化工进展 ›› 2015, Vol. 34 ›› Issue (02): 490-494,499.DOI: 10.16085/j.issn.1000-6613.2015.02.029

• 材料科学与技术 • 上一篇    下一篇

亲水基团性质对双亲性壳聚糖衍生物单分子膜性能的影响

毛扬帆, 辛梅华, 李明春   

  1. 华侨大学材料科学与工程学院, 环境友好功能材料教育部工程中心, 福建 厦门 361021
  • 收稿日期:2014-05-22 修回日期:2014-06-17 出版日期:2015-02-05 发布日期:2015-02-05
  • 通讯作者: 李明春,教授,博士生导师,研究方向为功能高分子材料研究。E-mail:mcli@hqu.edu.cn
  • 作者简介:毛扬帆(1985-),女,博士研究生
  • 基金资助:
    福建省重点科技项目(2009H0030)、福建省自然科学基金(2011J01312,2012J01396)及科技部科技人员服务企业项目(2009GJC40030)

Effect of hydrophilic group on monolayer propertie of N,N-dilauryl chitosan derivatives

MAO Yangfan, XIN Meihua, LI Mingchun   

  1. College of Material Science and Engineering, Huaqiao University, Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Xiamen 361021, Fujian, China
  • Received:2014-05-22 Revised:2014-06-17 Online:2015-02-05 Published:2015-02-05

摘要: 制备了双亲性O-磺化-N,N-双十二烷基壳聚糖(HSDLCS)、O-季铵化-N,N-双十二烷基壳聚糖(QADLCS)和O-羟丙基-N,N-双十二烷基壳聚糖(HPDLCS),研究了不同亲水基团对产物单分子膜性能的影响。结果表明,与N,N-双十二烷基壳聚糖(DLCS)相比,引入亲水基团后的产物其单分子膜具有较高的崩溃压(πc)和最大压缩模量(Cs-1,max),凝聚性更好。与非离子型产物HPDLCS相比,离子型产物具有较大的πcCs-1,max,其中阴离子型产物HSDLCS单分子膜的πc(44.64mN/m)和Cs-1,max(84.27mN/m)最大,阳离子型产物QADLCS(πc,42.01mN/m;Cs-1,max,82.99mN/m)次之,HSDLCS单分子膜具有较强的凝聚性和抗形变能力。

关键词: 壳聚糖, 亲水基团, 烷基化, 双亲性, 单分子膜

Abstract: O-sulfonated-N,N-dilauryl chitosan (HSDLCS),O-quaternized-N,N-dilauryl chitosan (QADLCS) and O-hydroxypropyl-N,N-dilauryl chitosan (HPDLCS) with similar substitution were synthesized. The effect of hydrophilic group on monolayer properties of N,N-dilauryl chitosan derivatives was studied. Experimental results indicated that monolayers of N,N-dilauryl chitosan derivatives with different hydrophilic group had larger collapse pressure πc and maximum compression modulus (Cs-1,max) compared with N,N-dilauryl chitosan and also had better cohesion. Inonic products had larger collapse pressure πc and maximum compression modulus (Cs-1,max) compared with nonionic product HPDLCS. Anionic HSDLCS monolayer had largest πc (44.64mN/m)and Cs-1,max (84.27mN/m)among three products,and cationic QADLCS had second largest πc (42.01mN/m) and Cs-1,max (82.99mN/m). HSDLCS monolayer had stronger cohesion and resistance to deformation capacity.

Key words: chitosan, hydrophilic group, dialkylated, amphiphilic, monolayers

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