【摘要】 以苯衍生物为原料，经乙酰化反应、还原反应和脱水反应，制得苯乙烯类单体。利用乙酸钯和２，２－联吡啶组成的催化剂体系催化一氧化碳和苯乙烯类单体交替共聚，制备了聚［１－氧化－２－（取代苯基）丙撑］。采用ＩＲ、ＮＭＲ、元素分析以及广角Ｘ光散射对该聚合物以表征。对聚（１－氧代－２－苯基丙撑）固体粉末和溶液中的光降解研究发现共聚物的分子量降低、质量减少。该共聚物由于无γ－Ｈ原子，在紫外光照初期时，不能发生ＮｏｒｉｓｈⅡ型反应，只能按照ＮｏｒｒｉｓｈⅠ型反应进行光降解。此外，还对甲基丙烯酸甲酯单体于聚（１－氧代－２－苯基丙撑）间甲酚溶液中，在紫外光照射下聚合进行了研究，三乙胺对该聚合反应有促进作用。更多还原

【Abstract】  series of styrene monomers, such as 4methoxy styrene, 4ethyl styrene, 3,4dimethoxy styrene, 4bromostyrene, 2bromostyrene, 2methyl5tertbutylstyrene and 3,4dimethyl styrene, have been synthesized from benzene derivatives by acetylation, reduction and dehydrolysis reaction. Alternating copolymers of styrene monomers and carbon monoxide have been prepared using a palloadium (Ⅱ) catalyst. Characterization of these polyketones was performed by IR, NMR, EA and WXRD. The photodegradation of poly(1oxo2phenyltrimethylene) in solid powder and mcresol solution was studied. Photolysis of the copolymer resulted in molecular weight decrease and weight of sample loss. The copolymer does not undergo Norrish Type Ⅱ photolysis because of the absence of γhydrogens, while it does undergo Norrish Type Ⅰ reaction. In addition, the formation of a block copolyemr of styrenecarbon monoxide with methyl methacrylate in ultraviolet ray irradation was investigated. Triethylamine can promote the photopolymerization of methyl methacrylate in polyketone solution.更多还原