Hydrophilic Modification of Thermoplastic Polyurethane Nonwoven
by Atmospheric Plasma Treatment and UV-induced graft
polymerization of N-isopropylacrylamide
Ko-Shao Chen1*, Hsin-Ming Wu 1, Yea-Ting Wu1, Shu-Chuan Liao1,Hong-Ru Lin2, N.
Inagaki3
1
Department of Materials Engineering, Tatung University, 40, Chungshan N. Rd., 3rd
Sec., Taipei, Taiwan.
2
Department of Chemical and Materials Engineering, Southern Taiwan University of
Technology, Tainan, Taiwan
3
Emeritus Professor of Shizuoka University.
Abstract
In this study, Atmospheric plasma treatment (APT) of TPU nonwoven was carried
out and subsequent photo-induced grafting polymerization N-isopropylacrylamide
(NIPAAm). The TPU nonwoven surface modified with helium (He) AP treatment and
characteristic by water-contact angle measurement, Fourier Transform Infrared
Spectroscopy (FTIR), and Scanning Electron Microscopy (SEM).
The untreated TPU nonwoven surface was highly hydrophobic (contact angle θH2O
= 95°); after the atmospheric helium plasma treatment of the TPU nonwoven
resulted in oxidation of the surface, a significant increase in hydrophilicity (contact
angleθH2O ≦ 10°). The PS surface was hydrophobic (contact angle θH2O = 78°);
after the atmospheric helium and nitrogen plasma treatment of the polyurethane
resulted in oxidation of the surface, a significant increase in hydrophilicity (contact
angleθH2O ≦ 10°).Atmospheric plasma treatment (APT) of TPU nonwoven was
carried
out
and
subsequent
photo-induced
grafting
polymerization
N-isopropylacrylamide (NIPAAm). The reversible response property of PNIPAAm
grafted TPU nonwoven when temperature change was observed by water contact
angle.
Keywords：Surface modification, Atmospheric plasma, UV graft polymerization