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Two antagonistic effects of flow/mixing on reactive polymer blending
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  • Guo-Hua HU,
  • Wei-Yun JI,
  • Tian-Tian LI,
  • Si-Bo Cheng,
  • Lian-Fang FENG,
  • Xue-Ping GU,
  • Cai-Liang Zhang
Guo-Hua HU
CNRS-Université de Lorraine

Corresponding Author:guo-hua.hu@univ-lorraine.fr

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Wei-Yun JI
Zhejiang University
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Tian-Tian LI
Zhejiang University
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Si-Bo Cheng
Zhejiang University
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Lian-Fang FENG
Zhejiang University
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Xue-Ping GU
Zhejiang University
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Cai-Liang Zhang
Zhejiang University
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Reactive polymer blending is basically a flow/mixing-driven process of interfacial generation, interfacial reaction for copolymer formation and morphology development. This work shows two antagonistic effects of mixing on this process: while mixing promotes copolymer formation by creating interfaces and enhancing collisions between reactive groups at the interfaces, excessive mixing may pull the in-situ formed copolymer out of the interfaces to one of the two polymer components of the blend, especially when the copolymer becomes highly asymmetrical. As such, the copolymer may loss its compatibilization efficiency. The mixing-driven copolymer pull-out from the interfaces is a catastrophic process (less than a minute), despite the high viscosity of the polymer blend. It depends on the molecular architecture of the reactive compatibilizer, polymer blend composition, mixing intensity and annealing. These findings are obtained using the concept of reactive tracer-compatibilizer and a model reactive polymer blend.
18 Dec 2021Submitted to AIChE Journal
22 Dec 2021Submission Checks Completed
22 Dec 2021Assigned to Editor
08 Jan 2022Reviewer(s) Assigned
30 Mar 2022Editorial Decision: Revise Minor
16 Apr 20221st Revision Received
16 Apr 2022Submission Checks Completed
16 Apr 2022Assigned to Editor
19 Apr 2022Reviewer(s) Assigned
12 Jun 2022Editorial Decision: Accept