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

作　　者：王成[1,4] 刘利琴[1,4] 鲁宾 程正柏 曹海兵 华飞果 安兴业[1,4] WANG Cheng;LIU Liqin;LU Bin;CHENG Zhengbai;CAO Haibing;HUA Feiguo;AN Xingye(Tianjin Key Lab of Pulp and Paper,Tianjin University of Science&Technology,Tianjin,300457;Zhejiang Jingxing Paper Co.,Ltd.,Jiaxing,Zhejiang Province,314214;Zhejiang Jinjiahao Green Nanomaterial Co.,Ltd.,Quzhou,Zhejiang Province,324400;State Key Lab of Biobased Fiber Manufacturing Technology,Tianjin University of Science&Technology,Tianjin,300457)

机构地区：[1]天津科技大学天津市制浆造纸重点实验室,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 [4]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

出　　处：《中国造纸》2024年第9期1-6,37,共7页China Pulp & Paper

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·cm^(2))(Nature-StF)减至6.33×10^(−12)g·cm/(Pa·s·cm^(2))(CNF/Pul-StF)。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 Btype 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·cm^(2))(Nature-StF)to 6.33×10^(−12)g·cm/(Pa·s·cm^(2))(CNF/Pul-StF).

关 键 词：淀粉 普鲁兰酶 纤维素纳米纤丝 淀粉膜 

分 类 号：TS727[轻工技术与工程—制浆造纸工程]