{"id":2070,"date":"2018-02-07T15:23:17","date_gmt":"2018-02-07T12:23:17","guid":{"rendered":"http:\/\/polymerjournal.kiev.ua\/en\/?page_id=2070"},"modified":"2018-02-07T15:24:24","modified_gmt":"2018-02-07T12:24:24","slug":"2014-4-2","status":"publish","type":"page","link":"http:\/\/polymerjournal.kiev.ua\/en\/2014-4-2\/","title":{"rendered":"2014 (4) 2"},"content":{"rendered":"

Effect of epoxyfunctionalized POSS on chemical structure and viscoelastic properties of polycyanurate based nanocomposites<\/strong><\/p>\n

\u00a0<\/strong><\/p>\n

\u041e<\/em><\/strong>.P. Grigoryeva<\/em><\/strong>1<\/em><\/strong>, <\/em><\/strong>\u041e<\/em><\/strong>.N. Starostenko<\/em><\/strong>1<\/em><\/strong>, K.G. Gusakova<\/em><\/strong>1<\/em><\/strong>, <\/em><\/strong>\u0410<\/em><\/strong>.<\/em><\/strong>\u041c<\/em><\/strong>. Fainleib<\/em><\/strong>1<\/em><\/strong>, J.M. Saiter<\/em><\/strong>2<\/em><\/strong>, B.\u00a0Youssef\u00a0<\/em><\/strong>2,3<\/em><\/strong>, D. Grande<\/em><\/strong>4<\/em><\/strong>\u00a0<\/em><\/strong><\/p>\n

 <\/p>\n

1Institute of Macromolecular Chemistry NAS of Ukraine<\/p>\n

48, Kharkivske shose, 02160 Kyiv, Ukraine<\/p>\n

2AMME-LECAP International Lab EA 4528 Universite de Rouen<\/p>\n

76801 St. Et. du Rouvray, France<\/p>\n

3 INSA de Rouen, BP 08 Av. de l\u2019Universite<\/p>\n

76801, Saint Etienne du Rouvray, France<\/p>\n

4 Institut de Chimie et des Materiaux Paris-Est, UMR 7182 CNRS \u2013 Universite Paris Est Val-de-Marne<\/p>\n

94320, 2-8, rue Henri Dunant, Thiais, France<\/p>\n

 <\/p>\n

Polym. J., 2014, 36<\/strong>, no. 4: 341-351.<\/p>\n

 <\/p>\n

Section: Structure and properties.<\/p>\n

 <\/p>\n

Language: Russian.<\/p>\n

 <\/p>\n

Abstract:<\/p>\n

Organic-inorganic nanocomposites based on thermostable polycyanurate networks (PCNs) and epoxy functionalized polyhedral oligomeric silsesquioxanes (POSS) with different content of epoxy groups <\/em>were synthesized by the in situ reactive forming and characterized. The chemistry and kinetics of the DCBE\/epoxy POSS blends curing process was monitored using FTIR spectroscopy technique. It was found that the polycyclotrimerization of the DCBE leading to PCN formation took place along with a co-reaction between cyanate groups of DCBE and epoxy groups of ECH-POSS resulting to oxazolidinone cycle formation. Catalytic effect of epoxy-POSS on polycyclotrimerization reaction of DCBE has been found. It has been established that velocity of cyanurate cycles formation as well as final cyanate groups conversion depend on content of reactive groups in epoxy-POSS. <\/em>Influence of the nanofiller content and type on viscoelastic properties and microphase structure of the nanocomposites prepared has been studied using dynamical mechanical thermal analysis (DMTA). <\/em>It is shown that loading 2-10 wt.% of<\/em> epoxy-POSS into PCN leads to formation of hybrid fragments in PC\/epoxy-POSS network inducing some disordering of PC-matrix network structure and enhancing chain segments mobility. Therewith, the values of glass transition apparent activation energy and glass transition temperatures have been decreased.\u00a0 A significant increase of elastic modulus value for nanocomposites containing 2 and 5 wt.% of epoxy-POSS has been fixed. <\/em><\/p>\n

 <\/p>\n

Keywords: <\/strong>in situ<\/em> reactive forming, polymer nanocomposites, epoxy-functionalized POSS, viscoelastic properties, activation energy.<\/p>\n

 <\/p>\n

\u041b\u0438\u0442\u0435\u0440\u0430\u0442\u0443\u0440\u0430<\/strong><\/p>\n

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Effect of epoxyfunctionalized POSS on chemical structure and viscoelastic properties of polycyanurate based nanocomposites \u00a0 \u041e.P. Grigoryeva1, \u041e.N. Starostenko1, K.G. Gusakova1, \u0410.\u041c. Fainleib1, J.M. Saiter2, B.\u00a0Youssef\u00a02,3, D. Grande4\u00a0   1Institute of Macromolecular Chemistry NAS of Ukraine 48, Kharkivske shose, 02160 Kyiv, Ukraine 2AMME-LECAP International Lab EA 4528 Universite de Rouen 76801 St. Et. du Rouvray, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"acf":[],"_links":{"self":[{"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/pages\/2070"}],"collection":[{"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/comments?post=2070"}],"version-history":[{"count":2,"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/pages\/2070\/revisions"}],"predecessor-version":[{"id":2072,"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/pages\/2070\/revisions\/2072"}],"wp:attachment":[{"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/media?parent=2070"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}