碳化二亚胺/羟基丁二酰亚胺交联改性胶原蛋白纤维制备及其性能

doi:10.13475/j.fzxb.20190401407

摘要/Abstract

摘要：

为解决由湿法纺丝工艺制备的牛肌腱胶原蛋白纤维力学性能差、遇水易溶解等问题,采用1-乙基-3-(3-二甲基丙基)碳化二亚胺盐酸盐/N-羟基丁二酰亚胺(EDC/NHS)对胶原蛋白纤维进行交联改性。探究了原位交联方式的最优交联时间和交联剂质量分数,并着重对比了原位交联与交联浴交联2种交联方式对胶原蛋白纤维性能的影响。结果表明:原位交联可显著改善胶原蛋白纤维的性能,最优的交联时间和交联剂质量分数分别为11 h、15%,此时纤维断裂强度可达1.44 cN/dtex左右,较纯胶原蛋白纤维提高了35.8%,较交联浴交联纤维提高了19.0%;与主要发生在纤维表面的交联浴交联相比,原位交联能够使纤维内部的微纤结构更加致密,性能得到更为显著的提升,由原位交联制备的胶原蛋白纤维性能优于交联浴交联制备的纤维。

关键词: 胶原蛋白纤维, 湿法纺丝, 原位交联, 交联浴交联, 力学性能

Abstract:

In order to deal with problems in poor mechanical properties and water-dissolving, a collagen fiber prepared from bovine tendon type I collagen via wet spinning method process was modified by 1-ethyl-3-(3-dimethylpropys carbodiimide/N-hydroxysuccinimide)(EDC/NHS) crosslinking. The optimal reaction time and crosslinking concentration of EDC/NHS in the in-situ crosslinking mode were explored, and the effects of two crosslinking methods of in-situ crosslinking and bath crosslinking on the properties of collagen fibers were compared. The results show that in-situ crosslinking can significantly improve the performance of collagen fibers. The optimum crosslinking time and crosslinker concentration of in-situ crosslinking are 11 h and 15%, respectively. In this situation, the fiber breaking strength reached about 1.44 cN/dtex, which is 35.8% higher than that of the pure collagen fiber and 19.0% higher than that of bath crosslinked fiber. Compared with crosslinking baths that the crosslinking reaction mainly occur on the fiber surface, and in-situ crosslinking makes the microfibrous structure inside the fiber denser and the performance is improved more obviously. Furthermore, the performance of in-situ crosslinked collagen fibers is better than that of bath crosslinked collagen fibers.

Key words: collagen fiber, wet spinning, in-situ crosslinking, bath crosslinking, mechanical properties

中图分类号:

TQ342.94

岳程飞, 丁长坤, 李璐, 程博闻. 碳化二亚胺/羟基丁二酰亚胺交联改性胶原蛋白纤维制备及其性能[J]. 纺织学报, 2020, 41(03): 1-7.

YUE Chengfei, DING Changkun, LI Lu, CHENG Bowen. Carbodiimide/hydroxysuccinimide crosslinking modification and properties of collagen fibers[J]. Journal of Textile Research, 2020, 41(03): 1-7.

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纤维名称	单纤维接触角/(°)		吸水率/%
纤维名称	0 s	60 s	吸水率/%
纯胶原蛋白纤维	105.0±3.0	78.0±4.0	514.3±22.0
交联浴交联胶原蛋白纤维	117.0±4.0	90.0±3.0	200.0±19.0
原位交联胶原蛋白纤维	120.1±4.0	100.0±3.0	155.6±26.0

纤维名称	断裂强度/(cN·dtex^-1)	断裂伸长率/%
纯胶原蛋白纤维	1.06±0.03	28±2
交联浴交联胶原蛋白纤维	1.21±0.02	33±2
原位交联胶原蛋白纤维	1.44±0.03	42±3