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Effects of Cellulose Nanofibril/Pullulanase System on the Performance of Starch Film
Received:March 22, 2024  
DOI：10.11980/j.issn.0254-508X.2024.09.001
Key Words:starch  pullulanase  cellulose nanofibril  starch film
Author NameAffiliationPostcode
WANG Cheng Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457
State Key Lab of Biobased Fiber Manufacturing Technology， Tianjin University of Science & Technology， Tianjin，300457 		300457
LIU Liqin Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457
State Key Lab of Biobased Fiber Manufacturing Technology， Tianjin University of Science & Technology， Tianjin，300457 		300457
LU Bin Zhejiang Jingxing Paper Co.， Ltd.， Jiaxing， Zhejiang Province， 314214 314214
CHENG Zhengbai Zhejiang Jingxing Paper Co.， Ltd.， Jiaxing， Zhejiang Province， 314214 314214
CAO Haibing Zhejiang Jingxing Paper Co.， Ltd.， Jiaxing， Zhejiang Province， 314214 314214
HUA Feiguo Zhejiang Jinjiahao Green Nanomaterial Co.， Ltd.， Quzhou， Zhejiang Province， 324400 324400
AN Xingye* Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457
State Key Lab of Biobased Fiber Manufacturing Technology， Tianjin University of Science & Technology， Tianjin，300457 		300457
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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 optical 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）.
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