纤维素纳米纤丝/普鲁兰酶体系对淀粉膜性能的影响研究

Effects of Cellulose Nanofibril/Pullulanase System on the Performance of Starch Film

王成 ¹刘利琴 ¹鲁宾 ²程正柏 ²曹海兵 ²华飞果 ³安兴业¹

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作者信息

1. 天津科技大学天津市制浆造纸重点实验室,天津,300457;天津科技大学生物源纤维制造技术国家重点实验室,天津,300457
2. 浙江景兴纸业股份有限公司,浙江嘉兴,314214
3. 浙江金加浩绿色纳米材料股份有限公司,浙江衢州,324400
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摘要

本研究分析了纤维素纳米纤丝(CNF)/普鲁兰酶(Pul)体系对淀粉膜性能的影响.结果表明,CNF/Pul体系处理后的淀粉具有更高的短程有序性及更多的双螺旋结构,且淀粉晶型中出现了B型特征峰.CNF/Pul体系处理后得到的淀粉膜具有良好的表面均匀性和机械性能,该膜的拉伸强度从2.44 MPa(Nature-StF)增至7.32 MPa(CNF/Pul-StF),增加了 2倍.光/水蒸气透过率测试结果表明,CNF/Pul体系处理后的淀粉膜具有更好的光学透过性,且对水蒸气阻隔性能有一定的增强作用.CNF/Pul体系处理后淀粉膜的光学透过率从49.3％～51.2％(Nature-StF)增至56.1％～60.1％(CNF/Pul-StF),且水蒸气透过系数从 9.26×10-12 g·cm/(Pa·s·cm2)(Nature-StF)减至 6.33×10-12g·cm/(Pa·s·cm2)(CNF/Pul-StF).

Abstract

This study analyzed the effect of cellulose nanofibril(CNF)/pullulanase(Pul)system on the performance of starch film.The results showed that the CNF/Pul treated starch exhibited higher short-range orderliness and more double helix structure,and there were additional B-type typical peaks existing in the treated starch.The obtained starch film with CNF/Pul treatment had good surface uniformity and better strength property.The tensile strength of starch film was increased from 2.44 MPa(Nature-StF)to 7.32 MPa(CNF/Pul-StF),with a 200％increase.The results of the light/water vapor transmittance test indicate that the starch film treated with the CNF/Pul system had better opti-cal transmittance and a certain enhancement effect on the water vapor barrier performance.The optical transmittance of starch film treated with CNF/Pul system increased from 49.3％～51.2％(Nature-StF)to 56.1％～60.1％(CNF/Pul-StF),and water vapor transmission index,decreased from 9.26×10-12 g·cm/(Pa·s·cm2)(Nature-StF)to 6.33×10-12 g·cm/(Pa·s·cm2)(CNF/Pul-StF).

关键词

淀粉/普鲁兰酶/纤维素纳米纤丝/淀粉膜

Key words

starch/pullulanase/cellulose nanofibril/starch film

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出版年

2024

中国造纸

中国造纸学会中国制浆造纸研究院

中国造纸

北大核心

影响因子：0.525

ISSN：0254-508X

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