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Preparation of poly (methyl methacrylate)/nanometer calcium carbonate composite by in-situ emulsion polymerization 总被引：1，自引：0，他引：1
INTRODUCTION In recent decades, extensive research effortshave been directed towards the preparation andcharacterization of polymer/inorganic nanometerparticles composite (Siegel, 1994). Nanometer in-organic particles easily agglomerate because oftheir high surface energy, so it is difficult to achievethe homogeneous dispersion of nanoparticles inpolymer matrix. Surface modification of an inor-ganic particle with an organic substance is a usefulway to reduce its surface energy, to i… 相似文献
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ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｍｅｃｈａｎｉｃａｌｐｒｏｐｅｒｔｉｅｓｏｆｐｌａｓｔｉｃｉｚｅｄＰＶＣａｒｅｖｅｒｙｓｔｒｏｎｇｅｖｅｎｉｆｔｈｅｍａｔｅｒｉａｌｉｓｕｓｅｄｗｅｌｌａｂｏｖｅｉｔｓｇｌａｓｓｔｒａｎｓｉｔｉｏｎｔｅｍｐｅｒａｔｕｒｅ(Ｔｇ).Ｔｈｅｆｌｏｗａｎｄｖｉｓｃｏｅｌａｓｔｉｃｂｅｈａｖｉｏｒａｒｅｓｉｍｉｌａｒｔｏｔｈａｔｏｆａｌｉｇｈｔｌｙｃｒｏｓｓｌｉｎｋｅｄｒｕｂｂｅｒ.Ｔｈｉｓｈａｓｂｅｅｎｔｈｅｓｕｂｊｅｃｔｏｆｍｕｃｈｄｅｂａｔｅ,ｂｕｔｔｈｅｍｏｓｔｒｅａｓ… 相似文献
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Methyl methacrylate (MMA) emulsion polymerization in the presence of nanometer calcium carbonate (nano-CaCO3) surface modified with (-methacryloxypropyltrimethoxysilane (MPTMS) was carried out to prepare poly (methyl methacrylate) (PMMA)/nano-CaCO3 composite. The reaction between nano-CaCO3 and MPTMS, and the grafting of PMMA onto nano-CaCO3 were confirmed by infrared spectrum. The grafting ratio and grafting efficiency of PMMA on nano-CaCO3 modified with MPTMS were much higher than that on nano-CaCO3 modified with stearic acid. The grafting ratio of PMMA increased as the weight ratio between MMA and nano-CaCO3 increased, while the grafting efficiency of PMMA decreased. Transmission electron micrograph showed that nano-CaCO3 covered with PMMA was formed by in-situ emulsion polymerization. 相似文献
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本文综述了酚醛-重氮萘醌正性抗蚀剂的溶解抑制机理,主要包括(1)分子间氢键作用机理;(2)偶联反应机理;(3)两步即静态、动态溶解抑制机理;(4)表面沉积溶解抑制机理;(5)酚醛树脂的分子溶解及相关的抑制机理. 相似文献
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