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  5. Two-step yielding of core-shell microgels: An investigation of “hard” and “soft” cage yielding mecha

Two-step yielding of core-shell microgels: An investigation of “hard” and “soft” cage yielding mecha

来源 :The 11th International Symposium on Polymer Physics(PP2014)( | 被引量 : 0次 | 上传用户：cwsyydr01
【摘 要】
：
Rheological measurements are utilized to examine the yielding behavior of a polystyrene (PS) core and poly (N-isopropylacrylamide) (PNIPAM) shell microgel system with varying shell/core ratio.For a sh
【作 者】
：
Zhi Zhou Javoris V. Hollingsworth He Cheng Charles C. Han 
【机 构】
：
State Key Laboratory of Polymer Physics and Chemistry,Institute of Chemistry,CAS,Beijing 100080,P. R
【出 处】
：
The 11th International Symposium on Polymer Physics(PP2014)(
【发表日期】
：
2014年1期
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Rheological measurements are utilized to examine the yielding behavior of a polystyrene (PS) core and poly (N-isopropylacrylamide) (PNIPAM) shell microgel system with varying shell/core ratio.For a shell/core ratio of 0.15,which is near hard sphere (HS),the suspensions show a typical HS yielding response where the loss modulus (G") exhibits a single peak due to cage breaking.As a result of tighter cages and less cage distortion prior to yielding,the location of the peak of G" decreases with volume fraction.
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