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Polyamide/silica hybrid materials by anionic melt polymerization of lactam-substituted silane monomers with ε-caprolactam
European Polymer Journal ( IF 5.8 ) Pub Date : 2019-04-01 , DOI: 10.1016/j.eurpolymj.2019.01.072
Kevin Nagel , Stefan Spange

Abstract Polyamide 6/silica hybrid materials are fabricated by the activated anionic polymerization of e-caprolactam (e-CL) with lactam-substituted silane monomers Si(e-CL)4, Me2Si(e-CL)2 and Me3Si(e-CL), respectively. All three silane monomers are excellent activators for the anionic e-caprolactam polymerization initiated by EtMgBr, resulting in short reaction times of a view minutes and high polymer yields. Studies on the thermal decomposition behavior of the lactam containing silanes indicate the formation of N-iminolactams, which influence the activation process as well as the pathway of the inorganic filler formation. The molecular structure and morphology of the hybrid materials have been investigated by solution and solid-state NMR and FTIR spectroscopies as well as electron microscopy and size exclusion chromatography measurements. As consequence, lactam-substituted silane monomers serve both as activator and reactant in the synthesis of PA/silica and related hybrid materials.

中文翻译:

通过内酰胺取代的硅烷单体与ε-己内酰胺的阴离子熔融聚合制备聚酰胺/二氧化硅杂化材料

摘要 聚酰胺 6/二氧化硅杂化材料是通过ε-己内酰胺 (e-CL) 与内酰胺取代的硅烷单体 Si(e-CL)4、Me2Si(e-CL)2 和 Me3Si(e-CL) 的活化阴离子聚合制备的。 ), 分别。所有三种硅烷单体都是由 EtMgBr 引发的阴离子ε-己内酰胺聚合的优异活化剂,导致反应时间短,聚合物产率高。对含硅烷的内酰胺的热分解行为的研究表明,N-亚氨基内酰胺的形成会影响活化过程以及无机填料形成的途径。杂化材料的分子结构和形态已通过溶液和固态 NMR 和 FTIR 光谱以及电子显微镜和尺寸排阻色谱测量进行了研究。
更新日期:2019-04-01
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