However, the contact angle of the PVA/ATT composite materials showed a trend of first increasing and then decreasing after the addition of the ATT.
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Characterization and Morphology of Nanocomposite Hydrogels with a 3D Network Structure Prepared Using Attapulgite-Enhanced Polyvinyl Alcohol.
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The sentences
Subsequently, as the content of the ATT increased, the water contact angle showed a decreasing trend.