Preparation and Properties of Modified EPDM/Silica Composites

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Title:	Preparation and Properties of Modified EPDM/Silica Composites
Authors:	王學平;葉倍宏;石燕鳳 Shyue-Pyng Wang;Pei-Hung Yeh;Yu-Hsun Nien;Yeng-Fong Shih
Contributors:	應用化學系
Keywords:	EPDM;Maleation;Sol-Gel Process;FT-IR;Polyimide
Date:	2009
Issue Date:	2011-03-01 10:25:49 (UTC+8)
Abstract:	In this study, a novel approach to form organic-inorganic polymeric materials has been prepared through the sol-gel process to graft on polymeric matrix. First of all, modifications of ethylene propylene diene monomer (EPDM) using maleic anhydride (MAH) to graft on polymer backbone, and further, using ethanolamine or 3-aminopropyltriethoxysilane to form grafted polyimide had been prepared. Under acid catalysis, tetraethoxysilane (TEOS) was used as the primary inorganic precursor and variously modified EPDM were used as the sources of the organic component. The organic-inorganic polymeric materials had been prepared and examined using fourier transform infrared spectrometer (FT-IR), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). The results of FT-IR studies show the C=O absorption peak of MAH at 1784cm-1 and the degree of grafting of MAH about 2.9% on EPDM main chain. The organic-inorganic composites have absorption peaks at 1,000~1,100 cm-1 and 830~850 cm-1 that imply the formation of the Si-O-Si network structures and the Si-O-Si linear structures in the polymeric composites, respectively. The morphology of polymer composites was viewed with SEM to examine phase distribution and structure. The images of SEM show that the phase distribution of inorganic component evenly disperses on the polymer matrix to form compatible organic-inorganic hybrid materials. From the thermal properties of TGA studies, the temperatures at 10% and 50% weight loss of polymeric composites containing the network structure of inorganic oxide are much higher than those of corresponding modified EPDM.
Appears in Collections:	[應用化學系] 期刊/會議/專書論文

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