24298
The effective partition coefficient keff ( = CS / C0 ) was investigated for pure polystyrene and polystyrene dyed with fluorescent particles by changing the ratio of particle diameters dimp / dcryst and growth rate V .
 Chemical: polystyrene; Chemical: polystyrene
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: polystyrene; Chemical: polystyrene