A series of bisetherfluorene polycarbonates with similar structure and similar molecular weight were synthesized from diphen-yl carbonate,bisphenol A,bietherfluorene by melting transesterification method;the trimonomeric copolymerization structure of the product was verified by infrared spectroscopy and nuclear magnetic resonance hydrogen spectroscopy;the molecular weight and polydis-persity of the product were detected by gel permeation chromatography.The product has a high glass transition temperature up to 155℃,the temperature range of the fastest thermal decomposition rate was 160～200℃,the initial decomposition temperature was 360℃,the fastest decomposition temperature was 378℃,and the activation energy of the decomposition reaction was 133～274 kJ·mol-1.
关键词
双醚芴型聚碳酸酯/耐热性/分解温度/活化能
Key words
bietherfluorene polycarbonate/thermal resistance/decomposition temperature/activation energy
万方数据