摘要
Abstract
[ Objective ] The study aimed to discuss the physical properties of graft copolymer of corn starch and methyl acrylate. [ Method ]The physical properties of the graft copolymer sheet of corn starch and methyl acrylate were determined through the grinding experiment, tensioning experiment, enzyme biodegraded experiment, water absorption experiment, and boiling water resisting experiment, etc. [ Result]When the front roll temperature was 90 - 95 ℃ and the after rolls temperature was 95 - 100 ℃, the sheet had better physical performance with the smooth and translucent surface, and also had good toughness and plasticity. When the sample was treated by a-amylase for 29 d, the graft copelymer was in the weightlessness dose to 49％, showing that the sheet had biodegradability. The quality and water absorption rate of the sample were first rose and then reduced, indicating that the sheet had water resistance. When the sample was boiled in boiling water for 5 min,the periphery of sheet showed curling without swelling. The sample determination on the tensioning strength showed that the sheet had good mechanics performance. [ Conclusion] The graft copolymer of corn starch and methyl acrylate showed the good physical properties with better plasticity and biodegradability, so it could be used as the material of biodegradable plastic.关键词
玉米淀粉/丙烯酸甲酯/接枝共聚物/物理性能Key words
Corn starch/ Methyl acrylate/ Graft copolymer/Physical properties分类
农业科技
