Biodegradable Plastics - Developments and Environmental Impacts

摘要

Starch is a linear polymer (polysaccaride) made up of repeating glucose groups linked by glucosidic linkages in the 1-4 carbon positions.The length of the starch chains will vary with plant source but in general the average length is between 500 and 2 000 glucose units.There are two major molecules in starch - amylose and amylopectin.The alpha linkage of amylose starch allows it to be flexible and digestible.