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Effect of gamma ray on isothermal crystallization kinetics of syndiotactic polystyrene

Published online by Cambridge University Press:  29 October 2013

Yi-Wen Ting ,
Tinh Nguyen ,
Chen-Ti Hu ,
Chia-Chieh Chen  and
Sanboh Lee
Yi-Wen Ting
Affiliation:
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300, Taiwan
Tinh Nguyen
Affiliation:
Tinh Nguyen Scientific Consulting, Inc., Gaithersburg, Maryland 20878
Chen-Ti Hu*
Affiliation:
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300, Taiwan
Chia-Chieh Chen
Affiliation:
Institute of Nuclear Energy Research, Longtan, Taoyuan 32546, Taiwan
Sanboh Lee*
Affiliation:
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300, Taiwan
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Isothermal crystallization kinetics of gamma-irradiated syndiotactic polystyrene (sPS) has been investigated by differential scanning calorimetry. Amorphous sPS samples were irradiated in air with gamma ray at various doses from 0 to 800 kGy, at a rate of 30 kGy/h, and melt-crystallized at different temperatures and times. Kinetics parameters were determined using Avrami's model with Gaussian functions and a modified Arrhenius equation. Isothermally crystallized sPS irradiated in air with gamma ray exhibited multiple endothermic melting peaks corresponding to various crystalline forms, and the radiation dose had a strong effect on their melting enthalpies, crystallinities, and crystallization kinetic parameters. The amount of the α-crystalline form increased with increasing crystallization time and those of the β- and β′ forms had an opposite trend. Both crystallization half time and crystallization activation energy of the α form in gamma-irradiated sPS increased with increasing radiation dose.

Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 21 , 14 November 2013 , pp. 3053 - 3062
Copyright
Copyright © Materials Research Society 2013 

