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化学学报
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化学学报 ›› 2008, Vol. 66 ›› Issue (5): 541-544. 上一篇    下一篇

研究论文

壳聚糖-碳纳米管/壳聚糖半互穿网络水凝胶的机械性能及pH敏感性

唐金春，黄可龙*，于金刚，刘素琴   

  1. (中南大学化学化工学院 长沙 410083)
  • 投稿日期:2007-08-29 修回日期:2007-10-31 发布日期:2008-03-14
  • 通讯作者: 黄可龙

Mechanical Property and pH Sensitivity of Chitosan-Carbon Nanotube/Chitosan Semi-Interpenetrating Hydrogel

TANG Jin-Chun, HUANG Ke-Long* ,YU Jin-Gang ,LIU Su-Qin   

  1. (College of Chemistry and Chemical Engineering, Central South University, Changsha 410083)
  • Received:2007-08-29 Revised:2007-10-31 Published:2008-03-14
  • Contact: HUANG Ke-Long

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995

被引次数

41 | 5

为制备具有较高机械性能的壳聚糖凝胶, 设计将壳聚糖-碳纳米管复合物引入壳聚糖凝胶网络. 以戊二醛为交联剂, 采用冷冻干燥的方法制备了一系列壳聚糖-碳纳米管/壳聚糖半互穿网络凝胶. 测试了凝胶的机械性能, 考察了凝胶在不同pH值缓冲溶液中的去溶胀和溶胀行为. 实验结果表明, 添加壳聚糖-碳纳米管复合物的凝胶与普通壳聚糖凝胶相比机械强度明显增加, 而凝胶本身的pH敏感性不受影响.

关键词: 碳纳米管, 纳米复合物, pH敏感性, 机械性能

To prepare chitosan (CS) hydrogels with high mechanical properties, chitosan-carbon nanotube (CNT-CS) composites were added into CS hydrogels. A series of CS-CNT/CS semi-IPN (interpenetrating) hydrogels were prepared by a pre-freezing and sequentially freeze-drying technique using glutaraldehyde as a crosslinker. The mechanical properties of all hydrogels were tested. In the buffer solutions with different pH values, the deswelling and swelling behavior of CS-CNT/CS semi-IPN was studied. In contrast with the normal CS hydrogel, the mechanical strength of these semi-IPN hydrogels was remarkably improved, while the pH sensitivities were well preserved.

Key words: carbon nanotube, nanocomposite, pH sensitivity, mechanical property