9261
The dissolution speed of the polymer films was found to be dependent on the concentration of polymer solution , where at least 65 % of the films were shown to dissolve into nanometer sized polymer fragments within 2min .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None