The effects of carbon nanotube and magnesium maleate on the performance of ethylene-propylene-diene monomer (EPDM)/ polypropylene (PP) thermoplastic vulcanizate (TPV) with good shape memory behavior and electrical conductivity

IF 4.5 2区化学 Q2 POLYMER SCIENCE

Polymer Pub Date : 2025-07-25 DOI:10.1016/j.polymer.2025.128854

Mengmeng Xu, Chengzhong Zong

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引用次数: 0

Abstract

The type of EPDM/PP TPV was the most widely used TPV with excellent mechanical property. To achieve functional property of EPDM/PP TPV, the EPDM/PP TPV compatibilized by magnesium maleate (MgMA) and maleic anhydride (MAH) was compounded with carbon nanotube (CNT) during dynamic vulcanization. The hydroxyl on CNT could reacted with the anhydride group on the graft products of polymer chains that promoted the uniform dispersion of CNT in TPV. The EPDM/PP TPV with excellent shape memory performance and electrical conductivity was successfully prepared. The successful reaction of CNT with anhydride on polymer chains in the compatibilized TPV M5C2 was verified by the result of FTIR, Raman spectrum and SEM image, which improved the mechanical performance, shape memory property and electrical conductivity of TPV M5C2 compared to TPV M0C2 with the same CNT content. TPV M5C1 obtained excellent shape memory performance with the R_f of 96.0 % and R_r of 93.9 %. The electrical conductivity of TPV M5C8 was as high as 1.6 × 10⁻⁴ S·cm⁻¹ demonstrating the formation of CNT conductive network in TPV.

Abstract Image

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研究了碳纳米管和马来酸镁对具有良好形状记忆性能和导电性的三元乙丙/聚丙烯热塑性硫化胶（TPV）性能的影响

EPDM/PP型TPV具有优异的力学性能，是目前应用最广泛的TPV。为了获得EPDM/PP TPV的功能性能，在动态硫化过程中，将马来酸镁（MgMA）和马来酸酐（MAH）增容的EPDM/PP TPV与碳纳米管（CNT）复合。碳纳米管上的羟基能与聚合物链接枝产物上的酸酐基团发生反应，促进了碳纳米管在TPV中的均匀分散。成功制备了具有优异形状记忆性能和导电性的EPDM/PP TPV材料。通过FTIR、拉曼光谱和SEM图像验证了碳纳米管在增容的TPV M5C2中与酸酐在聚合物链上的成功反应，与相同碳纳米管含量的TPV M5C2相比，TPV M5C2的力学性能、形状记忆性能和电导率都得到了提高。TPV M5C1具有优异的形状记忆性能，Rf为96.0%，Rr为93.9%。TPV M5C8的电导率高达1.6×10-4S·cm-1，表明在TPV中形成了碳纳米管导电网络。

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来源期刊

Polymer 化学-高分子科学

CiteScore

7.90

自引率

8.70%

发文量

959

审稿时长

32 days

期刊介绍： Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.