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首页> 外文期刊>Journal of Applied Polymer Science >Suspension polymerization of 2-pyrrolidone in the presence ofCO(2)and organic promoters
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Suspension polymerization of 2-pyrrolidone in the presence ofCO(2)and organic promoters

机译：悬浮聚合的2-吡咯烷酮在ofco（2）和有机启动子的存在中

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摘要

Polybutyrolactam (PBL), known as polyamide 4 with high performance, was synthesized using CO(2)by combining organic promoters in suspension to overcome the limitations of traditional bulk polymerization and improve the thermal stability. Upon increasing the amount of paraffin oil or sodium dodecyl sulfate, which proved to be the most suitable medium and dispersant, or increasing the concentration of alkaline catalyst and CO2, or the rate of stirring, the inherent viscosity increased first and then decreased, while the yield did not follow the same trend. Adding 18-crown-6 ether greatly increased the yield but decreased the inherent viscosity, contrary to the trend that was reported for bulk polymerization. The yield and inherent viscosity both increased with increasing concentration of tetramethyl ammonium chloride. PBL particles were loosely structured and presented improved thermal stability compared with any other report on suspension polymerization. This study provides a promising method to produce PBL with high performance on a large scale.
机译：为克服传统本体聚合的局限性，提高热稳定性，以CO（2）为原料，在悬浮液中加入有机助剂，合成了高性能的聚丁内酰胺（PBL）聚酰胺4。增加石蜡油或十二烷基硫酸钠的用量（这被证明是最合适的介质和分散剂），或增加碱性催化剂和CO2的浓度，或增加搅拌速度，特性粘度先增加后降低，而产率没有遵循相同的趋势。加入18-冠-6醚可显著提高产率，但降低特性粘度，与本体聚合的趋势相反。随着四甲基氯化铵浓度的增加，产率和特性粘度均增加。PBL颗粒结构松散，与其他任何关于悬浮聚合的报道相比，其热稳定性有所提高。本研究为大规模生产高性能PBL提供了一种有前途的方法。

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