Browse > Article
http://dx.doi.org/10.5764/TCF.2009.21.4.033

UV-induced Crosslinking of Poly(vinyl acetate) Films Containing Benzophenone  

Sim, Young-Jae (Dept. of Nano-Bio Textile Engineering, Kumoh National Institute of Technology)
Seo, Eun-Kyo (Dept. of Nano-Bio Textile Engineering, Kumoh National Institute of Technology)
Choi, Gyong-Jun (Dept. of Nano-Bio Textile Engineering, Kumoh National Institute of Technology)
Yoon, Sung-Jong (Dept. of Nano-Bio Textile Engineering, Kumoh National Institute of Technology)
Jang, Jin-Ho (Dept. of Nano-Bio Textile Engineering, Kumoh National Institute of Technology)
Publication Information
Textile Coloration and Finishing / v.21, no.4, 2009 , pp. 33-38 More about this Journal
Abstract
Poly(vinyl acetate) films containing benzophenone were photocrosslinked by continuous UV irradiation.UV irradiation of PVAc film containing 5% benzophenone induced bulk crosslinking of the polymer indicated by 84.1% of gel fraction after ethyl acetate extraction. The crosslinking was attributed to the recombination of tertiary polymer radicals generated upon UV irradiation, which was enhanced by the hydrogen abstraction of benzophenone. Also the UV irradiation resulted in scission of ester linkage and photooxidation of PVAc surface, which was verified by ATR and zeta potential analysis, implying that the PVAc surface became more polar and hydrophilic. The zeta potential proportionally increased from +4.5mV to -26.8 mV with increasing UV irradiation. Also the surface energy of the PVAc film increased with higher UV irradiation upto 56.5 $mJ/m^2$ by the enhanced Lewis acid/base component with larger contribution of Lewis acid parameter. Accordingly the crosslinked PVAc showed higher thermal stability with increasing UV energy.
Keywords
PVAc; photocrosslinking; hydrophilicity; gel fraction; thermal stability;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 D. Yao, B. Qu, Q. Wu, Photoinitiated Crosslinking of Ethylene-vinyl acetate Copolymers and Characterization of Related Properties, Polymer Engineering & Science, 47, 1761-1767(2007)   DOI   ScienceOn
2 J. Jang, S. Eom and Y. Kim, Continuous Surface Modification of PET Film via UV IrradiationEffect of Spectral Irradiance, Textile Science and Engineering, 39, 100-107(2002)
3 H. S. Lee, W. S. Son, J. H. Yu, W. S. Lyoo, and J. Jang, Dyeability of Surface Modified Cellulose Acetate Fabrics via UV Irradiation, Textile Science and Engineering, 43, 183-190(2006)   과학기술학회마을   ScienceOn
4 C. 1. van ass, R. 1. Good, and M. K. Chaudhury, Additive and Nonadditive Surface-tension Components and the Interpretation of Contact Angles, Langmuir, 4, 884-891(1988)   DOI
5 R. Baskaran, S. Selvasekarapandian, N. Kuwata, 1. Kawamura, T. Hattori, AC impedance, DSC and Ff -IR investigations on ( $\chi$ )PV Ac-(1- $\chi$) PVDP Blends with $LiCI0_4$, Materials Chemistry and Physics, 98, 55-61(2006)   DOI   ScienceOn
6 W. Huang and J. Jang, Hydrophilic Modification of PET Fabric via Continuous Photografting of Acrylic acid and Hydroxyethyl Methacrylate, Fibers and Polymers, 10, 27-33(2009)   DOI   ScienceOn
7 W. S. Go and J. Jang, Continuous Photografting of HEMA onto Polypropylene Fabrics with Benzophenone Initiator, Fibers and Polymers, 9, 375-379(2008)   DOI   ScienceOn
8 G. W. Koo and J. Jang, Surface Modification of Poly(Lactic Acid) by UVjOzone Irradiation, Fibers and Polymers, 9, 674-678(2008)   DOI   ScienceOn
9 Q. WU and B. Qu, Photoinitiating Characteristics of Benzophenone Derivatives as New Initiators in the Photocrosslinking of Polyethylene, Polymer Engineering & Science, 41, 1220-1226(2001)   DOI   ScienceOn
10 Q. WU and B. Qu, Synthesis of Di(4-hyroxyl bezophenone) Sebacate and Its Usage as Initiator in the Photocrosslinking of Polyethylene, Journal of Applied Polymer Science, 85, 1581-1586(2002)   DOI   ScienceOn
11 W. Huang and J. Jang, Photografting of PET Fabrics with Vinyl Pyrrolidone and Acryloyl Morpholine Monomers, Journal of the Korean Society of Dyers and Finishers, 20, 28-34(2008)   과학기술학회마을   ScienceOn
12 H. S. Lee, Y. K. Jeong, and J. Jang, Surface Modification of Cellulose Acetate Using UVj03 Irradiation, Journal of the Korean Society of Dyers and Finishers, 20, 281-287(2006)
13 E. S. Wilks, 'Industrial Polymers Handbook', Vol. 2, Wilmington, USA, Wiley, pp.907-922, 2001
14 I. S. Elashmawi, N. A. Hakeem, E. M. Abdelrazak. Spectroscopic and Thermal Studies of PSjPV Ac Blends, Physica B, 403, 3547-3552(2008)   DOI   ScienceOn