1-乙烯基-2-吡咯烷酮-甲基丙烯酸甲酯共聚物在ScCO2下的发泡行为

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-08-04 DOI:10.1177/0262489320929226

Miriam Trigo-lopez, José A. Reglero Ruiz, Saúl Vallejos, C. Ramos, S. Beltrán, F. García, J. García

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引用次数: 1

摘要

我们报道了基于1-乙烯基-2-吡咯烷酮(VP)和甲基丙烯酸甲酯(MMA)的细胞聚合物的制备、表征和发泡行为。根据本体自由基共聚程序制备了不同进料比的VP和MMA样品，使用市购单体并测试了两种不同的引发剂(光化学和热)，获得了约1.5 mm厚的固体样品。为了评价聚合过程，用质子核磁共振法测定了VP/MMA共聚物的化学结构。第二步，在不同温度下进行单批次超临界二氧化碳(CO2)发泡试验，以评估VP与MMA进料比和发泡温度对发泡聚合物密度、固体外皮存在、CO2吸附-解吸过程和泡沫聚合物细胞形态的影响。

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Foaming behavior of 1-vinyl-2-pyrrolidone–methyl methacrylate copolymers under ScCO2

We report on the preparation, characterization, and foaming behavior of cellular polymers based on 1-vinyl-2-pyrrolidone (VP) and methyl methacrylate (MMA). Samples with different feed ratios proportions of VP and MMA were prepared following the bulk radical copolymerization procedure, using commercially available monomers and testing two different initiators (photochemical and thermal), obtaining solid samples of around 1.5 mm thick. To evaluate the polymerization process, the chemical structure of VP/MMA copolymers was determined by proton nuclear magnetic resonance measurements. In a second step, single-batch supercritical carbon dioxide (CO2) foaming tests were carried out at different temperatures to evaluate the influence of the VP to MMA feed ratios and the foaming temperature in the density, the presence of solid outer skin, the CO2 sorption–desorption process, and the cellular morphology of the foamed polymers.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.