Effects of Cellulose Nanofibril/Pullulanase System on the Performance of Starch Film
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).
万方数据
维普
