Chem. J. Chinese Universities ›› 2015, Vol. 36 ›› Issue (12): 2590.doi: 10.7503/cjcu20150498

• Polymer Chemistry • Previous Articles     Next Articles

Immobilization of Papain with Ionic Liquids-regenerated Cellulose Membrane for Wool Fabric Modification

LI Qiujin*(), ZHAO Zhiqi, YUAN Yamei, GONG Jixian, ZHANG Jianfei   

  1. School of Textiles, Tianjin Polytechnic University, Key Laboratory of Advanced Textile Composites, Ministry of Education, Tianjin Polytechnic Univeristy, Tianjin 300387, China
  • Received:2015-06-29 Online:2015-12-10 Published:2015-11-17
  • Contact: LI Qiujin E-mail:maldini@mail.nankai.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21006072) and the Natural Science Foundation of Tianjin, China(Nos.11JCYBJC04400, 15JCYBJC18000)

Abstract:

Ionic liquid(IL) 1-butyl-3-methylimidazolium chloride([Bmim]Cl) was used to dissolve microcrystalline cellulose Avicel to make IL-regenerated cellulose membrane for papain immobilization through silane modification method. It demonstrated that the immobilized papain could be obtained at the condition of 6.5%(mass fraction) Avicel/[BMIM]Cl for membrane as the solid support; 30% NH2(CH2)3Si(OC2H5)3 at 50 ℃ to functionalize the carrier; adsorbing for 3 h followed by cross-linking for 4 h at 50 ℃, pH=7.0 and enzyme concentration of 300 mg/mL, using 10%(volume fraction) glutaraldehyde as the cross-linker. After immobilization, papain was immobilized to the both sides of the regenerated cellulose membrane surfaces with high loading density. The immobilized papain could be limited on the wool fiber surface, only digesting the scale structure instead of native papain penetrating inside the fiber and generating the significant weight and strengthen loss.

Key words: Papain, Immobilization, Ionic liquid, Cellulose, Scale of wool

CLC Number: 

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