Transparent polyvinylsilsesquioxane aerogels: investigations on synthetic parameters and surface modification
Systematic investigations on the effect of synthetic conditions onto the properties of polyvinylsilsesquioxane (CH 2 =CHSiO 3/2 ) aerogels have been conducted. As previously reported, transparent polyvinylsilsesquioxane aerogels can be obtained by utilizing a liquid surfactant as a solvent and a two...
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| Veröffentlicht in: | Journal of sol-gel science and technology 2017-04, Vol.82 (1), p.2-14 |
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| creator | Shimizu, Taiyo Kanamori, Kazuyoshi Nakanishi, Kazuki |
| description | Systematic investigations on the effect of synthetic conditions onto the properties of polyvinylsilsesquioxane (CH
2
=CHSiO
3/2
) aerogels have been conducted. As previously reported, transparent polyvinylsilsesquioxane aerogels can be obtained by utilizing a liquid surfactant as a solvent and a two-step sol–gel reaction involving hydrolysis catalyzed by a strong acid and subsequent polycondensation by a strong base. In this study, effects of base catalyst, gelation and aging conditions, amount of surfactant and concentration of acid catalyst have been investigated. With the optimized synthetic condition, the value of light transmittance reaches as high as 70% (at the wavelength of 550 nm for a 10-mm thick sample). Applicability of addition reactions utilizing thiol-ene reactions and hydrosilylation has also been surveyed. Thiol-ene reactions are relatively effective and can modify surface hydrophobicity and mechanical properties of polyvinylsilsesquioxane aerogels. In the case of hydrosilylation, a partial addition of a hydrosilane compound onto the polyvinylsilsesquioxane gel surface can be observed. Addition reactions, in particular thiol-ene reactions, are found to be profitable for implementing chemical functionality on the transparent aerogels.
Graphical Abstract |
| doi_str_mv | 10.1007/s10971-017-4339-6 |
| format | Article |
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2
=CHSiO
3/2
) aerogels have been conducted. As previously reported, transparent polyvinylsilsesquioxane aerogels can be obtained by utilizing a liquid surfactant as a solvent and a two-step sol–gel reaction involving hydrolysis catalyzed by a strong acid and subsequent polycondensation by a strong base. In this study, effects of base catalyst, gelation and aging conditions, amount of surfactant and concentration of acid catalyst have been investigated. With the optimized synthetic condition, the value of light transmittance reaches as high as 70% (at the wavelength of 550 nm for a 10-mm thick sample). Applicability of addition reactions utilizing thiol-ene reactions and hydrosilylation has also been surveyed. Thiol-ene reactions are relatively effective and can modify surface hydrophobicity and mechanical properties of polyvinylsilsesquioxane aerogels. In the case of hydrosilylation, a partial addition of a hydrosilane compound onto the polyvinylsilsesquioxane gel surface can be observed. Addition reactions, in particular thiol-ene reactions, are found to be profitable for implementing chemical functionality on the transparent aerogels.
