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Journal of Zhejiang University SCIENCE A 2007 Vol.8 No.7 P.991-998


Unperturbed dimensions of atactic poly(dibenzyl itaconate)s

Author(s):  MA Hai-zhu, YE Gao-xiang

Affiliation(s):  Department of Physics, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   mahaizhu@126.com, gxye@mail.hz.zj.cn

Key Words:  Poly(dibenzyl itaconate)s, Mean-square radius of gyration, Temperature coefficient, Tacticity

MA Hai-zhu, YE Gao-xiang. Unperturbed dimensions of atactic poly(dibenzyl itaconate)s[J]. Journal of Zhejiang University Science A, 2007, 8(7): 991-998.

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%DOI 10.1631/jzus.2007.A0991

T1 - Unperturbed dimensions of atactic poly(dibenzyl itaconate)s
A1 - MA Hai-zhu
A1 - YE Gao-xiang
J0 - Journal of Zhejiang University Science A
VL - 8
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SP - 991
EP - 998
%@ 1673-565X
Y1 - 2007
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2007.A0991

The unperturbed dimension and temperature character of poly(dibenzyl itaconate)s (PDBzI) are studied by a revised rotational isomeric state (RIS) method. The improved formulas of the mean-square radius of gyration, deduced by the pseudo-stereochemical equilibrium approach, may be used to investigate the configurational-conformational properties of atactic polymers with large side groups [poly(itaconates) for instance]. The calculated results showed that poly(itaconates) have larger dimension of the molecule than other vinyl polymers. Comparison of the dimension between considering and without considering side groups showed that the effect of large side groups on the unperturbed dimension for short-chain polymers is more obvious than that of long-chain polymers and, if the dimension of side groups increases, the effect also increases. The dimension differences of PDBzI between short-chain and long-chain polymers are investigated by the relation of characteristic ratios and temperature coefficients with temperature. Moreover, the dependence between the temperature coefficients and the tacticity of chains shows that the temperature characters of the isotactic, syndiotactic and atactic PDBzI chains have remarkable difference.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


[1] Alfonso, G.C., Yan, D.Y., Zhou, Z.P., 1993. Configurational-conformational statistics of atactic polypropylene. Polymer, 34(13):2830-2835.

[2] Flory, P.J., Sundararajan, P.R., 1974. Configurational statistics of vinyl polymer chains. J. Am. Chem. Soc., 96(16):5015-5024.

[3] Flory, P.J., Yoon, D.Y., 1974. Moments and distribution function for polymer chains of finite length. 1. theory. Macromolecule, 61(12):5358-5365.

[4] Ma, H.Z., Zhang, L.X., 1997. Effect of side group on mean-square radius of gyration of atactic poly(methyl methacrylate) chain. Polymer Journal, 29(12):1012-1015.

[5] Ma, H.Z., Ye, G.X., 2006. Dimensions of atactic poly(α-methylstyrene) chain with side groups. Chinese Journal of Polymer Science, 24(1):87-93.

[6] Ma, H.Z., Wu, J.F., Xu, J.M., 1997. Unperturbed mean-square radius of gyration of atactic polystyrene chain with side groups. European Polymer Journal, 33(10-12):1813-1815.

[7] Ma, H.Z., Zhang, L.X., Xu, J.M., 2001. Dependence of intrinsic viscosity on tacticity of polystyrene. Acta Polymerica Sinica, 6:769-771 (in Chinese).

[8] Osa, M., Yoshizaki, T., Yamakawa, H., 2000. Mean-square radius of gyration of oligo- and poly(α-methylstyrene)s. Macromolecules, 33(13):4828-4835.

[9] Saiz, E., Horta, A., Gargallo, L., Hernández-Fuentes, I., Radic, D., 1988. Dipole moment and conformational analysis of itaconate. Macromolecules, 21(6):1736-1740.

[10] Sundararajan, P.R., 1986. Conformational analysis of poly(methyl methacrylate). Macromolecules, 19(2):415-421.

[11] Sundararajan, P.R., Flory, P.J., 1974. Configurational characteristics of poly(methyl methacrylate). J. Am. Chem. Soc., 96(16):5025-5031.

[12] Velickovic, J., Filipovic, J., 1984. Unperturbed dimensions of poly{bis(phenyl-n-alkyl) itaconates}. Macromolecules, 17(4):611-614.

[13] Yamakawa, H., Yoshizaki, T., 2004. Contributions of short-rang and excluded-volume interactions to unperturbed polymer chain dimensions. J. Chem. Phys., 121(7):3295-3298.

[14] Yan, D.Y., Zhou, Z.P., 1999. Configurational-conformational statistics of stereoirregular poly(methyl methacrylate)s. Joural of Macromolecular Science-Physics, B38(3):217-225.

[15] Yazdani-Pedram, M., Gargallo, L., Radić, D., 1985a. Polymer conformation and viscometric behaviour—4. Characterization and conformational studies for poly(dibenzyl itaconate). European Polymer Journal, 21(5):461-465.

[16] Yazdani-Pedram, M., Gargallo, L., Radić, D., 1985b. Polymer conformation and viscometric behaviour—5: Synthesis, characterization and conformational studies for poly(monobenzyl itaconate). European Polymer Journal, 21(8):707-710.

[17] Zhou, Z.P., Abe, A., 2003. Effect of the pendany ester group orientations on the dipole moment of poly(alkyl acrylate)s. Macromolecules, 36(19):7366-7371.

[18] Zhou, Z.P., Abe, A., 2004. A RIS treatment of the mean-square dipole moment of PMMA chains in consideration of the pendany ester group orientations. Polymer, 45(4):1313-1320.

[19] Zhou, Z.P., Yan, D.Y., 1995. Improved expression of the mean-square radius of gyration, 2 poly(1,1-disubstituted ethylene)s. Macromolecular Theory and Simulations, 4(1):155-164.

[20] Zhou, Z.P., Yan, D.Y., 2001. Configurational-conformational statistics of poly(ethylene-propylene)s. Journal of Macromolecular Science Part B-Physics, 40(2):231-237.

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