In situ binary sol-gel reaction of various trifunctional alkoxysilane in the silane-grafted Polyolefin matrix and its effect upon the mechanical ... article from: Polymer Engineering and Science

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From the author: The vinyltrimethoxysilane-grafted ethylene-propylene copolymer/trifunctional methoxysilane (EPR-g-VTMS/RTMS) composites were prepared via in situ silica solgel reactions. Five trifunctional methoxysilane compounds (n-hexyltrimethoxysilane, n-decyltrimethoxysilane, n-tetradecyltrimethoxysilane, n-octadecyltrime-thoxysilane, and phenyltrimethoxysilane) have been selected for this study. The water-cross-linked EPR-g-VTMS/RTMS composites were characterized by attenuated total reflectance-Fourier transform infrared spectroscopy, gel content, solid-state [.sup.29.Si] CP/MAS NMR, wide-angle x-ray scattering, tensile strength, and field emission scanning electron microscopy measurements. The type of RTMS additive has a substantial influence on the nature of siloxane band networks and eventually the mechanical tensile properties. This finding suggests that the interaction and/or entanglement between the EPR-g-VTMS matrix and the substituent of the RTMS additives are crucial for the modifying mechanical properties. Moreover, for the water-cross-linked EPR-g-VTMS/CnTMS (n = 6, 10, 14, and 18) composites, the joint evidence provided by attenuated total reflectance-Fourier transform infrared spectroscopy, [.sup.29.Si] CP/MAS NMR, and wide-angle x-ray scattering results suggested the formation of ladder-type poly(n-alkyl silsesquioxane)s and the presence of the highly ordered structure with a thickness equal to the length of two n-alkyl groups in all-trans conformation. POLYM. ENG. SCI., 51:632-640, 2011. [C]2010 Society of Plastics Engineers

Citation Details
Title: In situ binary sol-gel reaction of various trifunctional alkoxysilane in the silane-grafted Polyolefin matrix and its effect upon the mechanical properties.
Author: Kenta Adachi
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: April 1, 2011
Publisher: Society of Plastics Engineers, Inc.
Volume: 51 Issue: 4 Page: 632(9)

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