Validation of an Extended Kinetic Model of Free-Radical N-Vinylpyrrolidone Polymerization

IF 1.8 4区 工程技术 Q3 ENGINEERING, CHEMICAL
Stefan Welzel, Jule Burmeister, Oliver Höppchen, Ulrich Nieken
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引用次数: 0

Abstract

To predict the polymer properties produced by free-radical polymerization of N-vinylpyrrolidone (NVP) in aqueous solution a detailed kinetic model has been developed. The kinetic model allows to calculate the chain length distribution, the number of branching points, and the number of terminal double bonds (TDB). The latter is accounted for since TDBs are a precondition for branching. While monomer conversion can be predicted sufficiently using independently determined rate constants for propagation and termination, here the predictions of structural properties by a newly developed extended kinetic model to experimental findings are compared. Polymer produced in a continuous stirred tank reactor is analyzed by gel permeation chromatography (GPC), field flow fractionation (FFF), and high-pressure liquid chromatography (HPLC).

Abstract Image

自由基N-乙烯基吡咯烷酮聚合扩展动力学模型的验证
为了预测n -乙烯基吡咯烷酮(NVP)在水溶液中自由基聚合产生的聚合物性能,建立了详细的动力学模型。动力学模型允许计算链长分布、分支点数目和末端双键数目(TDB)。由于tdb是分支的先决条件,所以考虑了后者。虽然使用独立确定的传播和终止速率常数可以充分预测单体转化,但本文将新开发的扩展动力学模型对结构性质的预测与实验结果进行了比较。采用凝胶渗透色谱法(GPC)、场流分馏法(FFF)和高压液相色谱法(HPLC)对连续搅拌釜反应器中生产的聚合物进行分析。
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来源期刊
Macromolecular Reaction Engineering
Macromolecular Reaction Engineering 工程技术-高分子科学
CiteScore
2.60
自引率
20.00%
发文量
55
审稿时长
3 months
期刊介绍: Macromolecular Reaction Engineering is the established high-quality journal dedicated exclusively to academic and industrial research in the field of polymer reaction engineering.
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