4653
Under an artificial marine environment with high ion - strength , the prepared polyelectrolytes / AuNPs hybrid film becomes rougher and possesses a higher water ratio , which in turn endows the film with superoleophobicity and low underwater oil adhesion .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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