Skip to content
Licensed Unlicensed Requires Authentication Published by De Gruyter June 23, 2016

Development of Styrenic Copolymers for Improving Heat Resistance of Poly(methyl methacrylate)

K. Nishino, Y. Shindo, Y. Kurokawa, T. Takayama and H. Ito

Abstract

Styrenic copolymers comprising styrene, methyl methacrylate, and maleic anhydride were developed to improve the heat-resistance property of poly(methyl methacrylate) (PMMA). The optical, thermal, and mechanical properties were examined for the blend specimens prepared by an injection-molding machine using melt-mixed samples. It was found that the copolymers, which were miscible with PMMA, increase the glass transition temperature and therefore the Vicat Softening temperature. Furthermore, the blends were completely transparent as similar to PMMA.


*Correspondence address, Mail address: Kohhei Nishino, Denka Company Limited, 6 Goi-minamikaigan, Ichihara, Chiba, Japan. E-mail:

References

Aelmans, N. J. J., Reid, V. M. C. and Higgins, J. S., “Change of Phase Behaviour of SMA/PMMA Blends during Processing at High Deformation Rate”, Polymer, 40, 50515062 (1999) 10.1016/S0032-3861(98)00702-2Search in Google Scholar

Aelmans, N. J. J., Reid, V. M. C. and Higgins, J. S., “Phase Behaviour of SMA/PMMA blends: The Influence of Processing at Low and High Deformation Rates”, Macromol. Symp., 149, 5362 (2000) 10.1002/1521-3900(200001)149:1Search in Google Scholar

Brannock, G. R., Barlow, J. W. and Paul, D. R., “Blends of Styrene/Maleic Anhydride Copolymers of with Polymethacrylates”, J. Polym. Sci., Part B: Polym. Phys., 29, 413429 (1991) 10.1002/polb.1991.090290404Search in Google Scholar

Chopra, D., Vlassopoulos, D. and Hatzikiriakos, S. G., “Shear-Induced Mixing and Demixing in Poly(styrene-co-maleic anhydride)/Poly-(methyl methacrylate) Blends”, J. Rheol., 42, 12271247 (1998) 10.1007/978-3-642-51062-5_26Search in Google Scholar

Chopra, D., Vlassopoulos, D. and Hatzikiriakos, S. G., “Flow-Induced Morphological Changes in Poly(styrene-co-maleic anhydride)/Poly(methyl methacrylate) Blends”, SPE ANTEC Tech. Papers, 57, 11901194 (1999)Search in Google Scholar

Chopra, D., Kontopoulou, M., Vlassopoulos, D. and Hatzikiriakos, S. G., “Effect of Maleic Anhydride Content on the Rheology and Phase Behavior of Poly(styrene-co-maleic anhydride)/poly(methyl methacrylate) Blends”, Rheol. Acta, 41, 1024 (2002) 10.1007/s003970200001Search in Google Scholar

Douglass, S. K., “Chapter 10 Viscoelastic Characterization of Polymer Blends”, in Polymer Blends, Paul, D. R., BucknallC.B. (Eds.), John Wiley and Sons, New York, p. 291–317 (2000)Search in Google Scholar

Feng, H., Shen, L. and Feng, Z., “Miscibility of Homopolymer/Random Copolymer Blends – 2. SMA/PMMA Blends”, Eur. Polym. J., 31, 243249 (1995) 10.1016/0014-3057(94)00160-XSearch in Google Scholar

Gan, P. P., Paul, D. R., “Phase Behavior of Blends of Styrene/Maleic Anhydride Copolymers”, J. Appl. Polym. Sci., 54, 317331 (1994) 10.1002/app.1994.070540306Search in Google Scholar

Hartig, S. M., Scheerhoorn, M., “New SMA Materials for Automotive Applications”, SPE ANTEC Tech. Papers, 50, 687689 (1992)Search in Google Scholar

Rojanapitayakorn, P., Thongyai, S. and Covavisaruch, S., “Phase Separation of Off-Critical Polymer Blends of Poly(styrene-co-maleic anhydride) and Poly(methyl methacrylate). I. Kinetics of Spinodal Decomposition”, J. Polym. Sci., Part B: Polym. Phys., 42, 871885 (2004) 10.1002/polb.10746Search in Google Scholar

Rojanapitayakorn, P., Thongyai, S. and Covavisaruch, S., “Phase Separation of Off-Critical Polymer Blends of Poly(styrene-co-maleic anhydride) and Poly(methyl methacrylate). II. Morphology and Mechanical Properties”, J. Polym. Sci., Part B: Polym. Phys., 42, 886897 (2004) 10.1002/polb.10747Search in Google Scholar

Vlassopoulos, D., “Rheology of Critical LCST Polymer Blend: Poly-(styrene-co-maleic anhydride)/(polymethyl methacrylate)”, Rheol. Acta, 35, 556566 (1996) 10.1007/BF00396507Search in Google Scholar

Received: 2015-09-29
Accepted: 2016-02-20
Published Online: 2016-06-23
Published in Print: 2016-07-30

© 2016, Carl Hanser Verlag, Munich