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林产化学与工业 ›› 2019, Vol. 39 ›› Issue (1): 75-80.doi: 10.3969/j.issn.0253-2417.2019.01.011

• 研究报告 • 上一篇    下一篇

ATRP法制备纤维素-油脂-糠醛热塑性弹性体及性能表征

卢传巍1,2,王春鹏1,储富祥1,王基夫1,*()   

  1. 1. 中国林业科学研究院 林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局 林产 化学工程重点开放性实验室;江苏省 生物质能源与材料重点实验室,江苏 南京 210042
    2. 南京林业大学 江苏省林业资源高效加工利用协同创新中心,江苏 南京 210037
  • 收稿日期:2018-09-10 出版日期:2019-02-25 发布日期:2019-03-14
  • 通讯作者: 王基夫 E-mail:wjf118@126.com
  • 作者简介:卢传巍(1992—),男,山东德州人,硕士生,主要从事生物质材料功能化研究工作
  • 基金资助:
    国家自然科学基金资助项目(31570579);中央级公益性科研院所基本科研业务费专项资金(CAFYBB2017ZF003)

Preparation and Characterization of Cellulose-fattyacid-furfural Derived Thermoplastic Elastomer via ATRP

Chuanwei LU1,2,Chunpeng WANG1,Fuxiang CHU1,Jifu WANG1,*()   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
    2. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
  • Received:2018-09-10 Online:2019-02-25 Published:2019-03-14
  • Contact: Jifu WANG E-mail:wjf118@126.com
  • Supported by:
    国家自然科学基金资助项目(31570579);中央级公益性科研院所基本科研业务费专项资金(CAFYBB2017ZF003)

摘要:

通过“从主链接枝”原子转移自由基聚合(ATRP)法,采用分步聚合策略,成功制备了一种乙基纤维素接枝嵌段共聚物乙基纤维素-g-甲基丙烯酸月桂酯-b-甲基丙烯酸四氢糠基酯(EC-g-P(LMA-b-THFMA))。对聚合物的热力学性能研究发现:共聚物中存在两个热转变,分别发生在-35 ℃和49~56 ℃时,表明该共聚物存在微相分离;机械性能分析表明该共聚物具有优异的热塑性弹性体行为,伸长率为89%~147%,拉伸强度为1.7~9.5 MPa。循环拉伸机械性能研究表明EC-g-P(LMA-b-THFMA200)的弹性恢复系数高达92%以上。乙基纤维素接枝共聚物的机械性能具有明显的增强作用,较线性聚合物P(LMA-b-THFMA)的机械强度提高了1.36倍。

关键词: ATRP, 纤维素, 接枝共聚物, 热塑性弹性体

Abstract:

The grafted block copolymers, ethyl cellulose-g-lauryl methacrylate-b-tetrahydrofurfuryl methacrylate(EC-g-P(LMA-b-THFMA)) was successfully prepared via "grafting from" atom transfer radical polymerization(ATRP) through two-step polymerization strategy. Thermal property analysis showed that this copolymer had two thermal transitions(-35 ℃ and 49-56 ℃), indicating of the presence of microphase separation in the copolymer. Mechanical property analysis showed that the copolymer had excellent thermoplastic elastomer behavior with the elongation of 89%-147% and tensile strength of 1.7-9.5 MPa. The cycilic tensile mechanical properties analysis indicated that the elastic recovery of EC-g-P(LMA-b-THFMA200) was more than 92%. Compared with the linear block polymer P(LMA-b-THFMA), it could be found that the introduction of cellulose significantly enhanced the mechanical properties of graft copolymer. The mechanical strength of graft copolymer was increased by 1.36 times while compared with that of P(LMA-b-THFMA).

Key words: ATRP, cellulose, graft copolymer, thermoplastic elastomer

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