19239
Encapsulation efficiency ( 32 - 63 % ) was impacted by evaporation rate and PLGA / PEO - PPO - PEO ratio .
 Chemical: PLGA; Chemical: PEO - PPO - PEO
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: PLGA; Chemical: PEO - PPO - PEO