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References

REFERENCES

Evans, A.M., Kellar, E.J.C., Knowles, J., Galiotis, C., Carriere, C.J., and Andrews, E.H.: The structure and morphology of syndiotactic polystyrene injection molded coupons. Polym. Eng. Sci. 37, 153 (1997).CrossRefGoogle Scholar
Guerra, G., Vitaglian, V.M., Rosa, C.D., Petraccone, V., and Corradini, P.: Polymorphism in melt crystallized syndiotactic polystyrene samples. Macromolecules 23, 1539 (1990).CrossRefGoogle Scholar
Rosa, C.D.: Crystal structure of the trigonal modification (α form) of syndiotactic polystyrene. Macromolecules 29, 8460 (1996).CrossRefGoogle Scholar
Cartier, L., Okihara, T., and Lotzs, B.: The α″ superstructure of syndiotactic polystyrene: A frustrated structure. Macromolecules 31, 3303 (1998).CrossRefGoogle Scholar
Rosa, C.D., Rapacciuolo, M., Guerra, G., and Petraccone, V.: On the crystal structure of the orthorhombic form of syndiotactic polystyrene. Polymer 33(7), 1423 (1992).CrossRefGoogle Scholar
Ho, R.M., Lin, C.P., Tsai, H.Y., and Woo, E.M.: Metastability studies of syndiotactic polystyrene polymorphism. Macromolecules 33(17), 6517 (2000).CrossRefGoogle Scholar
Woo, E.M., Sun, Y.S., and Lee, M.L.: Crystal forms in cold-crystallized syndiotactic polystyrene. Polymer 40, 4425 (1999).CrossRefGoogle Scholar
Lin, R.H. and Woo, E.M.: Melting behavior and identification of polymorphic crystals in syndiotactic polystyrene. Polymer 41, 121 (2000).CrossRefGoogle Scholar
Hong, B.K., Jo, W.H., Lee, S.C., and Kim, J.: Correlation between melting behavior and polymorphism of syndiotactic polystyrene and its blend with poly(2,6-dimethyl-1,4-phenylene oxide). Polymer 39, 1793 (1998).CrossRefGoogle Scholar
Wang, C., Hsu, Y.C., and Lo, C.F.: Melting behavior and equilibrium melting temperatures of syndiotactic polystyrene in α and β crystalline forms. Polymer 42, 8447 (2001).CrossRefGoogle Scholar
Zhou, W., Lu, M., and Mai, K.: Isothermal crystallization, melting behavior and crystalline morphology of syndiotactic polystyrene blends with highly-impact polystyrene. Polymer 48, 3858 (2007).CrossRefGoogle Scholar
Rosa, C.D., de Ballesteros, O.R., Gennaro, M.D., and Auriemma, F.: Crystallization from the melt of α and β forms of syndiotactic polystyrene. Polymer 44, 1861 (2003).CrossRefGoogle Scholar
Ho, R.M., Lin, C.P., Hseih, P.Y., and Chung, T.M.: Isothermal crystallization-induced phase transition of syndiotactic polystyrene polymorphism. Macromolecules 34, 6727 (2001).CrossRefGoogle Scholar
Li, Y., He, J., Qiang, W., and Hu, X.: Effect of crystallization temperature on the polymorphic behavior of syndiotactic polystyrene. Polymer 43, 2489 (2002).CrossRefGoogle Scholar
Liu, C.K., Nguyen, T., Yang, T.J., and Lee, S.: Melting and chemical behaviors of isothermally-crystallized gamma-irradiated syndiotactic polystyrene. Polymer 50, 499 (2009).CrossRefGoogle Scholar
Lu, M., Zhao, X., Chen, L., Xiong, X., Zhang, J., Mai, K., and Wu, C.: Nucleation effect on polymorphism of melt-crystallized syndiotatic polystyrene. Polymer 52, 1102 (2011).CrossRefGoogle Scholar
Pruit, L.A.: The effects of radiation on the structural and mechanical properties of medical polymers. Adv. Polym. Sci. 162, 63 (2003).CrossRefGoogle Scholar
Chiang, I.J., Hu, C.T., and Lee, S.: Isothermal annealing of color centers in irradiated polystyrene in vacuum and air atmospheres. Mater. Chem. Phys. 70, 61 (2001).CrossRefGoogle Scholar
Lin, C.C., Ming, L.J., and Lee, S.: EPR kinetics in irradiated syndiotactic polystyrene at elevated temperatures. Polymer 49, 3987 (2008).CrossRefGoogle Scholar
Cimmino, S., Di Pace, E., Martuscelli, E., and Silvestre, C.: Syndiotactic polystyrene: Crystallization and melting behavior. Polymer 32, 1080 (1991).CrossRefGoogle Scholar
Woo, E.M. and Wu, F.S.: On the multiple melting behavior of polymorphic syndiotactic polystyrene and its behavior in a miscible state. Macromol. Chem. Phys. 199, 2041 (1998).3.0.CO;2-2>CrossRefGoogle Scholar
Janik, I. and Rosiak, J.M.: Radiation crosslinking and scission of poly(vinyl methyl ethyl) in aqueous solution. Radiat. Phys. Chem. 63, 529 (2002).CrossRefGoogle Scholar
Adem, E., Richards, J., Burillo, G., and Avalos-Borja, M.: Changes in poly-vinylidene fluoride produced by electron irradiation. Radiat. Phys. Chem. 54, 637 (1999).CrossRefGoogle Scholar
Musto, P., Tavone, S., Guerra, G., and De Rosa, C.: Evaluation by Fourier transform infrared spectroscopy of different crystalline forms in syndiotactic polystyrene samples. J. Polym. Sci., Part B: Polym. Phys. 35, 1055 (1997).3.0.CO;2-V>CrossRefGoogle Scholar
Avrami, M.: Granulation, phase change, and microstructure kinetics of phase change, I. J. Chem. Phys. 7, 1103 (1939).CrossRefGoogle Scholar
Avrami, M.: Transformation-time relations for random distribution of nuclei kinetics of phase change, II. J. Chem. Phys. 8, 212 (1940).CrossRefGoogle Scholar
Avrami, M.: Granulation, phase change and microstructure kinetics of phase change, III. J. Chem. Phys. 9, 177 (1941).CrossRefGoogle Scholar
Wessen, R.D.: Melt crystallization kinetics of syndiotactic polystyrene. Polym. Eng. Sci. 34, 1157 (1994).CrossRefGoogle Scholar
Chen, Q., Yu, Y., Na, T., Zhang, H., and Mo, Z.: Isothermal and non-isothermal melt-crystallization kinetics of syndiotactic polystyrene. J. Appl. Polym. Sci. 83, 2528 (2002).CrossRefGoogle Scholar
Wu, T.M., Hsu, S.F., Chen, C.F., and Wu, J.Y.: Isothermal and non-isothermal crystallization kinetics of syndiotactic polystyrene/clay nano-composite. Polym. Eng. Sci. 44, 2288 (2004).CrossRefGoogle Scholar
Wang, C., Huang, C.L., Cheng, Y.W., Cheng, Y.C., and Shong, J.: Radiation effects and re-crystallization mechanism of syndiotactic polystyrene with β′ crystalline form. Polymer 48, 7393 (2007).CrossRefGoogle Scholar
St. Lawrence, S. and Shinozaki, D.M.: Crystallization of syndiotactic polystyrene. Polym. Eng. Sci. 37, 1825 (1997).CrossRefGoogle Scholar
Yoshioka, A. and Tashiro, K.: Thermally- and solvent-induced crystallization kinetics of syndiotactic polystyrene viewed from time-resolved measurements of infrared spectra at the various temperatures estimation of glass transition temperature shifted by solvent absorption. Polymer 44, 6681 (2003).CrossRefGoogle Scholar