玉米纳米淀粉/纤维素纳米晶复合膜制备工艺优化  

Optimization on preparation process of composite film with corn nano-starch/cellulose nanocrystalline

作　　者：陈启杰[1,2] 周丽玲[1] 邹佳祁 陈聪 王建辉[1] CHEN Qi-jie;ZHOU Li-ling;ZOU Jia-qi;CHEN Cong;WANG Jian-hui(School of Chemistry and Biological Engineering,Changsha University of Science and Technology,Changsha,Hunan 410076,China;State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangdong,Guangzhou 510640,China)

机构地区：[1]长沙理工大学化学与生物工程学院,湖南长沙410076 [2]华南理工大学制浆造纸工程国家重点实验室,广东广州510640

出　　处：《食品与机械》2018年第5期113-117,共5页Food and Machinery

基　　金：国家自然科学基金(编号:31500495);制浆造纸工程国家重点实验室开放基金(编号:201825)

摘　　要：以玉米纳米淀粉为基质,甘油为增塑剂、纤维素纳米晶(CNC)为增强剂采用流延成膜法制备玉米纳米淀粉/CNC复合膜,成膜基质和干燥温度对纳米淀粉成膜影响较大,聚氯乙烯基质板对纳米淀粉成膜较好,干燥温度25℃,成膜平整光滑;单因素探讨了玉米纳米淀粉、甘油和CNC含量对纳米淀粉/CNC复合膜强度性能的影响,在该基础上进行三因素三水平正交试验,正交优化研究表明,对玉米纳米淀粉/CNC复合膜的抗张强度影响为:CNC>甘油>玉米纳米淀粉,正交试验优化结果为CNC 2%,甘油8%,玉米纳米淀粉10%,制备的玉米纳米淀粉/CNC复合膜抗张强度达20.18 MPa;FTIR分析表明玉米纳米淀粉、甘油、CNC混合均匀,形成了均一稳定的纳米淀粉/CNC复合膜。该玉米纳米淀粉/CNC复合膜在食品药品可食性包装领域具有较好的应用前景。The corn nano-starch/cellulose nanocrystalline（CNC）composite film was prepared by casting method with corn nanostarch as substrate,glycerol as plasticizer and CNC as reinforcing agent.Film forming substrate and drying temperature have influences on film formation of nano-starch,and PVC matrix plate is better.When drying temperature is 25 ℃,the film forming is smooth and good.The effects of corn nano-starch,glycerol and CNC content on the strength properties of nano-starch/CNC composite film were investigated by single factor,and three factors and three levels orthogonal test were also carried out.Orthogonal optimization study showed that the tensile strength of composite film was：CNC 〉glycerol〉corn nano-starch.The optimum results of orthogonal experiment were as followed：CNC 2%,glycerol 8% and corn nanostarch 10%,and the tensile strength of composite film can be reached 20.18 MPa.FTIR analysis also showed that corn nanostarch,glycerol,CNC were mixed evenly,and a homogeneous and stable nano-starch/CNC composite film was formed.The corn nanostarch/CNC composite film has a good application prospect in the field of edible packaging of food and drugs.

关 键 词：玉米纳米淀粉 纤维素纳米晶 复合膜 工艺优化 

分 类 号：TS206.4[轻工技术与工程—食品科学]