Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (06): 14-19.doi: 10.13475/j.fzxb.20180701006

• Fiber Materials • Previous Articles     Next Articles

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. 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

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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

CLC Number: 

  • TS102.3

Fig.1

Modified mechanism of wool keratin film by carboxymethyl cellulose sodium"

Fig.2

Surface morphologies of keratin film (a) and CMCNa modified film (b)(×1 000)"

Fig.3

Infrared spectra of keratin film, CMCNa film and modified film"

Fig.4

XRD crystal structure of keratin film, CMCNa film and modified film"

Fig.5

Thermo-gravimetric curves of keratin film (a) and CMCNa modified film (b) at different temperatures"

Fig.6

Change curves of contact angle of keratin film and CMCNa modified film at different time"

Fig.7

Tensile curves of keratin film and CMCNa modified film"

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