纺织学报 ›› 2019, Vol. 40 ›› Issue (07): 24-30.doi: 10.13475/j.fzxb.20180607107

• 纤维材料 • 上一篇    下一篇

家蚕丝素蛋白阳离子化及其对羊毛性状的影响

包红1,2, 徐水1,2, 张小宁1,2, 成国涛1,2, 朱勇1,2()   

  1. 1. 西南大学 家蚕基因组生物学国家重点实验室, 重庆 400715
    2. 西南大学 生物技术学院, 重庆 400715
  • 收稿日期:2018-06-25 修回日期:2019-03-30 出版日期:2019-07-15 发布日期:2019-07-25
  • 通讯作者: 朱勇
  • 作者简介:包红(1991-),女,硕士生。主要研究方向为纤维材料。

Cationization of Bombyx mori silk fibroin and effect there of on wool traits

BAO Hong1,2, XU Shui1,2, ZHANG Xiaoning1,2, CHENG Guotao1,2, ZHU Yong1,2()   

  1. 1. State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
    2. College of Biotechnology, Southwest University, Chongqing 400715, China
  • Received:2018-06-25 Revised:2019-03-30 Online:2019-07-15 Published:2019-07-25
  • Contact: ZHU Yong

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摘要：

为提高羊毛织物的穿着舒适性,以碳化二亚胺(EDC)为激活剂激活家蚕丝素蛋白侧链上的羧基,使其与精胺反应得到阳离子化丝素蛋白,并将其整理到羊毛上,借助扫描电子显微镜、X射线衍射仪、傅里叶红外光谱仪、差示扫描热量仪对整理后的羊毛进行分析与表征。结果表明:整理后的丝素蛋白Zeta电位由-3.58 mV上升到5.41 mV;改性羊毛鳞片层表面被丝素蛋白膜包裹,其表面形成了更多的氢键和酰胺键,晶体结构更稳定,耐热分解性能提高,但力学性能下降;不同改性程度的家蚕丝素蛋白对羊毛结构的影响无明显差异,改性处理使羊毛酸性染料上染率下降。

关键词: 家蚕丝素蛋白, 精胺, 羊毛改性, 结晶性能

Abstract:

In order to improve the wearing comfort of wool fabrics, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) was used as an activator to activate carboxyl group on the silk fibroin side chain to react with spermine. The cationized silk fibroin was then arranged on the finished wool fiber. The finished wool was characterized by scanning electron microscopy, X-ray diffraction, Fourier infrared spectroscopy and differential scanning calorimetry analysis. The results show that Zeta potential of silk fibroin rises from -3.58 mV to 5.41 mV, and the modified wool fiber scale layer is coated by a silk fibroin film. The wool fiber possesses more hydrogen bonds and amide bonds, and the crystal structure of wool fiber is more stable. The heat-resistant decomposition performance of the cationized silk fibroin treated wool fibers is improved, but the mechanical properties are decreased. However, no significant difference exists in wool fiber structure with different silk fibroin solution modification. Wool fibers have a reduced dye uptake ratio for acid dyes.

Key words: Bombyx mori silk fibroin, spermine, wool modification, crystallization property

中图分类号: 

  • Q518.4

图1

不同精胺质量分数改性家蚕丝素蛋白溶液的Zeta电位"

表1

不同精胺质量分数丝改性素蛋白溶液中氨基酸含量"

氨基酸名称 精胺质量分数/%
0.0 0.1 2.0 5.0 10.0
丝氨酸 14.9 14.6 14.2 14.8 14.6
苏氨酸 1.2 1.2 1.2 1.2 1.3
甘氨酸 30.0 35.5 32.8 33.9 32.0
丙氨酸 29.5 28.7 31.9 30.6 32.5
缬氨酸 2.8 2.6 2.6 2.6 2.4
亮氨酸 0.6 0.7 0.6 0.7 0.6
酪氨酸 12.2 9.8 9.9 9.5 9.7
赖氨酸 0.5 0.6 0.5 0.6 0.5
组氨酸 0.4 0.5 0.5 0.5 0.4
精氨酸 0.5 0.5 0.5 0.5 0.5
天冬氨酸 2.2 2.6 2.2 2.6 2.1
异亮氨酸 0.7 0.8 0.8 0.8 0.7
苯丙氨酸 1.3 1.3 1.3 1.3 1.3

图2

改性家蚕丝素蛋白溶液的红外光谱图"

图3

原羊毛、阳离子化丝素蛋白整理后羊毛的SEM照片"

图4

不同精胺质量分数家蚕丝素蛋白改性羊毛的XRD图谱"

图5

不同精胺质量分数家蚕丝素蛋白改性羊毛的红外光谱图"

图6

不同精胺质量分数家蚕丝素蛋白改性羊毛的DSC曲线"

表2

不同精胺质量分数家蚕丝素蛋白改性羊毛纤维的力学性能"

精胺质量分数/% 断裂强力/cN 断裂伸长率/%
0.1 5.2 53.7
2.0 5.1 39.1
5.0 5.1 47.1
10.0 3.8 56.3
0.0 3.4 36.0
原羊毛 5.3 61.2

图7

原羊毛、纯丝素蛋白整理羊毛、阳离子化丝素蛋白整理羊毛染色后的扫描电镜照片"

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