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Journal of Zhejiang University SCIENCE A 2008 Vol.9 No.11 P.1614~1620


“Cutting effect” of organoclay platelets in compatibilizing immiscible polypropylene/polystyrene blends

Author(s):  Yan ZHU, Hai-yun MA, Li-fang TONG, Zheng-ping FANG

Affiliation(s):  MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Institute of Polymer Composites, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   zpfang@zju.edu.cn

Key Words:  Compatibilization, Organoclay, Polymer blends, Polypropylene (PP), Polystyrene (PS)

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Yan ZHU, Hai-yun MA, Li-fang TONG, Zheng-ping FANG. “Cutting effect” of organoclay platelets in compatibilizing immiscible polypropylene/polystyrene blends[J]. Journal of Zhejiang University Science A, 2008, 9(11): 1614~1620.

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publisher="Zhejiang University Press & Springer",

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%T “Cutting effect” of organoclay platelets in compatibilizing immiscible polypropylene/polystyrene blends
%A Yan ZHU
%A Hai-yun MA
%A Li-fang TONG
%A Zheng-ping FANG
%J Journal of Zhejiang University SCIENCE A
%V 9
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%P 1614~1620
%@ 1673-565X
%D 2008
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0820104

T1 - “Cutting effect” of organoclay platelets in compatibilizing immiscible polypropylene/polystyrene blends
A1 - Yan ZHU
A1 - Hai-yun MA
A1 - Li-fang TONG
A1 - Zheng-ping FANG
J0 - Journal of Zhejiang University Science A
VL - 9
IS - 11
SP - 1614
EP - 1620
%@ 1673-565X
Y1 - 2008
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A0820104

In this work, polypropylene (PP)/polystyrene (PS) blends with different organoclay concentrations were prepared via melt compounding. Differing from the results of previous reports, the organoclay platelets are mostly located in the dispersed PS phase instead of the interface. The dimensions of the dispersed PS droplets are greatly reduced and apparent compatibilization effect still exists, which cannot be explained by the traditional compatibilization mechanism. A novel compatibilization mechanism, “cutting” to apparently compatibilize the immiscible PP/PS blends was proposed. The organoclay platelets tend to form a special “knife-like structure” in the PS domain under the shear stress of the continuous PP phase during compounding. The “clay knife” can split the dispersed PS domain apart and lead to the dramatic reduction of the dispersed domain size.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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