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A facile approach to fabricate waterborne, nanosized polyaniline‐ graft ‐(sulfonated polyurethane) as environmental antistatic coating
Author(s) -
Wang Haihua,
Sun Liyu,
Fei Guiqiang,
Fan Jie,
Shi Xinyuan
Publication year - 2017
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.45412
Subject(s) - polyaniline , polyurethane , antistatic agent , materials science , aniline , coating , chemical engineering , conductive polymer , polymer , polymerization , hexamethylene diisocyanate , dispersion stability , polymer chemistry , dispersion (optics) , composite material , chemistry , organic chemistry , layer (electronics) , physics , optics , engineering
Waterborne polyurethane (WPU) has been intensively utilized as host materials for intrinsic conducting polymers. However, the stability and compatibility between polyaniline (PANI) and WPU remain a challenge for their composites. In this research, anionic–nonionic sulfonated waterborne polyurethane (SWPU) is adopted as matrix to prepare nanosized PANI‐ g ‐SWPU dispersions through chemical graft polymerization method, and the stability mechanism is systematically investigated. The PANI‐ g ‐SWPU dispersion is endowed with much higher stability and no PANI precipitation is detected after storage for 1 year when the PEG molecular weight is 1000 and R value is 1.2. The surface resistivity reaches the minimum when the graft time is 2.5 h, pH value is 2, n (APS)/ n (aniline) is 1, and the aniline content is 20 wt %. And the resistivity of the coated paper reaches 1.39 Ω cm, indicating that the as‐prepared PANI‐ g ‐SWPU dispersion can be directly used as the antistatic coatings, which is also suitable for large scalable production. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45412.