Precipitation polymerization of 2-hydroxyethyl methacrylate in supercritical carbon dioxide

Xiao-Hu Wang; Li-Qin Cao; Li-Juan Zhang; Ji-De Wang

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Precipitation polymerization of 2-hydroxyethyl methacrylate in supercritical carbon dioxide

机译：甲基丙烯酸2-羟乙酯在超临界二氧化碳中的沉淀聚合

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We report the successful precipitation polymerization of 2-hydroxyethyl methacrylate (HEMA) in supercritical carbon dioxide (scCO_2) at pressures ranging from 15 to 27MPa utilizing 2, 2'-azobisisobutyronitrile (AIBN) as a free radical initiator. The effects of the reaction pressure, initiator concentration, monomer concentration, reaction temperature, and reaction time were investigated. Analyses by scanning electron microscopy (SEM) indicated that in all reaction conditions, polymerization in the absence of stabilizer led to the formation of large aggregates of partially coalesced particles, with diameters of approximate 1-10mm. Analyses by gel permeation chromatography (GPC) indicated that for the reaction pressure, initiator concentration, monomer concentration, reaction temperature, and reaction time studied there are appreciable effect on product molecular weight.

机译：我们报告成功利用2、2'-偶氮二异丁腈（AIBN）作为自由基引发剂，在15至27MPa的压力下，在超临界二氧化碳（scCO_2）中成功沉积了甲基丙烯酸2-羟乙酯（HEMA）的沉淀聚合反应。研究了反应压力，引发剂浓度，单体浓度，反应温度和反应时间的影响。通过扫描电子显微镜（SEM）的分析表明，在所有反应条件下，在没有稳定剂的情况下的聚合导致形成部分聚结的颗粒的大聚集体，直径约为1-10mm。凝胶渗透色谱法（GPC）分析表明，对于所研究的反应压力，引发剂浓度，单体浓度，反应温度和反应时间，对产物分子量有显着影响。

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来源
《Polymers for advanced technologies》 |2012年第3期|共5页
作者
Xiao-Hu Wang; Li-Qin Cao; Li-Juan Zhang; Ji-De Wang;
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正文语种 eng
中图分类高分子化学（高聚物）;
关键词
2-hydroxyethyl methacrylate; Radical polymerization; Precipitation polymerization; Molecular weight; Supercritical carbon dioxide;

机译：甲基丙烯酸2-羟乙酯;自由基聚合;沉淀聚合;分子量;超临界二氧化碳;

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1. Precipitation polymerization of 2-hydroxyethyl methacrylate in supercritical carbon dioxide [J] . Xiao-Hu Wang, Li-Qin Cao, Li-Juan Zhang, Polymers for advanced technologies . 2012,第3期

机译：甲基丙烯酸2-羟乙酯在超临界二氧化碳中的沉淀聚合
2. Stabilizer architectures based on fluorinated random and block copolymers for the dispersion polymerization of 2-hydroxyethyl methacrylate in supercritical carbon dioxide [J] . Hullathy Subban Ganapathy, Ha Soo Hwang, Min Young Lee, Journal of Materials Science . 2008,第7期

机译：基于氟化无规和嵌段共聚物的稳定剂体系结构，用于甲基丙烯酸2-羟乙酯在超临界二氧化碳中的分散聚合
3. Stabilizer architectures based on fluorinated random and block copolymers for the dispersion polymerization of 2-hydroxyethyl methacrylate in supercritical carbon dioxide [J] . Ganapathy HS, Hwang HS, Lee MY, Journal of Materials Science . 2008,第7期

机译：基于氟化无规和嵌段共聚物的稳定剂体系结构，用于甲基丙烯酸2-羟乙酯在超临界二氧化碳中的分散聚合
4. PREPARATION OF INTERPENETRATING POLYMER NETWORKS OF 2-HYDROXYETHYL METHACRYLATES AND POLY(DIMETHYL SILOXANE) IN SUPERCRITICAL CARBON DIOXIDE [C] . Martin H. Alm, Marie Jensen European Meeting on Supercritical Fluids Reactions, Materials and Natural Products Processing . 2005

机译：超临界二氧化碳中2-羟乙基甲基丙烯酸甲酯和聚（二甲基硅氧烷）的互穿的聚合物网络的制备
5. The crosslink polymerization of styrene and methyl methacrylate in supercritical carbon dioxide. [D] . Laurich, Jaclyn C. 1998

机译：苯乙烯和甲基丙烯酸甲酯在超临界二氧化碳中的交联聚合。
6. Insight into the Intermolecular Interaction and Free Radical Polymerizability of Methacrylates in Supercritical Carbon Dioxide [O] . Rui-Qing Li, Ming-Xi Wang, Qi-Yu Zhang, 2020

机译：洞察甲基丙烯酸酯在超临界二氧化碳中的分子间相互作用和自由基可聚合性
7. RAFT polymerization in supercritical carbon dioxide based on an induced precipitation approach: Synthesis of 2-ethoxyethyl methacrylate/acrylamide block copolymers [O] . Gerard Hawkins, Per B. Zetterlund, Fawaz Aldabbagh 2015

机译：基于诱导沉淀方法的超临界二氧化碳中的筏聚合：2-乙氧基甲基丙烯酸甲酯/丙烯酰胺嵌段共聚物的合成

Precipitation polymerization of 2-hydroxyethyl methacrylate in supercritical carbon dioxide

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