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林产化学与工业 ›› 2014, Vol. 34 ›› Issue (3): 37-43.doi: 10.3969/j.issn.0253-2417.2014.03.007

• 研究报告 • 上一篇    下一篇

纤维素-甲基丙烯酸羟乙酯接枝共聚物的ATRP均相合成,结构和性能研究

俞娟1, 王春鹏1,2, 王基夫1,2, 储富祥1,2   

  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. 中国林业科学研究院 林业新技术研究所, 北京 100091
  • 收稿日期:2013-06-19 出版日期:2014-06-25 发布日期:2014-06-25
  • 通讯作者: 王基夫,副研究员,博士,主要从事生物质材料研究;E-mail:wjf118@126.com。 E-mail:wjf118@126.com
  • 作者简介:俞娟(1989- ),女,河南信阳人,硕士生,主要从事生物质材料研究
  • 基金资助:
    国家国际科技合作专项项目(2011DFA32440);国家自然科学基金资助项目(31200447)

Preparation, Characterization and Properties of Cellulose-g-PHEMA Copolymer by ATRP in Homogeneous Medium

YU Juan YU Juan1, WANG Chun-peng1,2, WANG Ji-fu1,2, CHU Fu-xiang1,2   

  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. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
  • Received:2013-06-19 Online:2014-06-25 Published:2014-06-25

摘要: 在氯化锂/N,N-二甲基乙酰胺(LiCl/DMAc)体系中,利用2-溴代异丁酰溴与纤维素的直接酯化反应首先合成了具有不同引发点数量的ATRP大分子引发剂(cell-Br);然后以CuBr/PMDETA为催化体系,cell-Br为引发剂,将2-甲基丙烯酸羟乙酯通过原子转移自由基聚合ATRP法接枝到纤维素的大分子骨架上合成纤维素-甲基丙烯酸羟乙酯接枝共聚物(cellulose-g-PHEMA)。通过FT-IR,1H NMR,GPC和 TGA对cell-Br和cellulose-g-PHEMA的结构和性能进行分析,并利用动态光散射(DLS),原子力显微镜(AFM),透射电镜(TEM)观察了cellulose-g-PHEMA的微观形貌,结果表明cellulose-g-PHEMA易于组装成直径约180 nm的球形胶束。

关键词: 原子转移自由基聚合(ATRP), 接枝共聚物, 2-甲基丙烯酸羟乙酯, 合成

Abstract: Cellulose-graft-poly(2-hydroxyethyl methacrylate) (cellulose-g-PHEMA) copolymers were prepared by atom-transfer radical polymerization (ATRP). Cellulose macroinitiators with different numbers of initiating sites for ATRP were firstly synthesized by direct acylation of cellulose with 2-bromoisobutyryl bromide in LiCl/dimethylacetamide. Subsequently, ATRP of 2-hydroxyethyl methacrylate with cellulose macroinitiators was carried out using CuBr/PMDETA as a catalyst system. Formation of copolymers was confirmed by attenuated total reflectance Fourier transform infrared and GPC.The results of DLS, AFM and TEM also confirmed the synthesis of the grafted copolymer. It showed that the cellulose-g-PHEMA copolymers were easily to be self-assembled in water into spherical micelles with a radius of around 180 nm.

Key words: atom transfer radical polymerization (ATRP), graft copolymers, 2-hydroxyethyl methacrylate, synthesis CLC number:TQ35

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