>
    <author>Frank Keidel</author>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>1422</id>
    <completedYear/>
    <publishedYear>1995</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>89</pageFirst>
    <pageLast>99</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>693</volume>
    <type>article</type>
    <publisherName>Elsevier</publisherName>
    <publisherPlace>Amsterdam</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Analysis of a mixture of linear and cyclic siloxanes by cryo-gas chromatography-Fourier transform infrared spectroscopy and gas chromatography-mass spectrometry</title>
    <abstract language="eng">A mixture of linear and cyclic methylsiloxanes was analysed to characterize the different types of siloxane structures using gas chromatography (GC), mass spectrometry (MS) and Fourier transform infrared (FT-IR) spectroscopy. Siloxane structures are formed by hydrolysis of dimethyldichlorosilane under controlled conditions in technical applications. In the presence of methyltrichlorosilane or even trimethylchlorosilane, linear polydimethylsiloxanes and mono-, bi- or polycyclic methylsiloxanes are synthesized depending on the reaction conditions. The main structural units are (CH3)3SiO1, (CH3)2SiO and (CH3)SiO3. GC-MS may provide molecular mass information, but it is not able to identify isomeric structures, which are also formed in lower quantities by the mentioned reactions. Coupling GC with FT-IR enables the determination of group frequencies to assign specific structures. Thus, combination of GC with MS and FT-IR may be used in elucidating complex cyclosiloxane compounds. FT-IR measurements were performed with a Tracer unit.</abstract>
    <parentTitle language="eng">Journal of chromatography A</parentTitle>
    <identifier type="old">1224</identifier>
    <identifier type="doi">10.1016/0021-9673(94)01115-U</identifier>
    <identifier type="issn">0021-9673</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">15.07.2002</enrichment>
    <author>Frank Keidel</author>
    <author>Sigrid Wachholz</author>
    <author>Ulrich Just</author>
    <author>H. Geissler</author>
    <author>K. Käppler</author>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>1423</id>
    <completedYear/>
    <publishedYear>1995</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>29</pageFirst>
    <pageLast>36</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>505</volume>
    <type>article</type>
    <publisherName>Elsevier</publisherName>
    <publisherPlace>Amsterdam</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">On the synthesis of siloxanes. XXIII. Synthesis and spectroscopic characterization of 2-functional 1,3-dioxa-2,4,7-trisilacycloheptanes</title>
    <abstract language="eng">A series of 2-functional 1,3-dioxa-2,4,7-trisilacycloheptanes was synthesized and characterized by means of 29Si NMR spectroscopy, gas chromatography, high performance liquid chromatography and gas chromatography-mass spectrometry. The signals were assigned to the various configurational isomers. This assignment was confirmed by independent synthesis of individual isomers. The sequence of the NMR signals of the all-cis and trans-trans isomers required for the determination of stereochemistry was found to be the same as that of the respective cyclotrisiloxanes.</abstract>
    <parentTitle language="eng">Journal of organometallic chemistry</parentTitle>
    <identifier type="old">1225</identifier>
    <identifier type="doi">10.1016/0022-328X(95)05586-0</identifier>
    <identifier type="issn">0022-328X</identifier>
    <identifier type="issn">1872-8561</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">15.07.2002</enrichment>
    <author>Frank Keidel</author>
    <author>K. Rühlmann</author>
    <author>S. Jähnichen</author>
    <author>D. Scheller</author>
    <author>U. Scheim</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cylosiloxanes</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Synthesis</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Spectroscopic characterization</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>1426</id>
    <completedYear/>
    <publishedYear>1998</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>416</pageFirst>
    <pageLast>421</pageLast>
    <pageNumber/>
    <edition/>
    <issue>6</issue>
    <volume>51</volume>
    <type>article</type>
    <publisherName>Hüthig</publisherName>
    <publisherPlace>Heidelberg</publisherPlace>
    <creatingCorporation>Deutsche Kautschuk-Gesellschaft</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Isothiocyanatbildung bei der Schwefelvulkanisation mit Beschleunigern - Teil 2: Guanidinbeschleuniger</title>
    <parentTitle language="deu">Kautschuk, Gummi, Kunststoffe (KGK)</parentTitle>
    <identifier type="old">1228</identifier>
    <identifier type="issn">0948-3276</identifier>
    <identifier type="issn">0022-9520</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">15.07.2002</enrichment>
    <author>Frank Keidel</author>
    <author>Hans-Jürgen Kretzschmar</author>
    <author>Horst Weigel</author>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
</export-example>
