Excellent Compatibilization Effect of a Dual Reactive Compatibilizer on the Immiscible MVQ/PP Blends

Han-Bin Wang; Hong-Chi Tian; Shi-Jia Zhang; Bing Yu; Nan-Ying Ning; Ming Tian; Li-Qun Zhang

doi:10.1007/s10118-023-2945-z

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Excellent Compatibilization Effect of a Dual Reactive Compatibilizer on the Immiscible MVQ/PP Blends

RESEARCH ARTICLE | Updated：2023-06-14

- Excellent Compatibilization Effect of a Dual Reactive Compatibilizer on the Immiscible MVQ/PP Blends
- Chinese Journal of Polymer Science Vol. 41, Issue 7, Pages: 1133-1141(2023)
- Affiliations：
  
  a.Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
  b.Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  c.Shandong Dawn Polymer Material Co., Ltd., Longkou 265700, China
- Author bio：
  
  ningny@mail.buct.edu.cn (N.Y.N.)
  tianm@mail.buct.edu.cn (M.T.)
- Funds：
- DOI：10.1007/s10118-023-2945-z
  CLC：
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Han-Bin Wang, Hong-Chi Tian, Shi-Jia Zhang, et al. Excellent Compatibilization Effect of a Dual Reactive Compatibilizer on the Immiscible MVQ/PP Blends. [J]. Chinese Journal of Polymer Science 41(7):1133-1141(2023)
DOI：

Han-Bin Wang, Hong-Chi Tian, Shi-Jia Zhang, et al. Excellent Compatibilization Effect of a Dual Reactive Compatibilizer on the Immiscible MVQ/PP Blends. [J]. Chinese Journal of Polymer Science 41(7):1133-1141(2023) DOI： 10.1007/s10118-023-2945-z.

摘要

A dual reactive compatibilizer was designed to compatibilize MVQ/PP blends. Under the GMA/MAH molar ratio of 0.5/1, the interface thickness largely increases, the average size of MVQ dispersed phase largely decreases, and the mechanical properties of the blend are increased, all indicating its good compatibilization effect.

Abstract

Methyl vinyl silicone rubber (MVQ)/polypropylene (PP) thermoplastic vulcanizate (TPV) combines the good melt processability, recyclability and sealing performance as well as biosafety, stain and fluid resistance, and thus it is especially suitable in bio-safety areas and wearable electronic devices,etc,. Nevertheless, the compatibility between MVQ and PP phases is poor. A big challenge on the compatibilization of MVQ/PP blends is that neither MVQ nor PP contains any reactive groups. In this study, a dual reactive compatibilizer composed of ethylene-methyl acrylate-glycidyl methacrylate terpolymer (EMA-,co,-GMA) and maleic anhydride grafted polypropylene (PP-,g,-MAH) was designed for the compatibilization of MVQ/PP blends. During melt blending, a copolymer compatibilizer at the MVQ/PP interface can be formed because of the ,in situ, reaction between EMA-,co,-GMA and PP-,g,-MAH. The thermodynamic predict of its compatibilization effect through calculating the spreading coefficient of the ,in situ, formed copolymer indicates that it can well compatibilize MVQ/PP blends. The experimental results show that under the GMA/MAH molar ratio of 0.5/1, the interface thickness largely increase from 102 nm for non-compatibilized blend to 406 nm, and the average size of MVQ dispersed phase largely decreases from 2.3 μm to 0.36 μm, the ,T,g, of the two phases shifts toward each other, the mixing torque and mechanical properties of the blend are increased, all indicating its good compatibilization effect. This study provides a good compatibilizing method for immiscible MVQ/PP blends with no reactive groups in both components for the preparation of high performance MVQ/PP TPVs.

关键词

Keywords

Methyl vinyl silicone rubber (MVQ)Polypropylene (PP)Immiscible polymer blendsReactive compatibilization

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