陕西科技大学学报（自然科学版）Issue(4)：18-22,5.
纳米晶体纤维素对淀粉基复合薄膜性能的影响
Effect of nanocrystal cellulose on the properties of starch-based film
摘要
Abstract
Taking Bleached Hardwood Fiber (BHF) as raw material ,nano‐crystals cellulose (NCC) was prepared using the method of acid hydrolysis by concentrated sulfuric acid .By measuring the diameter and Zeta potential of the NCC ,the properties of NCC were meas‐ured .Starch/NCC composite film was prepared using the method of tape casting .By measur‐ing the changes of crystal properties ,mechanical properties ,thermal properties and function‐ality of the composite film ,the effect of the NCC on film properties was studied .The results showed that the solution of NCC prepared by concentrated sulfuric acid hydrolysis was colloi‐dal solution .The Zeta potential of the solution was -33 .7 mV ,and the average particle size was 202 .6 nm .With the increasing proportion of NCC ,the crystallinity of the composite film increased ,thermal stability and light transmittance declined ,tensile strength of the composite film first increased and then decreased .When the NCC added 8% ,the tensile strength in‐creased to a maximum of 3 .69 MPa ,increased by 46 .43% compared with the pure starch films .NCC could give the film better water resistance and vapor barrier capability .When the NCC added 10% ,the ratio of moisture absorption dropped to 60 .34% and the water vapor transmission dropped to 236 .78 g/24 h · m2 ,decreased by 11 .93% and 28 .71% compared with the pure starch films respectively .关键词
NCC/淀粉/复合薄膜/拉伸强度/吸湿率Key words
NCC/starch/composite film/tensile strength/moisture absorption分类
化学化工引用本文复制引用
杜敏,姜桥,李新平,张丹..纳米晶体纤维素对淀粉基复合薄膜性能的影响[J].陕西科技大学学报（自然科学版）,2015,(4):18-22,5.基金项目
陕西省科技厅自然科学基础研究计划项目（2015JM3083）；国家级大学生创新创业训练计划项目 （）
