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Synthesis of poly( N ‐isopropylacrylamide) under atmospheric pressure plasma conditions
Author(s) -
Spridon Delia,
Curecheriu Lavinia,
Dobromir Marius,
Dumitrascu Nicoleta
Publication year - 2011
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.35280
Subject(s) - contact angle , x ray photoelectron spectroscopy , materials science , polymer , poly(n isopropylacrylamide) , dielectric barrier discharge , fourier transform infrared spectroscopy , polymerization , plasma polymerization , dielectric spectroscopy , analytical chemistry (journal) , thin film , atmospheric pressure , dielectric , plasma , wetting , polymer chemistry , chemical engineering , composite material , nanotechnology , chemistry , optoelectronics , electrode , organic chemistry , copolymer , oceanography , geology , quantum mechanics , physics , engineering , electrochemistry
This work is focused on obtaining and characterizing thin films of a certain thermosensitive polymer, i.e., poly( N ‐isopropylacrylamide). To obtain such polymers dielectric barrier discharge plasma working at atmospheric pressure in plan–plan geometry was used. The plasma parameters were monitored during polymerization reaction by its electrical and optical signals. The obtained films were analyzed by different techniques such as X‐photoelectron spectroscopy, Fourier transform infrared spectroscopy, atomic force microscopy, contact angle, impedance spectroscopy measurements, and light interferometry for thickness measurements. Chemical analyses of obtained films showed that they sort well with the polymers obtained by other methods in literature. It has been proved that plasma polymerized films have a superhydrophilic character at room temperature, the measured contact angle being around 13°, the lower critical solution temperature was also identified at about 30–31°C. The films' thickness for a 10‐min duration deposition was 400 nm. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012