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Indexed by:期刊论文

Date of Publication:2017-10-01

Journal:PLASMA PROCESSES AND POLYMERS

Included Journals:Scopus、SCIE、EI

Volume:14

Issue:10

ISSN No.:1612-8850

Key Words:hydrophilic coatings; hydrophobic coatings; pH-responsiveness; plasma copolymers; surface modification; tunable wettability

Abstract:Novel and intelligent plasma copolymers based on hydrophilic/hydrophobic monomers with tunable wettability and pH-responsiveness are demonstrated. A series of plasma copolymer coatings with various carboxylic acid and fluorocarbon group ratio are prepared on the low-density polyethylene (LDPE) surfaces via capacitively coupled radio frequency plasma (CCP). The static water contact angles (SWCA) of C4F8-co-AA plasma polymer coatings on nanotextured LDPE surfaces tuned from 163 to 4 degrees. These C4F8-co-AA plasma polymer coatings showed different pH-responsiveness by the combined effect of the carboxylic acid to fluorocarbon group ratios and surface nanotexture. The increase of carboxylic acid groups of C4F8-co-AA plasma polymers shifted the reversibly switchable wettability of pH-responsiveness towards low SWCA range. The magnifying effect of surface nanotexture on pH-responsiveness was also observed.