Graphical Abstract</description><identifier>ISSN: 0928-0707</identifier><identifier>EISSN: 1573-4846</identifier><identifier>DOI: 10.1007/s10971-017-4339-6</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Aerogels ; Catalysis ; Catalysts ; Ceramics ; Chemical reactions ; Chemistry and Materials Science ; Composites ; cryogels ; etc. ; Gelation ; Glass ; Hydrolysis ; Hydrophobicity ; Hydrosilylation ; Inorganic Chemistry ; Invited Paper: Nano- and macroporous materials (aerogels ; Light transmittance ; Materials Science ; Mechanical properties ; Nanotechnology ; Natural Materials ; Optical and Electronic Materials ; Organic chemistry ; Parameter modification ; Sol-gel processes ; Surfactants ; xerogels</subject><ispartof>Journal of sol-gel science and technology, 2017-04, Vol.82 (1), p.2-14</ispartof><rights>Springer Science+Business Media New York 2017</rights><rights>Copyright Springer Science & Business Media 2017</rights><rights>Journal of Sol-Gel Science and Technology is a copyright of Springer, (2017). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c381t-efe7c9795cabcb429c7fbf2ed029d223a822844263627e0893b005956c8643623</citedby><cites>FETCH-LOGICAL-c381t-efe7c9795cabcb429c7fbf2ed029d223a822844263627e0893b005956c8643623</cites><orcidid>0000-0001-5087-9808</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10971-017-4339-6$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10971-017-4339-6$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Shimizu, Taiyo</creatorcontrib><creatorcontrib>Kanamori, Kazuyoshi</creatorcontrib><creatorcontrib>Nakanishi, Kazuki</creatorcontrib><title>Transparent polyvinylsilsesquioxane aerogels: investigations on synthetic parameters and surface modification</title><title>Journal of sol-gel science and technology</title><addtitle>J Sol-Gel Sci Technol</addtitle><description>Systematic investigations on the effect of synthetic conditions onto the properties of polyvinylsilsesquioxane (CH
2
=CHSiO
3/2
) aerogels have been conducted. As previously reported, transparent polyvinylsilsesquioxane aerogels can be obtained by utilizing a liquid surfactant as a solvent and a two-step sol–gel reaction involving hydrolysis catalyzed by a strong acid and subsequent polycondensation by a strong base. In this study, effects of base catalyst, gelation and aging conditions, amount of surfactant and concentration of acid catalyst have been investigated. With the optimized synthetic condition, the value of light transmittance reaches as high as 70% (at the wavelength of 550 nm for a 10-mm thick sample). Applicability of addition reactions utilizing thiol-ene reactions and hydrosilylation has also been surveyed. Thiol-ene reactions are relatively effective and can modify surface hydrophobicity and mechanical properties of polyvinylsilsesquioxane aerogels. In the case of hydrosilylation, a partial addition of a hydrosilane compound onto the polyvinylsilsesquioxane gel surface can be observed. Addition reactions, in particular thiol-ene reactions, are found to be profitable for implementing chemical functionality on the transparent aerogels.
Graphical Abstract</description><subject>Aerogels</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Ceramics</subject><subject>Chemical reactions</subject><subject>Chemistry and Materials Science</subject><subject>Composites</subject><subject>cryogels</subject><subject>etc.</subject><subject>Gelation</subject><subject>Glass</subject><subject>Hydrolysis</subject><subject>Hydrophobicity</subject><subject>Hydrosilylation</subject><subject>Inorganic Chemistry</subject><subject>Invited Paper: Nano- and macroporous materials (aerogels</subject><subject>Light transmittance</subject><subject>Materials Science</subject><subject>Mechanical properties</subject><subject>Nanotechnology</subject><subject>Natural Materials</subject><subject>Optical and Electronic Materials</subject><subject>Organic chemistry</subject><subject>Parameter modification</subject><subject>Sol-gel processes</subject><subject>Surfactants</subject><subject>xerogels</subject><issn>0928-0707</issn><issn>1573-4846</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp9kE1PAyEURYnRxFr9Ae5IXKN8zQDuTONX0sRNXROGYSpNCy3MNM6_l1oXbnRF8nLuebwLwDXBtwRjcZcJVoIgTATijClUn4AJqQRDXPL6FEywohJhgcU5uMh5hTGuOBETsFkkE_LWJBd6uI3rce_DuM5-nV3eDT5-muCgcSku3TrfQx_2Lvd-aXofQ4YxwDyG_sP13sIiMRvXu5ShCS3MQ-qMdXATW995-524BGedKeqrn3cK3p8eF7MXNH97fp09zJFlkvTIdU5YJVRlTWMbTpUVXdNR12KqWkqZkZRKzmnNaiocloo15R5V1VbWvMzYFNwcvdsUd0P5sV7FIYWyUlNaKV5RIfF_FJESi0oKVheKHCmbYs7JdXqb_MakUROsD93rY_e6dK8P3etDhh4zubBh6dIv85-hLz1ZiMU</recordid><startdate>20170401</startdate><enddate>20170401</enddate><creator>Shimizu, Taiyo</creator><creator>Kanamori, Kazuyoshi</creator><creator>Nakanishi, Kazuki</creator><general>Springer