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Journal of Polymer Research

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01-01-2019 | REVIEW PAPER

Dynamically vulcanized polylactide/nitrile butadiene rubber blends with continuous cross-linked rubber phase

Authors: Lin Zhang, Jing Hua, Zhaobo Wang

Published in: Journal of Polymer Research | Issue 1/2019

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Abstract

Thermoplastic vulcanizates (TPVs) based on polylactide (PLA)/nitrile butadiene rubber (NBR) blends were prepared by dynamic vulcanization and the PLA matrix was plasticized by dioctyl phthalate (DOP). The surface morphologies of the etched PLA/DOP/NBR TPVs were studied by field emission scanning electron microscope, and the element contents in the TPV surface were characterized by energy dispersive X-Ray spectroscopy; moreover, the dissolution/swell behaviors, infrared spectra and rheological behavior of the prepared PLA/DOP/NBR TPV were also characterized. Experimental results indicated that the cross-linked NBR in the PLA/DOP/NBR TPVs owned a continuous network-like structure due to the much difference in the viscosity between the NBR rubber and the PLA resin. This unique finding breaks the traditional concept of a sea-island morphology which was formed after dynamic vulcanization of the thermoplastic resin/rubber blends. PLA grafted onto NBR under the action of DCP vulcanizing agent, leading to the improving interface compatibility. It should be noted that this PLA/DOP/NBR TPV with the novel microstructure has never been reported.

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Title: Dynamically vulcanized polylactide/nitrile butadiene rubber blends with continuous cross-linked rubber phase
Authors: Lin Zhang
Jing Hua
Zhaobo Wang
Publication date: 01-01-2019
Publisher: Springer Netherlands
Published in: Journal of Polymer Research / Issue 1/2019
Print ISSN: 1022-9760
Electronic ISSN: 1572-8935
DOI: https://doi.org/10.1007/s10965-018-1669-1

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