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罗迪克桑的链传递动力学^® A1 RAFT/MADIX代理的链传递动力学

Mathias Destarac¹, Aymeric Guinaudeau^1,2, Stéphane Mazières¹

¹Laboratoire SOFTMAT, CNRS UMR 5623, University of Toulouse, University Toulouse III-Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex 9, France.

Molecules (Basel, Switzerland)

|January 8, 2025

概括

作为RAFT/MADIX剂的Rhodixan® A1使得可以在工业规模生产区块共聚合物添加剂. 它在各种单体中实现了预先确定的分子量,转移系数因单体类型而异.

科学领域:

聚合物化学聚合物化学
材料科学材料科学材料科学

背景情况:

块共聚合物添加剂的工业规模生产对于水性配方至关重要.
包括RAFT/MADIX在内的可逆失活激进聚合 (RDRP) 技术可以控制聚合物架构.
罗迪克桑® A1 (O-乙烯-S-1-甲氧化碳乙烯-乙烯) 乙二碳酸盐) 是一个关键的RAFT/MADIX药物.

研究的目的:

评估Rhodixan® A1在生产块共聚合物添加剂中的有效性.
为了确定Rhodixan® A1与各种单体类的链转移系数.
评估对聚合物分子质量和分散性的控制.

主要方法:

使用了25种不同的 styrenic,acrylate 和 acrylamide 单体.
通过实验确定了链转移系数 (C_tr) 和链际转移系数 (C_tr,PnXA1).
在高单体转换下分析了聚合物分子量和分散性.

主要成果:

对Rhodixan® A1的连锁转移系数较低,范围为0.6至3.8.
转移系数按照下面的顺序进行: styrenics < 烯酸盐 < 烯胺.
预先确定分子重量的聚合物得到了分散度与C_tr,PnXA1相成比例.

结论:

Rhodixan® A1 促进了具有受控分子量的块共聚合物的工业规模合成.
使用Rhodixan® A1的RAFT/MADIX技术可用于从具有不同反应性的单体中制造复杂的共聚物.
这种药物对结合和未结合的单体都有效,扩大了其适用性.

关键词:

飞机飞行业 (RAFT) 是一个飞行业.链接传输链接传输链接链接传输链接运动学的动力学.激进的聚合方式.亚酸盐 (xanthate) 是一种

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