18844
Cellulose microspheres bearing poly ( epsilon - caprolactone ) grafts of different molecular weights were investigated to evaluate the effect of graft length on the interfacial properties .
 Chemical: poly ( epsilon - caprolactone )
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 ( epsilon - caprolactone )