Assertion: lignin | /r/MadeOf | various reactive moieties
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Source sentences:
text: Lignin is a good raw material for polymeric synthesis because it is renewable and abundant, has intrinsic biodegradability, is a by-product of the pulp industry, and contains various reactive moieties, e.g., free aliphatic and phenolic hydroxyl groups, which can be used in a wide range of chemical reactions.