基于WB600-KerT酶脱毛系统的羊皮纸性能研究

doi:10.19677/j.issn.1004-7964.2024.03.011

Leather Science and Engineering ›› 2024, Vol. 34 ›› Issue (3): 73-79.doi: 10.19677/j.issn.1004-7964.2024.03.011

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Property of Parchment Paper based on the WB600-KerT Enzyme Unhairing

ZHANG Yizhi¹, LI Shenglong¹, WANG Xinde¹, CAO Shan^1,*, WANG Yang^2,*

1. School of Light Industry Science and Engineering,Qilu University of Technology（Shandong Academy of Sciences）,Jinan 250353,China;
2. College of Chemistry, Chemical Engineering and Materials Science, Intelligent Manufacturing of Functional Chemicals Engineering Research Center of the Ministry of Education, Shandong Normal University,Jinan 250014, China

Received:2023-11-30 Revised:2024-01-24 Accepted:2024-01-26 Published:2024-06-01 Online:2024-04-25

Abstract

Abstract: In the production of parchment paper, unhairing is indispensable. The traditional unhairing with sulfides causes severe pollution. Herein, enzymatic dehairing was used in the production of parchment paper. The research result showed that the unhairing with WB600-KerT enzyme was safe and caused excellent fiber dispersion. The tensile strength and tear strength of enzyme-dehairing parchment were higher than that of sodium sulfide dehairing parchment, and significantly higher than that of cardboard, coated paper and other paper types. Afterwards, enzymatic unhairing parchment exhibited remarkable resistance to light aging. The color change value of enzyme-dehairing parchment paper was significantly lower than that of sulfide-dehairing parchment, cardboard and coated paper. This can be attributed to the fact that, during the UV light continuous radiation, amide bond of enzyme-dehairing parchment paper undergoes a large number of breaks, so that it has a better aging resistance. Additionally, the higher fiber dispersion of the enzymatic unhairing parchment has positive influence on permeability of ink molecules. This results in better paper flatness, smoother writing experience, and improved handwriting clarity compared to sulfide-unhairing parchment.

Key words: parchment, protease, unhairing, aging, clean production

CLC Number:

ZHANG Yizhi, LI Shenglong, WANG Xinde, CAO Shan, WANG Yang. Property of Parchment Paper based on the WB600-KerT Enzyme Unhairing[J]. Leather Science and Engineering, 2024, 34(3): 73-79.

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Property of Parchment Paper based on the WB600-KerT Enzyme Unhairing

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