In situ FT-IR spectroscopic study on the conformational changes of isotactic polypropylene in the presence of supercritical CO2

European Polymer Journal

Volumn 44, Issue 8, 2008, Pages 2619-2624

  Li, Bin ^a   Li, Lei ^a   Zhao, Ling ^a   Yuan, Weikang ^a  

^a EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY   (China)

Author keywords

Conformational change; FT IR; Isotactic polypropylene; Supercritical CO2

Indexed keywords

PLASTIC PRODUCTS; SPECTROSCOPIC ANALYSIS; THERMOPLASTICS;

CONFORMATIONAL CHANGE; CONFORMATIONAL CHANGES; FT-IR; IN-SITU FT-IR; ISOTACTIC POLYPROPYLENE; SPECTROSCOPIC STUDIES; SUPERCRITICAL CO; SUPERCRITICAL CO2;

POLYPROPYLENES;

EID: 49149090891     PISSN: 00143057     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.eurpolymj.2008.05.030     Document Type: Article

References (24)

1. 2 applications in the processing of polymers. Ind Eng Chem Res 42 (2003) 6431-6456
2. Liu T., Hu G.H., Tong G.S., Zhao L., Cao G.P., and Yuan W.K. Supercritical carbon dioxide assisted solid-state grafting process of maleic anhydride onto polypropylene. Ind Eng Chem Res 44 (2005) 4292-4299
3. Xu ZM, Jiang XL, Liu T, Hu GH, Zhao L, Zhu ZN, Yuan WK. Foaming of polypropylene with supercritical carbon dioxide. J Supercritical Fluids, in press.
4. Li B., Hu G.H., Cao G.P., Liu T., Zhao L., and Yuan W.K. Supercritical carbon dioxide-assisted dispersion of sodium benzoate in polypropylene and crystallization behavior of the resulting polypropylene. J Appl Polym Sci 102 (2006) 3212-3220
5. Handa Y.P., Zhang Z.Y., and Roovers J. Compressed-gas-induced crystallization in tert-butyl poly(ether ether ketone). J Polym Sci: B: Polym Phys 39 (2001) 1505-1512
6. Liao X., Wang J., Li G., and He J.S. Effect of supercritical carbon dioxide on the crystallization and melting behavior of linear bisphenol A polycarbonate. J Polym Sci: B: Polym Phys 42 (2004) 280-285
7. Kazarian S.G., Vincent M.F., Bright F.V., Liotta C.L., and Eckert C.A. Specific intermolecular interaction of carbon dioxide with polymers. J Am Chem Soc 118 (1996) 1729-1736
8. Zhu X.Y., Yan D.Y., Yao H.X., and Zhu P.F. In situ FTIR spectroscopic study of the regularity bands and partial-order melts of isotactic polypropylene. Macromol Rapid Commun 21 (2000) 354-357
9. Zhu X.Y., Yan D.Y., and Fang Y.P. In situ FTIR spectroscopic study of the conformational change of isotactic polypropylene during the crystallization process. J Phys Chem B 105 (2001) 12461-12463
10. Zhu X.Y., and Yan D.Y. In situ FTIR spectroscopic study on the melting process of isotactic polypropylene. Macromol Chem Phys 202 (2001) 1109-1113
11. Zhu X.Y., Li Y.J., Yan D.Y., Zhu P.F., and Lu Q.H. Influence of the order of polymer melt on the crystallization behavior: I. Double melting endotherms of isotactic polypropylene. Colloid Polym Sci 279 (2001) 292-296
12. Zhu X.Y., Fang Y.P., and Yan D.Y. A possible explanation to the structure change of isotactic polypropylene occurring at about 135 °C. Polymer 42 (2001) 8595-8598
13. Zhu X.Y., Fang Y.P., Li Y.J., Yan D.Y., Zhu P.F., and Lu Q.H. I In situ FTIR spectroscopic study of the conformational change of isotactic polypropylene during the heating process. Chem J Chin Univ 22 (2001) 1425-1427
14. He P., and Zhu X.Y. In situ Fourier transform infrared spectroscopic study of the thermal degradation of isotactic poly(propylene). Appl Spectr 59 (2005) 33-38
15. Miyamoto T., and Inagaki H. Structure and steric isomerism of polypropylene. J Polym Sci A-2 7 (1969) 963-981
16. Kobayashi M., Akita K., and Tadokoro H. Infrared spectra and regular sequence lengths in isotactic polymer chains. Makromol Chem 118 (1968) 324-342
17. 6 copolymers. Eur Polym J 12 (1976) 757-759
18. Kissin Y.V. Orientation of isotactic polypropylene in crystalline and amorphous phases: IR method. J Polym Sci, Polym Edition 21 (1983) 2085-2096
19. Sato Y., Fujiwara K., Takikawa T., Sumarno, Takishima S., and Masuoka H. Solubilities and diffusion coefficients of carbon dioxide and nitrogen in polypropylene, high-density polyethylene, and polystyrene under high pressures and temperatures. Fluid Phase Equilib 162 (1999) 261-276
20. Grasruck M., and Strobl G. Crystallization of s-polypropylene from the glassy state: indications for a multistage process. Macromolecules 36 (2003) 86-91
21. Bu H.S., Cao J., Xu S.Y., Zheng Z., and Wunderlich B. Multimolecule glasses and crystals of isotactic polystyrene. J Macromol Sci Phys B38 (1999) 251-262
22. Wang Z.G., Hsiao B.S., Srinivas S., Brown G.M., Tsou A.H., Cheng S.Z.D., and Stein R.S. Phase transformation in quenched mesomorphic isotactic polypropylene. Polymer 42 (2001) 7561-7566
23. Zhu X.Y., Yan D.Y., Fang Y.P., and Chen L. On-line FT-IR spectroscopic study of the disorientation of uniaxially stretched isotactic polypropylene upon heating. Appl Spectr 57 (2003) 104-106
24. Chen L., Wang Y.P., Zhu X.Y., and Yan D.Y. Influence of the conformational order of glassy isotactic polypropylene on its crystallization and melting behaviour. Polym Int 53 (2004) 131-135