14265
The incorporation of biocide moieties , such as quaternary ammonium salts ( QAS ) , can impart additional antibiofouling properties to PDMS - based FR coating systems .
 Chemical: ammonium; Chemical: PDMS
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: ammonium; Chemical: PDMS