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  5. THE OBSERVATION OF INTERNAL MOTION OF LINEAR POLYSTYRENE CHAINS IN CYCLOHEXANE AROUND θ TEMPERATURE

THE OBSERVATION OF INTERNAL MOTION OF LINEAR POLYSTYRENE CHAINS IN CYCLOHEXANE AROUND θ TEMPERATURE

来源 :高分子科学（英文版） | 被引量 : 0次 | 上传用户：aaaj199054
【摘 要】
：
A high molecular weight (Mw=1.85×107) polystyrene (PS) with narrow distribution was prepared by high vacuum anionic polymerization in tetrahydrofuran.By use of
【作 者】
：
Jun-fang Li Yi-jie Lu Guang-zh 
【机 构】
：
The Hefei National Laboratory for Physical Sciences at Microscale,Department of Chemistry
【出 处】
：
高分子科学（英文版）
【发表日期】
：
2004年期
【关键词】
：
Dynamic light scattering Internal motion Relaxation time 
【基金项目】
：
国家自然科学基金;the Hong Kong Special Administration Region Earmarked Project;中国科学院基金
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A high molecular weight (Mw=1.85×107) polystyrene (PS) with narrow distribution was prepared by high vacuum anionic polymerization in tetrahydrofuran.By use of dynamic light scattering,the dynamics of PS chains in cyclohexane was studied around the 0 temperature.For the first time,we have observed the internal motion of polymer chains in solutions below the θ temperature by using dynamic light scattering at smaller angles (even qRg
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