Preparation of polysiloxane oligomers bearing benzoxazine side groups and tunable properties of their thermosets
ABSTRACT A new pathway for the preparation of polysiloxane oligomers bearing benzoxazine side groups were reported via the hydrolysis and co‐polycondensation of benzoxazinyl siloxane (SBZ) with dimethyldiethoxysilane (DEDMS). The structures of SBZ and oligomers were characterized by Fourier transfor...
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| Veröffentlicht in: | Journal of applied polymer science 2014-11, Vol.131 (21), p.np-n/a |
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| creator | Zhu, Chunli Wei, Yanze Zhang, Jing Geng, Pengfei Lu, Zaijun |
| description | ABSTRACT
A new pathway for the preparation of polysiloxane oligomers bearing benzoxazine side groups were reported via the hydrolysis and co‐polycondensation of benzoxazinyl siloxane (SBZ) with dimethyldiethoxysilane (DEDMS). The structures of SBZ and oligomers were characterized by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) spectroscopy. The average molecular weights of the obtained oligomers were estimated from size exclusion chromatography and 1H‐NMR to be in the range of 2000–4000. The oligomers gave transparent films by casting in THF solution. The films were further thermally treated to produce crosslinked films via the ring opening polymerization of benzoxazine side group. The effects of siloxane content on polymerization behavior, glass transition temperature, and mechanical properties of the polybenzoxazine thermosets were investigated. Tensile test of the films revealed that the elongation at break increased with increasing siloxane content. The elongation at break of poly(I‐50) was up to 12.1%. Dynamic mechanical analysis of the thermosets showed that the Tgs were in the range of 119–165°C. Thermogravimetic analysis also revealed a better thermal stability as evidenced by the 5% weight loss temperatures in the range of 363–390°C. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40960. |
| doi_str_mv | 10.1002/app.40960 |
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A new pathway for the preparation of polysiloxane oligomers bearing benzoxazine side groups were reported via the hydrolysis and co‐polycondensation of benzoxazinyl siloxane (SBZ) with dimethyldiethoxysilane (DEDMS). The structures of SBZ and oligomers were characterized by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) spectroscopy. The average molecular weights of the obtained oligomers were estimated from size exclusion chromatography and 1H‐NMR to be in the range of 2000–4000. The oligomers gave transparent films by casting in THF solution. The films were further thermally treated to produce crosslinked films via the ring opening polymerization of benzoxazine side group. The effects of siloxane content on polymerization behavior, glass transition temperature, and mechanical properties of the polybenzoxazine thermosets were investigated. Tensile test of the films revealed that the elongation at break increased with increasing siloxane content. The elongation at break of poly(I‐50) was up to 12.1%. Dynamic mechanical analysis of the thermosets showed that the Tgs were in the range of 119–165°C. Thermogravimetic analysis also revealed a better thermal stability as evidenced by the 5% weight loss temperatures in the range of 363–390°C. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40960.</description><identifier>ISSN: 0021-8995</identifier><identifier>EISSN: 1097-4628</identifier><identifier>DOI: 10.1002/app.40960</identifier><identifier>CODEN: JAPNAB</identifier><language>eng</language><publisher>Hoboken, NJ: Blackwell Publishing Ltd</publisher><subject>Applied sciences ; Benzoxazines ; Breaking ; Elongation ; Exact sciences and technology ; Fourier transforms ; Inorganic and organomineral polymers ; Materials science ; mechanical properties ; Oligomers ; Physicochemistry of polymers ; polycondensation ; Polymers ; Polysiloxanes ; Preparation ; properties and characterization ; Siloxanes ; thermal properties ; Thermosetting resins</subject><ispartof>Journal of applied polymer science, 2014-11, Vol.131 (21), p.np-n/a</ispartof><rights>Copyright © 2014 Wiley Periodicals, Inc.