Ternary composites by an in situ hydrolytic polymerization process. Issue 26 (18th April 2018)

• Record Type: Journal Article
• Authors: Nagel, K.; Kaßner, L.; Seifert, A.; Grützner, R.-E.; Cox, G.; Spange, S.
• Is Part Of: RSC advances. Volume 8:Issue 26(2018)
• Page Start: 14713
• Page End: 14721
• Publication Date: 2018-04-18
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra02402b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Polyamide 6/silica/polysiloxane composites have been prepared in a one-step process using lactam-substituted silicon monomers. Abstract : 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)4 ), has been combined with other silicon monomers with one or two methyl groups (MeSi(ε-CL)3 and Me2 Si(ε-CL)2 ). The simultaneous polymerization of ε-CL and silicon monomers leads to the in situ 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.