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现代化工  2018, Vol. 38 Issue (8): 130-134    DOI: 10.16606/j.cnki.issn0253-4320.2018.08.028
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
异山梨醇型聚碳酸酯的共聚改性研究
陈柳, 魏永梅, 王涛, 田恒水
华东理工大学化工学院, 上海 200237
Study on copolymerization and modification of isosorbide-derived polycarbonate
CHEN Liu, WEI Yong-mei, WANG Tao, TIAN Heng-shui
School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
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摘要 以乙酰丙酮锂(LiAcac)为催化剂,脂肪族直链二醇(1,4-丁二醇、1,5-戊二醇、1,6-己二醇和1,8-辛二醇)、异山梨醇(IS)和碳酸二苯酯(DPC)为原料,通过熔融酯交换法合成了一系列脂肪族二醇/异山梨醇共聚碳酸酯(PIAC),产品特性黏数为48.3~85.7 mL/g。考察了不同1,4-丁二醇/异山梨醇投料摩尔比对合成反应的影响。结果表明,随丁二醇用量的增大,热稳定性降低,共聚产品Tg下降,但分子链的柔韧性增强,产品力学性能得到改善。同时考察了等摩尔不同种类的直链二醇对性能的影响,结果表明,随着分子链中二醇亚甲基数的增加,共聚产品Tg逐渐降低,但热稳定性逐渐提高,分子链力学性能明显增强,1,8-辛二醇改性产品的断裂伸长率达到575.2%。
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陈柳
魏永梅
王涛
田恒水
关键词:  熔融酯交换  脂肪族二醇  异山梨醇  碳酸二苯酯  共聚碳酸酯    
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%.
Key words:  melt transesterification    aliphatic diols    isosorbide    diphenyl carbonate    copolymerized carbonate
收稿日期:  2018-01-04      修回日期:  2018-06-07           出版日期:  2018-08-20
TQ323.4  
通讯作者:  田恒水(1958-),男,硕士,教授,主要从事精细化工和高分子合成研究,通讯联系人,hstian@ecust.edu.cn    E-mail:  hstian@ecust.edu.cn
作者简介:  陈柳(1993-),女,硕士研究生,主要从事高分子材料研究,emon17@126.com。
引用本文:    
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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http://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2018.08.028  或          http://www.xdhg.com.cn/CN/Y2018/V38/I8/130
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