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4680-fc4dfe6c86430c948b36c60f90f52ad9835185c78113c7362ab4cd6c3c65b0273</citedby><cites>FETCH-LOGICAL-c4680-fc4dfe6c86430c948b36c60f90f52ad9835185c78113c7362ab4cd6c3c65b0273</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fapp.40960$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fapp.40960$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28710442$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhu, Chunli</creatorcontrib><creatorcontrib>Wei, Yanze</creatorcontrib><creatorcontrib>Zhang, Jing</creatorcontrib><creatorcontrib>Geng, Pengfei</creatorcontrib><creatorcontrib>Lu, Zaijun</creatorcontrib><title>Preparation of polysiloxane oligomers bearing benzoxazine side groups and tunable properties of their thermosets</title><title>Journal of applied polymer science</title><addtitle>J. Appl. Polym. Sci</addtitle><description>ABSTRACT
A new pathway for the preparation of polysiloxane oligomers bearing benzoxazine side groups were reported via the hydrolysis and co‐polycondensation of benzoxazinyl siloxane (SBZ) with dimethyldiethoxysilane (DEDMS). The structures of SBZ and oligomers were characterized by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) spectroscopy. The average molecular weights of the obtained oligomers were estimated from size exclusion chromatography and 1H‐NMR to be in the range of 2000–4000. The oligomers gave transparent films by casting in THF solution. The films were further thermally treated to produce crosslinked films via the ring opening polymerization of benzoxazine side group. The effects of siloxane content on polymerization behavior, glass transition temperature, and mechanical properties of the polybenzoxazine thermosets were investigated. Tensile test of the films revealed that the elongation at break increased with increasing siloxane content. The elongation at break of poly(I‐50) was up to 12.1%. Dynamic mechanical analysis of the thermosets showed that the Tgs were in the range of 119–165°C. Thermogravimetic analysis also revealed a better thermal stability as evidenced by the 5% weight loss temperatures in the range of 363–390°C. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40960.</description><subject>Applied sciences</subject><subject>Benzoxazines</subject><subject>Breaking</subject><subject>Elongation</subject><subject>Exact sciences and technology</subject><subject>Fourier transforms</subject><subject>Inorganic and organomineral polymers</subject><subject>Materials science</subject><subject>mechanical properties</subject><subject>Oligomers</subject><subject>Physicochemistry of polymers</subject><subject>polycondensation</subject><subject>Polymers</subject><subject>Polysiloxanes</subject><subject>Preparation</subject><subject>properties and characterization</subject><subject>Siloxanes</subject><subject>thermal properties</subject><subject>Thermosetting resins</subject><issn>0021-8995</issn><issn>1097-4628</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNp1kM1u1DAURi0EEkNhwRtEQkiwSOt_O8sygimihUFqxdJyHGdwycSubyI6fXo8TOkCqRvfxT3f0fWH0GuCjwnG9MSmdMxxI_ETtCC4UTWXVD9Fi7IjtW4a8Ry9ALjGmBCB5QKldfbJZjuFOFaxr1IcdhCGeGtHX8UhbOLWZ6hab3MYN2WOd2V3F8oWQuerTY5zgsqOXTXNo20HX6Uck89T8LAXTj99yPs3byP4CV6iZ70dwL-6n0fo6tPHy-VZff5t9Xl5el47LjWue8e73kunJWfYNVy3TDqJ-wb3gtqu0UwQLZzShDCnmKS25a6TjjkpWkwVO0LvDt5yzs3sYTLbAM4PQ_lYnMEQIRWhkmhd0Df_oddxzmO5rlCCMsmEooV6f6BcjgDZ9yblsLV5Zwg2--5N6d787b6wb--NFpwd-mxHF-AhQLUimPO98-TA_Q6D3z0uNKfr9T9zfUgEmPztQ8LmX0YqpoT58XVlVt8viPrwZWnO2B9YiKMB</recordid><startdate>20141105</startdate><enddate>20141105</enddate><creator>Zhu, Chunli</creator><creator>Wei, Yanze</creator><creator>Zhang, Jing</creator><creator>Geng, Pengfei</creator><creator>Lu, Zaijun</creator><general>Blackwell Publishing