Nghiên cứu chế tạo vật liệu tự phân hủy trên cơ sở polylactic axit và tinh bột sắn Việt Nam
Nghiên cứu chế tạo vật liệu tự phân hủy trên cơ sở polylactic axit và tinh bột sắn Việt Nam
The technological conditions of obtaining the polylactic acid-Vietnamese cassava starch blend on the mix-brabender were investigated. The optimal conditions were: temperature 160o C, reaction time 6 minutes, screw speed 45 r/min., initial material ratio in weight percentage PLA80- PEG10-TB20. Polyethyleneglycol (PEG) as a plasticizer, PN-47 as a distribution agent was used. It showed that the optimal starch content was 20 wt%. Increase in starch content lead to increase in water absorbability an