US</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>L6V</scope><scope>M7S</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><orcidid>https://orcid.org/0000-0001-5087-9808</orcidid></search><sort><creationdate>20170401</creationdate><title>Transparent polyvinylsilsesquioxane aerogels: investigations on synthetic parameters and surface modification</title><author>Shimizu, Taiyo ; Kanamori, Kazuyoshi ; Nakanishi, Kazuki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c381t-efe7c9795cabcb429c7fbf2ed029d223a822844263627e0893b005956c8643623</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Aerogels</topic><topic>Catalysis</topic><topic>Catalysts</topic><topic>Ceramics</topic><topic>Chemical reactions</topic><topic>Chemistry and Materials Science</topic><topic>Composites</topic><topic>cryogels</topic><topic>etc.</topic><topic>Gelation</topic><topic>Glass</topic><topic>Hydrolysis</topic><topic>Hydrophobicity</topic><topic>Hydrosilylation</topic><topic>Inorganic Chemistry</topic><topic>Invited Paper: Nano- and macroporous materials (aerogels</topic><topic>Light transmittance</topic><topic>Materials Science</topic><topic>Mechanical properties</topic><topic>Nanotechnology</topic><topic>Natural Materials</topic><topic>Optical and Electronic Materials</topic><topic>Organic chemistry</topic><topic>Parameter modification</topic><topic>Sol-gel processes</topic><topic>Surfactants</topic><topic>xerogels</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shimizu, Taiyo</creatorcontrib><creatorcontrib>Kanamori, Kazuyoshi</creatorcontrib><creatorcontrib>Nakanishi, Kazuki</creatorcontrib><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><jtitle>Journal of sol-gel science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shimizu, Taiyo</au><au>Kanamori, Kazuyoshi</au><au>Nakanishi, Kazuki</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Transparent polyvinylsilsesquioxane aerogels: investigations on synthetic parameters and surface modification</atitle><jtitle>Journal of sol-gel science and technology</jtitle><stitle>J Sol-Gel Sci Technol</stitle><date>2017-04-01</date><risdate>2017</risdate><volume>82</volume><issue>1</issue><spage>2</spage><epage>14</epage><pages>2-14</pages><issn>0928-0707</issn><eissn>1573-4846</eissn><abstract>Systematic investigations on the effect of synthetic conditions onto the properties of polyvinylsilsesquioxane (CH
2
=CHSiO
3/2
) aerogels have been conducted. As previously reported, transparent polyvinylsilsesquioxane aerogels can be obtained by utilizing a liquid surfactant as a solvent and a two-step sol–gel reaction involving hydrolysis catalyzed by a strong acid and subsequent polycondensation by a strong base. In this study, effects of base catalyst, gelation and aging conditions, amount of surfactant and concentration of acid catalyst have been investigated. With the optimized synthetic condition, the value of light transmittance reaches as high as 70% (at the wavelength of 550 nm for a 10-mm thick sample). Applicability of addition reactions utilizing thiol-ene reactions and hydrosilylation has also been surveyed. Thiol-ene reactions are relatively effective and can modify surface hydrophobicity and mechanical properties of polyvinylsilsesquioxane aerogels. In the case of hydrosilylation, a partial addition of a hydrosilane compound onto the polyvinylsilsesquioxane gel surface can be observed. Addition reactions, in particular thiol-ene reactions, are found to be profitable for implementing chemical functionality on the transparent aerogels.
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| subjects | Aerogels Catalysis Catalysts Ceramics Chemical reactions Chemistry and Materials Science Composites cryogels etc. Gelation Glass Hydrolysis Hydrophobicity Hydrosilylation Inorganic Chemistry Invited Paper: Nano- and macroporous materials (aerogels Light transmittance Materials Science Mechanical properties Nanotechnology Natural Materials Optical and Electronic Materials Organic chemistry Parameter modification Sol-gel processes Surfactants xerogels |
| title | Transparent polyvinylsilsesquioxane aerogels: investigations on synthetic parameters and surface modification |
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