磷钨酸引发三氧亚甲基与第二单体开环共聚的研究

IF 2 4区工程技术 Q3 ENGINEERING, CHEMICAL

Advances in Polymer Technology Pub Date : 2022-09-01 DOI:10.1155/2022/5094734

Yanhong Li, Y. Jin, Hongjuan Li, Xiang Li, Yatao Wang, Ruofan Liu, Yibo Wu

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引用次数: 0

摘要

本研究以磷钨酸(PTA)为引发剂，1,3,5-三氧环(TOX)与1,3-二氧环烷(DOX)、八甲基环四硅氧烷(D4)、环氧环己烷(CHO)为第二单体，采用本体阳离子开环聚合法制备了一系列聚氧亚甲基共聚物。采用氢核磁共振(1H-NMR)、红外光谱(IR)、热重(TG)和差示扫描量热法(DSC)对产物进行了表征。利用密度泛函理论(DFT)在b3lyp/6-31g(d)计算能级计算共聚能垒，探讨第二单体与1,3,5-三氧环的共聚能力。结果表明，CHO作为第二单体更容易参与共聚反应，共聚物表现出较好的热稳定性。

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Study on Ring-Opening Copolymerization of Trioxymethylene and Second Monomer Initiated by Phosphotungstic Acid

In this study, a series of polyoxymethylene copolymers are synthesized by bulk cationic ring-opening polymerization by 1,3,5-trioxane (TOX) with 1,3-dioxolane (DOX), octamethylcyclotetrasiloxane (D4), and cyclohexane oxide (CHO) as the second monomer using phosphotungstic acid (PTA) as an initiator. The polymer products were characterized by hydrogen nuclear magnetic resonance (1H-NMR), infrared spectroscopy (IR), thermogravimetry (TG), and differential scanning calorimetry (DSC). And the copolymerization energy barrier was calculated at the b3lyp/6-31g(d) calculation level using density functional theory (DFT) to explore the copolymerization ability of the second monomer with 1,3,5-trioxane. The results showed that CHO as the second monomer more easily participated in the copolymerization reaction, and the copolymers showed better thermal stability.

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来源期刊

Advances in Polymer Technology 工程技术-高分子科学

CiteScore

5.50

自引率

0.00%

发文量

审稿时长

9 months

期刊介绍： Advances in Polymer Technology publishes articles reporting important developments in polymeric materials, their manufacture and processing, and polymer product design, as well as those considering the economic and environmental impacts of polymer technology. The journal primarily caters to researchers, technologists, engineers, consultants, and production personnel.