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Surface modification of natural rubber latex films by graft copolymerization

Surface modification of natural rubber (NR) latex films by argon plasma treatment, as well as by UV-induced graft copolymerization of the plasma-pretreated films with either acrylamide (AAm) or 2,2,3,3,4,4,4-heptafluorobutyl acrylate (HFA), have been carried out to impart new surface properties, suc...

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Main Authors: Wang, Peng, Tan, Kuang Lee, Ho, Chee Cheong, Khew, Mei Ching, Kang, E.T.
Format: Article
Published: Elsevier 2000
Subjects:
Q Science (General)
QD Chemistry
Online Access:http://eprints.um.edu.my/25860/
https://doi.org/10.1016/S0014-3057(99)00193-7
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spelling my.um.eprints.258602021-04-12T02:31:16Z http://eprints.um.edu.my/25860/ Surface modification of natural rubber latex films by graft copolymerization Wang, Peng Tan, Kuang Lee Ho, Chee Cheong Khew, Mei Ching Kang, E.T. Q Science (General) QD Chemistry Surface modification of natural rubber (NR) latex films by argon plasma treatment, as well as by UV-induced graft copolymerization of the plasma-pretreated films with either acrylamide (AAm) or 2,2,3,3,4,4,4-heptafluorobutyl acrylate (HFA), have been carried out to impart new surface properties, such as hydrophilicity or hydrophobicity, on NR latex films. X-ray photoelectron spectroscopy was used to investigate the chemical composition of the modified film surfaces. The peroxide functionalities resulting from surface reaction with air after the Ar plasma treatment greatly facilitated the subsequent UV-induced graft copolymerization. In general, higher monomer concentration, longer UV graft copolymerization time, and longer plasma pretreatment time led to higher graft yield. Contact angle measurements revealed that the hydrophilicity of the NR film surface was considerably enhanced by the plasma treatment and the subsequent graft copolymerization with AAm. On the other hand, water contact angle as large as 109° was achieved for rubber surface graft-copolymerized with HFA. Atomic force microscopic images indicated that surface modification by graft copolymerization had also resulted in a substantial reduction in the surface roughness of the NR latex films. Elsevier 2000 Article PeerReviewed Wang, Peng and Tan, Kuang Lee and Ho, Chee Cheong and Khew, Mei Ching and Kang, E.T. (2000) Surface modification of natural rubber latex films by graft copolymerization. European Polymer Journal, 36 (7). pp. 1323-1331. ISSN 0014-3057 https://doi.org/10.1016/S0014-3057(99)00193-7 doi:10.1016/S0014-3057(99)00193-7
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QD Chemistry
spellingShingle Q Science (General)
QD Chemistry
Wang, Peng
Tan, Kuang Lee
Ho, Chee Cheong
Khew, Mei Ching
Kang, E.T.
Surface modification of natural rubber latex films by graft copolymerization
description Surface modification of natural rubber (NR) latex films by argon plasma treatment, as well as by UV-induced graft copolymerization of the plasma-pretreated films with either acrylamide (AAm) or 2,2,3,3,4,4,4-heptafluorobutyl acrylate (HFA), have been carried out to impart new surface properties, such as hydrophilicity or hydrophobicity, on NR latex films. X-ray photoelectron spectroscopy was used to investigate the chemical composition of the modified film surfaces. The peroxide functionalities resulting from surface reaction with air after the Ar plasma treatment greatly facilitated the subsequent UV-induced graft copolymerization. In general, higher monomer concentration, longer UV graft copolymerization time, and longer plasma pretreatment time led to higher graft yield. Contact angle measurements revealed that the hydrophilicity of the NR film surface was considerably enhanced by the plasma treatment and the subsequent graft copolymerization with AAm. On the other hand, water contact angle as large as 109° was achieved for rubber surface graft-copolymerized with HFA. Atomic force microscopic images indicated that surface modification by graft copolymerization had also resulted in a substantial reduction in the surface roughness of the NR latex films.
format Article
author Wang, Peng
Tan, Kuang Lee
Ho, Chee Cheong
Khew, Mei Ching
Kang, E.T.
author_facet Wang, Peng
Tan, Kuang Lee
Ho, Chee Cheong
Khew, Mei Ching
Kang, E.T.
author_sort Wang, Peng
title Surface modification of natural rubber latex films by graft copolymerization
title_short Surface modification of natural rubber latex films by graft copolymerization
title_full Surface modification of natural rubber latex films by graft copolymerization
title_fullStr Surface modification of natural rubber latex films by graft copolymerization
title_full_unstemmed Surface modification of natural rubber latex films by graft copolymerization
title_sort surface modification of natural rubber latex films by graft copolymerization
publisher Elsevier
publishDate 2000
url http://eprints.um.edu.my/25860/
https://doi.org/10.1016/S0014-3057(99)00193-7
_version_ 1696976592512745472
score 13.211869

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