华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (12): 66-70,96.

• 材料科学与技术 • 上一篇    下一篇

EDC/NHS 交联对胶原物理化学性能的影响

王迎军 杨春蓉 汪凌云   

  1. 华南理工大学 材料科学与工程学院,广东 广州 510640
  • 出版日期:2007-12-25 发布日期:2007-12-25
  • 通信作者: 王迎军(1954-) ,女,教授,博士生导师,主要从事生物医用材料和组织工程材料研究. E-mail:imwangyj@scut. edu. cn
  • 作者简介:王迎军(1954-) ,女,教授,博士生导师,主要从事生物医用材料和组织工程材料研究.
  • 基金资助:

    国家"973" 重大基础研究项目(2006CB623知) ;广东省自然科学基金团队项目(4205786 )

Influence of EDC/NHS Crosslinking on Physicochemical Properties of Collagen

Wang Ying-jun  Yang Chun-rong  Wang Ling-yun   

  1. School of Materials Science and Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Online:2007-12-25 Published:2007-12-25
  • Contact: 王迎军(1954-) ,女,教授,博士生导师,主要从事生物医用材料和组织工程材料研究. E-mail:imwangyj@scut. edu. cn
  • About author:王迎军(1954-) ,女,教授,博士生导师,主要从事生物医用材料和组织工程材料研究.
  • Supported by:

    国家"973" 重大基础研究项目(2006CB623知) ;广东省自然科学基金团队项目(4205786 )

摘要: 了提高肢原的物理化学性能,采用1- 乙基-3: (3-二甲基氨丙基)-碳化二亚胺(EDC) 和N-羟基琥珀酰亚胺(NHS) 交联剂对胶原进行交联,考察了不同交联剂浓度对胶原物理化学性能的影响,并通过红外、差示扫描量热分析( DSC) 、吸水率、膨胀动力学、抗酶解性能、扫描电镜(SEM) 等技术手段对胶原交联前后的性能进行表征.研究结果表明,胶原经EDC/NHS 交联后,热稳定性、形态稳定性增强,抵抗酶解的能力显著增加,胶原的显微结构由支联前的无序状态变为紧密有序的结构.说明EDC/NHS 交联可有效改善肢原的物理化学性能.

关键词: 胶原, 交联, 物理化学性能, 1- 乙基-3-( 3-二甲基氨丙基) -碳化二亚胺, N-羟基琥珀酰亚胺

Abstract:

In order to improve the physicochemical properties of collagen , l-ethyl-3 -( 3 -dimethyl aminopropyl) carbodiimide (EDC) /N -hydroxysuccinimide (NHS) was used as a crosslinking agent for collagen matrices , and the effect of crosslinking agent dosage on the physicochemical properties of collagen was investigated. Then , the measurements of FT -IR , DSC and SEM were performed and the water absorption , the swelling ratio and the collagenase resistance were tested to characterize the physicochemical properties of the collagen before and after the crosslinking. The results demonstrate that , after the crosslinking , the thermal stability , the morphological stability and the enzymatic resistance all improve significantly , and that the disordered microstructure of collagen changes to a dense and ordered state. It is thus concluded that the EDC/NHS crosslinking greatly improves the physicochemical properties of collagen.

Key words: collagen, crosslinking, physicochemical property, l-ethyl-3- (3 -dimethyl aminopropyl) carbodiimide, N -hydroxysuccinimide