14269
Indeed , the SFG results presented here indicated that the surface structures of these materials depend on several factors , such as the extent of quaternization , the molecular weight of the PDMS component , and the functional groups of the QAS used for incorporation into the PDMS matrix .
 Chemical: PDMS; 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: PDMS; Chemical: PDMS