Browse > Article

Morphology and mechanical properties of LDPE/PS blends prepared by ultrasound-assisted melt mixing  

Ryu, Joung Gul (Applied Rheology Center, Department of Chemical Engineering Sogang University)
Kim, Hyungsu (Applied Rheology Center, Department of Chemical Engineering, Dankook University)
Kim, Myung Ho (LG Chemical Ltd.)
Lee, Jae Wook (Applied Rheology Center, Department of Chemical Engineering Sogang University)
Publication Information
Korea-Australia Rheology Journal / v.16, no.3, 2004 , pp. 147-152 More about this Journal
Abstract
Ultrasound-assisted melt mixing was applied to blending polystyrene (PS) and low density polyethylene(LDPE). The influence of the ultrasonic irradiation on the morphology and mechanical properties of the blends was investigated. It was observed that the domain sizes of the blend were significantly reduced and phase stability was well sustained even after a thermal treatment. Such morphological feature was consistent with the improvements in mechanical performance of the blends. The desirable results of ultrasonic compatibilization are mainly attributed to the in-situ formation of PS-LDPE copolymers as confirmed by a proper separation experiment. An important relationship between ultrasonic irradiation time and mechanical properties is revealed and an issue on the thermal stability of the blend is discussed.
Keywords
LDPE; PS; polymer blend; power ultrasound; in-situ compatibilization;
Citations & Related Records

Times Cited By Web Of Science : 5  (Related Records In Web of Science)
Times Cited By SCOPUS : 5
연도 인용수 순위
1 Oh, H.T, H.R. Kim, J.K. Kim and J.Y. Park, 2001, The morphology and mechanical properties of the blends of Syndiotactic polystyrene and Polystyrene-block-Poly(ethylene-cobutylene)-block-polystyrene copolymers, Korea-Australia Rheol. J. 13, 2, 88-87
2 Singh, A., 1999, Irradiation of polyethylene: Some aspect of crosslinking and oxidative degradation, Radiation Physics and Chemistry, 56, 375-380   DOI   ScienceOn
3 Teh, J.W. and A. Rudin, 1991, Properties and morphology of polystyrene and linear low density polyethylene polyblend and polyalloy, Polym. Eng. Sci. 31, 1033-1042   DOI
4 Wu, S., 1987, Formation of dispersed phase in incompatible polymer blends: Interfacial and Rheological Effects, Polym. Eng. Sci. 27, 335-343   DOI   ScienceOn
5 Lindsey, C.R., D.R. Paul and J.W. Barlow, 1981, Blends from reprocessed coextruded products, J. AppI. Polym. Sci. 26, 1, 9-16
6 Sundararaji, U., Y. Dori and C.W. Macosko, 1995, Sheet for mation in immiscible polymer blends: Model experiments on initial blend morphology, Polymer 36, 1957-1968   DOI   ScienceOn
7 Favis, B.D. and D. Therrien, 1991, Factors influencing structure formation and phase size in an immiscible polymer blend of polycarbonate and propylene prepared by twin-screw extrusion, Polymer 32, 1474-1481   DOI   ScienceOn
8 Kim, H., J.G. Ryu and J.W, Lee, 2002, Evolution of phase morphology and in-situ compatibilization of polymer blends during ultrasound-assisted melt mixing, Korea-Australia Rheol. J. 14, 121-128
9 Paul, D.R. and C.B. Bucknall, 1999, Polymer Blends: Formulation and Performance, John Wiley & Sons, New York
10 Chen, G., S. Guo and H. Li, 2002, Ultrasonic improvement of the compatibility and rheological behavior of high-density Polyethylene/polystyrene blends, J. Appl. Polym. Sci. 86, 23-32   DOI   ScienceOn
11 Kim, H. and J.W. Lee, 2002, Effect of ultrasonic wave on the degradation of polypropylene melt and morphology of its blend with polystyrene, PoIymer 43, 2585-2589
12 Xu, S.A., J.W. Xie and M. Jiang, 1999, Morphology and deformation of compatibilized polystyrene/low density polyethylene blends, PoIym. Int. 48, 1121-1128   DOI   ScienceOn
13 Hong, C.K. and A.I. Isayev, 2002, Continuous ultrasonic devulcanization of cabon-filled NR vulcanizates, J. Appl. Polym. Sci. 83, 2585-2589
14 Ryu, J.G., P.S. Lee, H.S. Kim and J.W. Lee, 2001, Ultrasonic degradation of polypropylene and its application for the development of PP based copolymer and nanocomposite, Korea-Australia RheoI. J. 13, 61-65
15 Sundararaji, U. and C.W. Macosko, 1995, Drop breakup and coalescence in polymer blends; The effects of concentration and compatibilization, J. Appl. PoIym. Sci. 28, 2647-2657