Preparation of epoxy-functionalized acrylonitrile/(ethylene/propylene/diene mischpolymer)/ styrene (AES) copolymer (GAES) resins by high-temperature solution polymerization

IF 2.6 4区化学 Q3 POLYMER SCIENCE Journal of Polymer Research Pub Date : 2024-09-12 DOI:10.1007/s10965-024-04101-5

Liting Sun, Mingdong Li, Bing Nie, Jianying Ma, Chunlei Cao

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Abstract

In this paper, epoxy-functionalized AES resins (GAES resins) were prepared by high-temperature solution polymerization, and FTIR spectrograms demonstrated the successful grafting of styrene (St), acrylonitrile (AN), and glycidyl methacrylate (GMA) onto ethylene/propylene/diene mischpolymer (EPDM) rubbers. The influences of reaction conditions, i.e. the content of initiator and chain transfer agent, EPDM and GMA on the grafting ratio, composition of free copolymers, molecular weights and polymer dispersity index (PDI) of GAES resins were detaily investigated. The influence of GMA content on the thermal stabilities of GAES resins was also discussed. Experimental results showed that under the optimized experimental conditions, the highest grafting ratio of GAES resins reached to 39.2% and the grafting efficiency was 35.3%. Under the same reaction conditions, the molecular weights of free copolymers reached to 70,000 g mol⁻¹. The initiator had no obvious influence on the composition of free copolymers, but the component of GMA in free copolymers increased gradually with increasing content of EPDM. Thermogravimetry (TG) analysis results indicated that the incorporation of GMA decreased the thermal stabilities of GAES resins.

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通过高温溶液聚合法制备环氧官能化丙烯腈/（乙烯/丙烯/二烯异聚合物）/苯乙烯（AES）共聚物（GAES）树脂

本文采用高温溶液聚合法制备了环氧官能化 AES 树脂（GAES 树脂），傅立叶变换红外光谱图显示苯乙烯（St）、丙烯腈（AN）和甲基丙烯酸缩水甘油酯（GMA）成功接枝到乙烯/丙烯/二烯误共聚物（EPDM）橡胶上。详细研究了反应条件（即引发剂和链转移剂、三元乙丙橡胶和 GMA 的含量）对 GAES 树脂的接枝率、游离共聚物的组成、分子量和聚合物分散指数（PDI）的影响。此外，还讨论了 GMA 含量对 GAES 树脂热稳定性的影响。实验结果表明，在优化的实验条件下，GAES 树脂的最高接枝率达到 39.2%，接枝效率为 35.3%。在相同的反应条件下，游离共聚物的分子量达到 70,000 g mol-1。引发剂对游离共聚物的成分没有明显影响，但游离共聚物中 GMA 的成分随着 EPDM 含量的增加而逐渐增加。热重分析（TG）结果表明，GMA 的加入降低了 GAES 树脂的热稳定性。

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来源期刊

Journal of Polymer Research 化学-高分子科学

CiteScore

4.70

自引率

7.10%

发文量

472

审稿时长

3.6 months

期刊介绍： Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.