Nagel K, Kaßner L, Seifert A, Grützner R-E, Cox G, Spange S
Polymer Chemistry, Technische Universität Chemnitz 09107 Chemnitz Germany
BASF SE 67056 Ludwigshafen am Rhein Germany.
RSC Adv. 2018 Apr 18;8(26):14713-14721. doi: 10.1039/c8ra02402b. eCollection 2018 Apr 17.
Polyamide 6/modified silica composite materials have been prepared by a coupled polymerization procedure. For this purpose, the three-component-system we presented in a previous publication, consisting of ε-aminocaproic acid (ε-ACA), ε-caprolactam (ε-CL), and 1,1',1'',1'''-silanetetrayltetrakis-(azepan-2-one) (Si(ε-CL)), has been combined with other silicon monomers with one or two methyl groups (MeSi(ε-CL) and MeSi(ε-CL)). The simultaneous polymerization of ε-CL and silicon monomers leads to the formation of silica/polysiloxane particles and the surrounding polyamide 6 matrix in one step. Moreover, 3-aminopropyltriethoxysilane has been added to the three-component-system to achieve covalent bonding between organic and inorganic phases and to inhibit agglomeration of the silica particles. Chemical structures and morphologies of the composites have been investigated by solid-state NMR and FTIR spectroscopy as well as electron microscopy and SEC measurements. Structural effects on thermal properties have been studied by DSC and TGA measurements.
聚酰胺6/改性二氧化硅复合材料已通过耦合聚合法制备。为此，我们在之前的一篇出版物中提出的由ε-氨基己酸（ε-ACA）、ε-己内酰胺（ε-CL）和1,1',1'',1'''-硅烷四醇四（氮杂环庚烷-2-酮）（Si(ε-CL)）组成的三组分体系，已与其他带有一个或两个甲基的硅单体（MeSi(ε-CL)和MeSi(ε-CL)）相结合。ε-CL和硅单体的同时聚合一步导致二氧化硅/聚硅氧烷颗粒和周围聚酰胺6基体的形成。此外，已将3-氨丙基三乙氧基硅烷添加到三组分体系中，以实现有机相和无机相之间的共价键合，并抑制二氧化硅颗粒的团聚。通过固态核磁共振和傅里叶变换红外光谱以及电子显微镜和尺寸排阻色谱测量对复合材料的化学结构和形态进行了研究。通过差示扫描量热法和热重分析测量研究了结构对热性能的影响。
