Abstract: A series of polymerized isosorbide/aliphatic diols carbonates (PIACs) with characteristic viscosity numbers ranging from 48.3-85.7 mL·g-1 are synthesized through melt transesterification with LiAcac as catalyst,and aliphatic straight chain diols (1,4-butanediol,1,5-amyl glycol,1,6-hexanediol and 1,8-octanediol),isosorbide and diphenyl carbonate as raw materials.The effects of different mole ratios of 1,4-butanediol/isosorbide are investigated,indicating that the increase in the amount of butanediol leads to a reduction in thermal stability and Tg of the copolymer,but enhances the flexibility of the molecular chain and improves the mechanical properties of the copolymer.The effects of different equimolar aliphatic diols on the properties of the copolymer are also investigated,showing that the increase of the number of methylene groups in the molecular chain can cause the thermal stability of the copolymer to increase gradually,help the mechanical properties of the molecular chains to increase obviously but make Tg of the copolymer decrease gradually.The elongation at break of the copolymer modified by 1,8-octanediol modified products reaches 575.2%.
陈柳, 魏永梅, 王涛, 田恒水. 异山梨醇型聚碳酸酯的共聚改性研究[J]. 现代化工, 2018, 38(8): 130-134.
CHEN Liu, WEI Yong-mei, WANG Tao, TIAN Heng-shui. Study on copolymerization and modification of isosorbide-derived polycarbonate. Modern Chemical Industry, 2018, 38(8): 130-134.
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