30235
Protein - resistant SS - PPEGMA and protein - adsorbing SS - PPFS surfaces were prepared by coupling of the respective azide - functionalized poly ( poly ( ethylene glycol ) methyl ether methacrylate ) ( azido - PPEGMA ) and poly ( 2 , 3 , 4 , 5 , 6 - pentafluorostyrene ) ( azido - PPFS ) polymer brushes in azide - alkyne ' click ' reaction .
 Chemical: PPEGMA; Chemical: PPFS; Chemical: azide; Chemical: poly ( poly ( ethylene glycol ) methyl ether methacrylate ); Chemical: azido - PPEGMA; Chemical: poly ( 2 , 3 , 4 , 5 , 6 - pentafluorostyrene ); Chemical: azido - PPFS; Chemical: azide; Chemical: alkyne
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: PPEGMA; Chemical: PPFS; Chemical: azide; Chemical: poly ( poly ( ethylene glycol ) methyl ether methacrylate ); Chemical: azido - PPEGMA; Chemical: poly ( 2 , 3 , 4 , 5 , 6 - pentafluorostyrene ); Chemical: azido - PPFS; Chemical: azide; Chemical: alkyne