羧甲基纤维素钠改性角蛋白膜的结构与性能

doi:10.13475/j.fzxb.20180701006

纺织学报 ›› 2019, Vol. 40 ›› Issue (06): 14-19.doi: 10.13475/j.fzxb.20180701006

羧甲基纤维素钠改性角蛋白膜的结构与性能

刘淑萍¹^,²^,³(), 李亮²^,³^,⁴, 刘让同¹^,²^,³, 崔世忠²^,³^,⁴, 王艳婷²^,³^,⁴

1.中原工学院服装学院, 河南郑州 450007
2.纺织服装产业河南省协同创新中心,河南郑州 450007
3.河南省功能性纺织材料重点实验室, 河南郑州 450007
4.中原工学院纺织学院, 河南郑州 450007

收稿日期:2018-07-04 修回日期:2019-03-09 出版日期:2019-06-15 发布日期:2019-06-25
作者简介:刘淑萍(1978—),女,讲师,博士。主要研究方向为纺织新材料、高分子材料的研究与开发。E-mail: lsp667@sina.com。
基金资助:
国家重点研发计划项目(2017YFB0309100)

Structure and properties of keratin film modified by carboxymethyl cellulose sodium

LIU Shuping¹^,²^,³(), LI Liang²^,³^,⁴, LIU Rangtong¹^,²^,³, CUI Shizhong²^,³^,⁴, WANG Yanting²^,³^,⁴

1. The School of Fashion Technology, Zhongyuan University of Technology, Zhengzhou, Henan 450007, China
2. Henan Provincial Collaborative Innovation Center of Textile and Clothing, Zhengzhou, Henan 450007, China
3. Henan Provincial Key Laboratory of Functional Textile Materials, Zhengzhou, Henan 450007, China
4. The School of Textiles, Zhongyuan University of Technology, Zhengzhou, Henan 450007, China

Received:2018-07-04 Revised:2019-03-09 Online:2019-06-15 Published:2019-06-25

摘要/Abstract

摘要：

为改善羊毛角蛋白的成膜性能,以羧甲基纤维素钠(CMCNa)为改性剂,将其与羊毛角蛋白进行共混制备改性羊毛角蛋白膜。借助激光显微镜、红外光谱仪、X射线衍射仪以及热性能分析仪等对羧甲基纤维素钠改性膜的结构与性能进行表征。结果表明:经CMCNa改性的羊毛角蛋白膜,其结构更加致密,热稳定性和疏水性增强,伸长率由未改性前的1.8%增加至6.4%;改性羊毛角蛋白膜在水中的降解性由原来的20.4%增加至78.6%,但其强度由原来的35 MPa降低至16.3 MPa;CMCNa与羊毛角蛋白在共混过程中由于氢键的相互作用,降低了角蛋白的分子内氢键作用力,同时CMCNa的加入使羊毛角蛋白膜的结晶结构由原来的α-螺旋结晶结构转变为α-螺旋和 β-折叠共存的结晶结构。

关键词: 羊毛角蛋白膜, 羧甲基纤维素钠, 改性膜, 结晶结构, 力学性能

Abstract:

In order to improve film-forming properties of keratin, carboxymethyl cellulose sodium (CMCNa) was used as the modifier and blended with wool keratin to prepare a wool keratin film. The performances of the modified film were characterized by laser microscopy, infrared spectroscopy, X-ray diffraction, thermal properties, etc. The results indicate that the addition of CMCNa makes the structure of keratin membrane much denser, and improves its thermal stability and hydrophobicity. Moreover, its elongation increases from 1.8% to 6.4%, and its degradation in water also increases from 20.4% to 78.6%. However, its strengthen decreases from 35 MPa to 16.3 MPa. The reason is that inter-molecular hydrogen bond interaction between CMCNa and keratin occurs during the blending process, which reduces the intra-molecular hydrogen bonding of keratin. Further, with the addition of CMCNa, the crystal structure of modified membrane changes from the alpha-helical structure of wool keratin to the structure of both alpha-helical and beta-folded crystals.

Key words: wool keratin film, carboxymethyl cellulose sodium, modified film, crystalline structure, mechanical property

中图分类号:

TS102.3

刘淑萍, 李亮, 刘让同, 崔世忠, 王艳婷. 羧甲基纤维素钠改性角蛋白膜的结构与性能[J]. 纺织学报, 2019, 40(06): 14-19.

LIU Shuping, LI Liang, LIU Rangtong, CUI Shizhong, WANG Yanting. Structure and properties of keratin film modified by carboxymethyl cellulose sodium[J]. Journal of Textile Research, 2019, 40(06): 14-19.

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羧甲基纤维素钠改性角蛋白膜的结构与性能

Structure and properties of keratin film modified by carboxymethyl cellulose sodium

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