Assertion: natural polymer | /r/HasProperty | i.e. carbohydrates
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Source sentences:
text: Current research focuses on using natural polymers (i.e. carbohydrates such as starch and cellulose, plant proteins and oils) to create biodegradable plastics to replace petroleum-sourced plastics, as well as designing functional biopolymers that are sensitive to their environment and release agrochemicals on demand in a controlled fashion.