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本文首次研究了稀土络合催化环硫丙烷开环聚合。发现稀土元素膦酸盐、环烷酸盐及乙酰丙酮盐与三异丁基铝或三乙基铝、水组成的络合催化剂是环硫丙烷开环聚合的优良催化剂,在甲苯中呈均相聚合、活性大,聚合物分子量高(几百万)。聚合反应速度对单体浓度、催化剂浓度分别呈一级关系,聚合活化能为61.4kJ/mol。并用~(13)C-NMR谱,X-ray衍射,GPC,DSC等研究了稀土聚环硫丙烷链结构。
In this paper, the first study of rare earth complex catalyst epichlorohydrin ring-opening polymerization. Found that rare earth elements phosphonates, naphthenates and acetylacetonates and triisobutylaluminum or triethylaluminum, water complex catalyst composed of epichlorohydrin ring-opening polymerization of excellent catalyst in toluene was homogeneous Polymerization, activity, polymer high molecular weight (millions). The polymerization rate of monomer concentration, catalyst concentration were first-order relationship, the polymerization activation energy of 61.4kJ / mol. The structure of rare earth polythiopropanethiol chain was studied by ~ (13) C-NMR spectroscopy, X-ray diffraction, GPC and DSC.