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首页> 外文期刊>Journal of Applied Polymer Science >Free radical oxidative copolymerization of indene with vinyl acetate and isoprovenyl acetate: Synthesis and characterization
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Free radical oxidative copolymerization of indene with vinyl acetate and isoprovenyl acetate: Synthesis and characterization

机译：茚与乙酸乙烯酯和乙酸异丙烯酯的自由基氧化共聚：合成与表征

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摘要

Copolyperoxides of different compositions of indene with vinyl acetate and isopropenyl acetate were synthesized by the free radical-initiated oxidative copolymerization. The compositions of copolyperoxides obtained from H-1- and C-13-NMR spectra have been used to determine the reactivity ratio of the monomers. The reactivity ratios reveal that the copolyperoxides contain a larger proportion of the indene units in random placement. The NMR studies further suggest irregularities in the copolyperoxide chain possibly due to the cleavage reactions of the propagating peroxide radical. The thermal analysis by differential scanning calorimetry (DSC) supports the alternating peroxide units in the copolymer chain. The activation energy for the thermal degradation suggests that the degradation is dependent on the dissociation of the peroxide (-O-O-) bonds in the copolyperoxide chain. (C) 2002 Wiley Periodicals, Inc. [References: 35]
机译：通过自由基引发的氧化共聚反应合成了不同组成的茚与乙酸乙烯酯和乙酸异丙烯酯的共聚过氧化物。由H-1-和C-13-NMR光谱获得的共聚过氧化物的组成已用于确定单体的反应率。反应率表明，共聚过氧化物在随机放置中包含较大比例的茚单元。 NMR研究进一步表明，共聚过氧化物链中的不规则性可能是由于传播的过氧化物自由基的裂解反应所致。通过差示扫描量热法（DSC）进行的热分析支持了共聚物链中交替的过氧化物单元。热降解的活化能表明该降解取决于共聚过氧化物链中过氧化物（-O-O-）键的解离。 （C）2002 Wiley Periodicals，Inc. [参考：35]

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