27427
SAXS measurements indicate that although the NPHOS - PEO / SDS system does not form the core - shell particles with the NPHOS / SDS core and the PEO shell as other PE - S of double hydrophilic polyelectrolytes , the aggregates contain domains of closely packed surfactant micelles which bind to both NPHOS polyelectrolyte blocks and PEO blocks .
 Chemical: NPHOS - PEO; Chemical: SDS; Chemical: NPHOS; Chemical: SDS; Chemical: PEO; Chemical: NPHOS; Chemical: 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: NPHOS - PEO; Chemical: SDS; Chemical: NPHOS; Chemical: SDS; Chemical: PEO; Chemical: NPHOS; Chemical: PEO