Radiation modification of starch-based plastic sheets

doi:10.1016/S0144-8617(02)00292-8

CORC > 北京大学 > 化学与分子工程学院

	Radiation modification of starch-based plastic sheets
	Zhai, ML ; Yoshii, F ; Kume, T
刊名	碳水化合物聚合物
	2003
关键词	starch-based plastic sheets irradiation tensile strength physical gel state water absorption FOOD-PACKAGING APPLICATIONS DENSITY POLYETHYLENE LDPE WHEAT-STARCH THERMOPLASTIC STARCH BIODEGRADABLE FILMS BEHAVIOR WATER DEFORMATION HYDROGELS
DOI	10.1016/S0144-8617(02)00292-8
英文摘要	Transparent starch-based plastic sheets were prepared by irradiation of compression-molded starch-based mixture in physical gel state with electron beam (EB) at room temperature. The influence of radiation, plasticizers, water and poly vinyl alcohol (PVA) on the properties of the sheets was investigated. After irradiation, the ductility and tensile strength of the sheets was improved due to the chemical reactions, which was demonstrated by determination of gel fraction and DSC profiles, between starch macromolecules under the action of ionizing radiation. Glycerol, ethylene glycol (EG), poly ethylene glycol (PEG, 600, 1000) was selected as plasticizer to add into starch sheets. The results showed that glycerol was an excellent plasticizer of starch so that the ductility of starch sheets was improved obviously (elongation at break increased). The presence of water was necessary for the preparation of the sheets in this work. With the increasing of the content of starch in starch-based mixture, the tensile strength of the sheets decreased due to the decrease of the degree of the crosslinking of starch. Furthermore, PVA, a biodegradable and flexible-chain polymer, was incorporated into starch-based sheets, the properties of the sheets such as the flexibility (elongation at break) and wet strength was improved obviously. (C) 2003 Elsevier Science Ltd. All rights reserved.; Chemistry, Applied; Chemistry, Organic; Polymer Science; SCI(E); EI; 67; ARTICLE; 3; 311-317; 52
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/255907]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zhai, ML,Yoshii, F,Kume, T. Radiation modification of starch-based plastic sheets[J]. 碳水化合物聚合物,2003.
APA	Zhai, ML,Yoshii, F,&Kume, T.(2003).Radiation modification of starch-based plastic sheets.碳水化合物聚合物.
MLA	Zhai, ML,et al."Radiation modification of starch-based plastic sheets".碳水化合物聚合物 (2003).