Polyamide/silica hybrid materials by anionic melt polymerization of lactam-substituted silane monomers with ε-caprolactam

Polyamide/silica hybrid materials by anionic melt polymerization of lactam-substituted silane monomers with ε-caprolactam
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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

DOI:
10.1016/j.eurpolymj.2019.01.072
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发表时间:
2019
影响因子:
6
通讯作者:
S. Spange
S. Spange
中科院分区:
化学2区
文献类型:
--
作者:
K. Nagel;S. Spange

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通过ε-己内酰胺(ε-CL)分别与内酰胺取代的硅烷单体Si(ε-CL)4、Me 2Si(ε-CL)2和Me 3Si(ε-CL)进行活化阴离子聚合制备了聚酰胺6/二氧化硅杂化材料。这三种硅烷单体都是EtMgBr引发己内酰胺阴离子聚合的优良活化剂,反应时间短,聚合物产率高。对含内酰胺硅烷的热分解行为的研究表明,N-亚氨基内酰胺的形成影响了活化过程以及无机填料的形成途径。的分子结构和形态的混合材料已被调查的溶液和固态NMR和FTIR光谱,以及电子显微镜和尺寸排阻色谱测量。因此,内酰胺取代的硅烷单体在PA/二氧化硅和相关杂化材料的合成中充当活化剂和反应物。
Polyamide 6/silica hybrid materials are fabricated by the activated anionic polymerization ofε-caprolactam (ε-CL) with lactam-substituted silane monomers Si(ε-CL)4, Me2Si(ε-CL)2and Me3Si(ε-CL), respectively. All three silane monomers are excellent activators for the anionicε-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 ofN-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.
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DOI: --
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