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本发明公开了一种PLA全降解塑料及其生产方法,由秸秆淀粉、乳酸、聚氯乙烯、PVA、增塑剂、润滑剂、脱氧剂、有机颜料和水按质量比组成,将秸秆淀粉用淀粉酶水解成葡萄糖,对葡萄糖进行发酵后加入NaOH溶液反应生成乳酸,酯化脱水生成L乳酸混合物,高温裂解生成丙交酯,加入PVA和聚氯乙烯,在真空装置中浓缩成为聚乳酸;将聚乳酸放入螺旋式高速混料机内,加入增塑
The invention discloses a PLA degradable plastic and a production method thereof. The PLA comprises starch, lactic acid, polyvinyl chloride, PVA, plasticizer, lubricant, deoxidizer, organic pigment and water in mass ratio, Amylase is hydrolyzed into glucose, after the glucose is fermented, NaOH solution is added to react to form lactic acid, esterified and dehydrated to form L-lactic acid mixture, pyrolysis is carried out to generate lactide, PVA and polyvinyl chloride are added, and concentrated into polylactic acid in a vacuum device; Polylactic acid into the spiral high-speed mixer, add plastic