高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (12): 2521.

• 研究论文 • 上一篇    

酶促聚合与ATRP结合合成聚己内酯和聚N,N-二甲氨基甲基丙烯酸乙酯嵌段共聚物及其自组装

刘林林1,2,王书唯1,李亚鹏1,撒宗朋1,祝明1,潘斯1,杨艳明2   

  1. 1. 吉林大学麦克德尔米德实验室, 长春 130012;
    2. 吉林大学第二医院, 长春 130041
  • 收稿日期:2010-07-27 修回日期:2010-11-01 出版日期:2010-12-10 发布日期:2010-12-06
  • 通讯作者: 李亚鹏 E-mail:liyapeng@jlu.edu.cn
  • 作者简介:李亚鹏, 男, 博士, 副教授, 主要从事医用高分子材料的研究.
  • 基金资助:

    国家自然科学基金(批准号: 20904014)和教育部博士点基金(批准号: 20090061110017)资助.

Synthesis of Amphiphilic Block Copolymer PCL-b-PDMAEMA by the Combination of Enzymatic-promoting Polymerization with ATRP and Its Self-assembly Behavior

LIU Lin-Lin1,2, WANG Shu-Wei1, LI Ya-Peng1*, SA Zong\|Peng1, ZHU Ming1, PAN Si1, YANG Yan-Ming2   

  1. 1. A. G. McDiarmid Institute, Jilin University, Changchun 130012, China;
    2. The Second Hospital of Jilin University, Changchun 130041, China
  • Received:2010-07-27 Revised:2010-11-01 Online:2010-12-10 Published:2010-12-06
  • Contact: Li Ya-Peng E-mail:liyapeng@jlu.edu.cn
  • About author:李亚鹏, 男, 博士, 副教授, 主要从事医用高分子材料的研究.
  • Supported by:

    国家自然科学基金(批准号: 20904014)和教育部博士点基金(批准号: 20090061110017)资助.

摘要: 摘要:用化学酶法合成聚己内酯(PCL)和聚N,N-二甲氨基甲基丙烯酸乙酯(PDMAEMA)双亲嵌段聚合物(PCL-b-PDMAEMA)。通过核磁共振(1H NMR),红外光谱仪(FTIR-IR),凝胶渗透色谱(GPC) 对其结构以及分子量与其分子量分布情况进行了表征。对聚合物的溶液性质进行了研究,结果表明:临界胶束浓度(CMC)嵌段聚合物中疏水链段增多有利于形成胶束,表现为CMC降低,并具有较高的热力学稳定性。PDMAEMA是PH和温度敏感材料,研究发现,在不同的温度和pH值条件下表现不同的聚集状态, 当聚合物的pH值降低时平均流体力学直径增加,温度升高平均流体力学直径降低。

关键词: 化学酶法, 双亲性嵌段共聚物, 溶液性质

Abstract: Abstract: Amphiphilic poly(caprolactone)-block-poly(dimethylaminoethyl methacrylate) (PCL-b-PDMAEMA) is synthesized utilizing a chemoenzymatic approach. The structure, molecular weight and its distribution of the resultant are characterized by H-1 Nuclear Magnetic Resonance (1H NMR), Fourier Transfer Infrared Spectra (FT-IR), Gel Permeation Chromatography (GPC). The properties of the solution of the resultant is studied, suggesting an increased tendency of forming micelle in aqueous media with a higher proportion of hydrophobic segments in the polymer, demonstrating a decreased Critical Micelle Concentration and higher thermodynamic stability. Previous studies indicate that PDMAEMA is responsive to temperature and pH, having various configurations in different temperature and pH: average hydraulic diameter increases with a decreased pH and/or decreased temperature.

Key words: Chemoenzymatic, Amphiphilic block copolymer, solution properties

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