Ltd</general><general>Wiley</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20141105</creationdate><title>Preparation of polysiloxane oligomers bearing benzoxazine side groups and tunable properties of their thermosets</title><author>Zhu, Chunli ; Wei, Yanze ; Zhang, Jing ; Geng, Pengfei ; Lu, Zaijun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4680-fc4dfe6c86430c948b36c60f90f52ad9835185c78113c7362ab4cd6c3c65b0273</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Applied sciences</topic><topic>Benzoxazines</topic><topic>Breaking</topic><topic>Elongation</topic><topic>Exact sciences and technology</topic><topic>Fourier transforms</topic><topic>Inorganic and organomineral polymers</topic><topic>Materials science</topic><topic>mechanical properties</topic><topic>Oligomers</topic><topic>Physicochemistry of polymers</topic><topic>polycondensation</topic><topic>Polymers</topic><topic>Polysiloxanes</topic><topic>Preparation</topic><topic>properties and characterization</topic><topic>Siloxanes</topic><topic>thermal properties</topic><topic>Thermosetting resins</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhu, Chunli</creatorcontrib><creatorcontrib>Wei, Yanze</creatorcontrib><creatorcontrib>Zhang, Jing</creatorcontrib><creatorcontrib>Geng, Pengfei</creatorcontrib><creatorcontrib>Lu, Zaijun</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of applied polymer science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhu, Chunli</au><au>Wei, Yanze</au><au>Zhang, Jing</au><au>Geng, Pengfei</au><au>Lu, Zaijun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Preparation of polysiloxane oligomers bearing benzoxazine side groups and tunable properties of their thermosets</atitle><jtitle>Journal of applied polymer science</jtitle><addtitle>J. Appl. Polym. Sci</addtitle><date>2014-11-05</date><risdate>2014</risdate><volume>131</volume><issue>21</issue><spage>np</spage><epage>n/a</epage><pages>np-n/a</pages><issn>0021-8995</issn><eissn>1097-4628</eissn><coden>JAPNAB</coden><abstract>ABSTRACT
A new pathway for the preparation of polysiloxane oligomers bearing benzoxazine side groups were reported via the hydrolysis and co‐polycondensation of benzoxazinyl siloxane (SBZ) with dimethyldiethoxysilane (DEDMS). The structures of SBZ and oligomers were characterized by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) spectroscopy. The average molecular weights of the obtained oligomers were estimated from size exclusion chromatography and 1H‐NMR to be in the range of 2000–4000. The oligomers gave transparent films by casting in THF solution. The films were further thermally treated to produce crosslinked films via the ring opening polymerization of benzoxazine side group. The effects of siloxane content on polymerization behavior, glass transition temperature, and mechanical properties of the polybenzoxazine thermosets were investigated. Tensile test of the films revealed that the elongation at break increased with increasing siloxane content. The elongation at break of poly(I‐50) was up to 12.1%. Dynamic mechanical analysis of the thermosets showed that the Tgs were in the range of 119–165°C. Thermogravimetic analysis also revealed a better thermal stability as evidenced by the 5% weight loss temperatures in the range of 363–390°C. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40960.</abstract><cop>Hoboken, NJ</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/app.40960</doi><tpages>8</tpages></addata></record> |
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| subjects | Applied sciences Benzoxazines Breaking Elongation Exact sciences and technology Fourier transforms Inorganic and organomineral polymers Materials science mechanical properties Oligomers Physicochemistry of polymers polycondensation Polymers Polysiloxanes Preparation properties and characterization Siloxanes thermal properties Thermosetting resins |
| title | Preparation of polysiloxane oligomers bearing benzoxazine side groups and tunable properties of their thermosets |
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