| STUDY ON THE CONCENTRATION EFFECTS IN GPC IV A NEW METHOD FOR DETERMINATION OF SECOND VIRIAL COEFFICIENTS FROM THE CONCENTRATION EFFECTS |
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| 作者姓名： | 胡桂贤 宋名实 |
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| 作者单位： | Department of Polymer Science，Beijing Institute of Chemical Technology，Beijing，Department of Polymer Science，Beijing Institute of Chemical Technology，Beijing |
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| 基金项目： | The project supported by National Natural Science Foundation of China. |
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| 摘 要： | In this paper a new relation between the second virial coefficients A_2, (?)_w and (dV_(es)/dC)_c→0=K_s was derived from proposed model theory of concentration effects in GPC for mono-and poly-dispersed polymers. Based on this relation a new method for determination of second vifial coefficients from the combination of (dV_(es)/dC)_c→0=K_3, (?)_w and K_H measurements was proposed.The values of A_2 for mono-and poly-dispersed polystyrenes with molecular weight range from 10~4 to 10~6 in good and theta solvents were determined by proposed method. Results show that their values of A_2 are in agreement with those obtained by light scattering.
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| 收稿时间： | 1990-04-05 |
STUDY ON THE CONCENTRATION EFFECTS IN GPC IV A NEW METHOD FOR DETERMINATION OF SECOND VIRIAL COEFFICIENTS FROM THE CONCENTRATION EFFECTS |
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| HU Guixian,SONG Mingshi.STUDY ON THE CONCENTRATION EFFECTS IN GPC IV A NEW METHOD FOR DETERMINATION OF SECOND VIRIAL COEFFICIENTS FROM THE CONCENTRATION EFFECTS[J].Chinese Journal of Polymer Science,1991,0(2):151-159. |
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| Authors: | HU Guixian SONG Mingshi |
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| Institution: | Department of Polymer Science; Beijing Institute of Chemical Technology; Beijing |
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| Abstract: | In this paper a new relation between the second virial coefficients A2, (?)w and (dVes/dC)c→0=Ks was derived from proposed model theory of concentration effects in GPC for mono-and poly-dispersed polymers. Based on this relation a new method for determination of second vifial coefficients from the combination of (dVes/dC)c→0=K3, (?)w and KH measurements was proposed.The values of A2 for mono-and poly-dispersed polystyrenes with molecular weight range from 104 to 106 in good and theta solvents were determined by proposed method.Results show that their values of A2 are in agreement with those obtained by light scattering. |
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| Keywords: | Polymer solution Second virial coefficient GPC |
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