

FOLLOWUS
a.Advanced Rheology Institute, Department of Polymer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
b.National Certified Enterprise Technology Center, Kingfa Science and Technology Co., Ltd., Guangzhou 510663, China
c.DPI, P.O. Box 902, 5600 AX Eindhoven, the Netherlands
huangxianbo@kingfa.com.cn (X.B.H.)
wyu@sjtu.edu.cn (W.Y.)
Received:01 May 2024,
Revised:2024-06-28,
Accepted:01 August 2024,
Online First:21 October 2024,
Published:01 December 2024
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Hou, F. Y.; Peng, L.; Yu, F.; Huang, X. B.; Yu, W. Droplet bridging effect in polymer/polymer/filler ternary composites. Chinese J. Polym. Sci. 2024, 42, 1966–1975
Feng-Yi Hou, Li Peng, Fei Yu, et al. Droplet Bridging Effect in Polymer/Polymer/Filler Ternary Composites[J]. Chinese Journal of Polymer Science, 2024, 42(12): 1966-1975.
Hou, F. Y.; Peng, L.; Yu, F.; Huang, X. B.; Yu, W. Droplet bridging effect in polymer/polymer/filler ternary composites. Chinese J. Polym. Sci. 2024, 42, 1966–1975 DOI: 10.1007/s10118-024-3212-7.
Feng-Yi Hou, Li Peng, Fei Yu, et al. Droplet Bridging Effect in Polymer/Polymer/Filler Ternary Composites[J]. Chinese Journal of Polymer Science, 2024, 42(12): 1966-1975. DOI: 10.1007/s10118-024-3212-7.
A talc-POE hybrid network is formed in PP/POE/talc ternary blends with talc fillers selectively located at POE phase interface. The linear rheology behavior indicates that besides the "volume exclusion effect" of POE phase for talc fillers
the talc-POE hybrid network can further contribute to the reinforcement effect.
In particle-filled polymer composites with selective distributions of fillers in one phase
much attention has been focused on the "volume exclusion effect" in reducing the percolation threshold of filler
while the role of dispersed polymer phase acting as bridges of fillers in the particle network has largely been ignored. Herein
we studied industrially important ternary composites
polypropylene (PP)/ethylene-octene copolymer (a polyolefin elastomer
POE)/talc systems
and adopted rheology to reveal the bridging behavior of POE droplets in the network of talc particles. It is found that talc fillers concentrate in the PP phase using the "blend first" protocol
while more talc particles are located at the interface of PP and POE phases using the "filler first" protocol. Changing the POE viscosity and talc size can affect the migration of talc from the POE phase to the PP phase in the "filler first" protocol. The linear rheology behavior indicates that besides the "volume exclusion effect"
the talc-POE hybrid network can further contribute to the reinforcement effect. Meanwhile
the POE droplet bridging structure can facilitate the rebuilding of the hybrid network after large amplitude oscillatory shear
in contrast to the un-recoverable structures in the PP/talc binary composites. The correlation between rheology and selective distribution of fillers in ternary composites may provide practical guidance for processing and designing advanced polymer composites with controlled selective location of fillers.
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