CJCU

Chem. J. Chinese Universities ›› 2000, Vol. 21 ›› Issue (7): 1154.

• Articles • Previous Articles     Next Articles

Effect of Solvents on the Morphology and Properties of SBS Solution Cast Films

WANG You1,2, DONG Yao2, SHEN Jing-Shu2, LONG Cheng-Fen2   

  1. 1. Department of Applied Chemisty, Harbin University of Technology, Harbin 150001, China;
    2. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
  • Received:1999-05-28 Online:2000-07-24 Published:2000-07-24

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Abstract: The effect of solvents on the morphology and properties of styrene-butadiene-styrene(SBS, {Mn=}99575, Mw/Mn=1.3, S/B=3∶7) triblock copolymer films was studied in this paper. The solvents used in the study are: ethylmethylketone, a preferential solvent for the PSblock; toluene, a non-preferential solvent for both the PSand the PBblocks; and mixed hexane/cyclohexane(2/5, in volume ratio), a preferential solvent for the PBblock. The morphology of samples cast from solutions from different solvents and then stained by RuO4 was observed by TEM. Moreover, the tensile properties and deformation recovery behavior for these samples were measured and the results are explained according to the microstructures observed.

Key words: Microphase separation, Preferential solvent, Non-preferential solvent

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