Enhanced physico-mechanical properties of EVA/PA blends via electron beam irradiation and vinyl acetate content

IF 2.8 4区工程技术 Q2 POLYMER SCIENCE Macromolecular Research Pub Date : 2023-12-06 DOI:10.1007/s13233-023-00223-9

Jawad Ahmed

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Abstract

This study investigates the effects of electron beam (E-beam) irradiation on ethylene-vinyl acetate copolymer/ternary polyamide (EVA/tPA) blends with varying vinyl acetate (VA) content (19%, 28%, and 33%). The EVA/tPA blends were exposed to E-beam doses ranging from 50 to 300 kGy, with the addition of trimethylolpropane triacrylate (TMPTMA) and triallyl isocyanurate (TAIC) as crosslinking co-agents. SEM analysis and FTIR spectroscopy confirmed that increasing the VA content in the EVA/tPA blends significantly improved compatibility after E-beam irradiation, resulting in enhanced tensile strength, storage modulus, and surface smoothness. The EVA/tPA/TMPTMA blend with 33% VA content exhibited a remarkable 132% increase in tensile strength and a 212% increase in storage modulus due to enhanced crosslinking formation post-irradiation. However, irradiation led to a decrease in elongation at break and blend crystallinity. TMPTMA co-agents demonstrated superior compatibility compared to TAIC, further enhancing the overall properties of the EVA/tPA blends. In conclusion, E-beam irradiation is an effective technique for producing high-performance EVA/tPA blends by utilizing higher VA content and suitable co-agents. These improved materials hold great potential for various applications, particularly in the oil pipeline and automotive industries.

Graphical abstract

Enhanced EVA/PA blend properties via electron beam crosslinking

Abstract Image

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电子束辐照和醋酸乙烯含量对EVA/PA共混物物理力学性能的影响

本文研究了电子束辐照对不同醋酸乙烯(VA)含量(19%、28%和33%)的乙烯-醋酸乙烯共聚物/三元聚酰胺(EVA/tPA)共混物的影响。将EVA/tPA共混物暴露在50至300 kGy的电子束剂量下，并添加三甲基丙烷三丙烯酸酯(TMPTMA)和三烯丙基异氰尿酸酯(TAIC)作为交联助剂。SEM分析和FTIR光谱证实，增加EVA/tPA共混物中VA的含量可以显著改善电子束辐照后的相容性，从而提高拉伸强度、存储模量和表面光滑度。VA含量为33%的EVA/tPA/TMPTMA共混材料，由于辐照后交联形成增强，拉伸强度提高132%，储存模量提高212%。然而，辐照导致断裂伸长率和共混结晶度下降。与TAIC相比，TMPTMA助剂表现出优越的相容性，进一步提高了EVA/tPA共混物的整体性能。综上所述，电子束辐照是利用高VA含量和合适的助剂制备高性能EVA/tPA共混物的有效技术。这些改进的材料在各种应用中具有巨大的潜力，特别是在石油管道和汽车工业中。电子束交联增强EVA/PA共混性能

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来源期刊

Macromolecular Research 工程技术-高分子科学

CiteScore

4.70

自引率

8.30%

发文量

100

审稿时长

1.3 months

期刊介绍： Original research on all aspects of polymer science, engineering and technology, including nanotechnology Presents original research articles on all aspects of polymer science, engineering and technology Coverage extends to such topics as nanotechnology, biotechnology and information technology The English-language journal of the Polymer Society of Korea Macromolecular Research is a scientific journal published monthly by the Polymer Society of Korea. Macromolecular Research publishes original researches on all aspects of polymer science, engineering, and technology as well as new emerging technologies using polymeric materials including nanotechnology, biotechnology, and information technology in forms of Articles, Communications, Notes, Reviews, and Feature articles.