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However , the overwhelming majority of previously reported temperature - responsive polymers are based on poly ( N - isopropylacrylamide ) ( PNIPAM ) , despite the fact that a wide range of other thermoresponsive polymers have demonstrated similar promise for the preparation of adaptive materials .
 Chemical: poly ( N - isopropylacrylamide ); Chemical: PNIPAM
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: poly ( N - isopropylacrylamide ); Chemical: PNIPAM