摘要
研究了稳定自由基存在下苯乙烯的活性聚合 .发现在β-酮酸酯 [乙酰乙酸乙酯 ( AAE) ,乙二酸二乙酯( DEM) ],1 ,3-二酮 [乙酰丙酮 ( AAT) ]及强酸酐 [三氟乙酸酐 ( TFA) ]的少量存在下 ,苯乙烯聚合速率显著增加 ,分子量可控 ,分子量分布较窄 .而有机强酸 [氯乙酸 ( CAA) ,溴乙酸 ( BAA) ,2 ,4 ,6-三硝基苯酚 ( TNP)
Living free radical polymerizations of styrene were studied with the initiator of benzoyl peroxide in the presence of TEMPO(2,2,6,6 tetramethylpiperidinyl 1 oxy). The purpose of this paper is to explore the polymerization rate enhancement by means of using additives. It was found that styrene polymerization was distinctly accelerated by the addition of small amounts of a 1,3 diketone(acetylacetone, AAT) , a β keto ester(acetoacetic ester, AAE) or diethyl malonate(DEM) and a strong organic anhydride(trifluoroacetic acid anhydride, TFA). However, some of strong organic acid, chloroacetic acid(CAA), bromoacetic acid(BAA) and 2,4,6 trinitrophenol(TNP) did not enhance the rate of the stable free radical mediated polymerization.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第2期318-320,共3页
Chemical Journal of Chinese Universities
基金
固体表面物理化学国家重点实验室基金 (批准号 :1130 )资助
