DYNAMIC LIGHT SCATTERING STUDY ON TRANSLATION DIFFUSION OF 8-ARM STAR POLYSTYRENE IN GOOD AND THETA SOLVENTS

LI Junbai; YIN Rui; MA Rongjiu; Shen Jiacong

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DYNAMIC LIGHT SCATTERING STUDY ON TRANSLATION DIFFUSION OF 8-ARM STAR POLYSTYRENE IN GOOD AND THETA SOLVENTS

Papers | Updated：2021-06-21

- DYNAMIC LIGHT SCATTERING STUDY ON TRANSLATION DIFFUSION OF 8-ARM STAR POLYSTYRENE IN GOOD AND THETA SOLVENTS
- Vol. 10, Issue 3, Pages: 236-241(1992)
- Affiliations：
  
  1. Chemistry Department of Jilin University,Changchun,130023
  2. Changchun 130023
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：20 September 1992
- Accepted：
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[1]李峻柏,殷锐,马荣久,沈家骢.DYNAMIC LIGHT SCATTERING STUDY ON TRANSLATION DIFFUSION OF 8-ARM STAR POLYSTYRENE IN GOOD AND THETA SOLVENTS[J].Chinese Journal of Polymer Science,1992,{4}(03):236-241.

LI Junbai, YIN Rui, MA Rongjiu, et al. DYNAMIC LIGHT SCATTERING STUDY ON TRANSLATION DIFFUSION OF 8-ARM STAR POLYSTYRENE IN GOOD AND THETA SOLVENTS[J]. 1992, 10(3): 236-241.
[1]李峻柏,殷锐,马荣久,沈家骢.DYNAMIC LIGHT SCATTERING STUDY ON TRANSLATION DIFFUSION OF 8-ARM STAR POLYSTYRENE IN GOOD AND THETA SOLVENTS[J].Chinese Journal of Polymer Science,1992,{4}(03):236-241. DOI：

LI Junbai, YIN Rui, MA Rongjiu, et al. DYNAMIC LIGHT SCATTERING STUDY ON TRANSLATION DIFFUSION OF 8-ARM STAR POLYSTYRENE IN GOOD AND THETA SOLVENTS[J]. 1992, 10(3): 236-241. DOI：

摘要

<正> The technique of dynamic light scattering has been used to investigate the translation diffusion behavior of 8-arm star polystyrene （SPS）in a good solvent

tetrahydrofuran （THF） or benzene （BZ） and a theta solvent

cyclohexane （CH）

by homodyne photon correlation spectroscopy .The intensityintensity autocorrelation function was analyzed by the method of cumulant. The translation diffusion coefficients have been obtained as a function of temperature and concentration. Under theta condition

the non-concentration dependence of diffusion coefficient showed the unperturbed Gaussian state o the SPS molecular chain. The different hydrodynamic radii estimated from Stokes- Einstein equation reflected the stretch extent of the arm chain for regular star polymer. The data of diffusion activation energy of SPS in THF

BZ and CH were also obtained respectively.

Abstract

The technique of dynamic light scattering has been used to investigate the translation diffusion behavior of 8-arm star polystyrene （SPS）in a good solvent

tetrahydrofuran （THF） or benzene （BZ） and a theta solvent

cyclohexane （CH）

BZ and CH were also obtained respectively.

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