Acta Chimica Sinica ›› 2008, Vol. 66 ›› Issue (5): 541-544. Previous Articles     Next Articles

Original Articles

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)
  • 收稿日期:2007-08-29 修回日期:2007-10-31 出版日期:2008-03-14 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 Online:2008-03-14 Published:2008-03-14
  • Contact: HUANG Ke-Long

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