Gel permeation chromatographic determination of activation rate constants in nitroxide‐controlled free radical polymerization, 1. Direct analysis by peak resolution
Gel permeation chromatographic determination of activation rate constants in nitroxide‐controlled free radical polymerization, 1. Direct analysis by peak resolution
复制标题
凝胶渗透色谱法测定硝基氧控制的自由基聚合中的活化速率常数，1. 通过峰分辨率直接分析
DOI：
10.1002/marc.1997.030180808
复制
发表时间：
1997
影响因子：
4.6
通讯作者：
T. Miyamoto
中科院分区：
文献类型：
--
作者：
A. Goto;T. Terauchi;T. Fukuda;T. Miyamoto
以聚苯乙烯（PS）与2，2，6，6-四甲基哌啶-1-氧基（克里思）的加成物为探针，自由基引发剂叔丁基过氧化氢为引发剂，采用凝胶渗透色谱峰分辨法测定了苯乙烯聚合反应中PS与TEMPO形成的CON键均裂的解离速率常数kd。结果由阿克里尼乌斯方程给出，kd = A exp（−E/（RT）），其中A = 3.0 × 1013 s−1，E = 124 kJ · mol−1。
The dissociation rate constant kd related to the homolytic cleavage of the CON bond formed between a polystyrene (PS) and 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO) is determined by adopting the gel permeation chromatography peak-resolution method to the styrene polymerization with a PS-TEMPO adduct as a probe and the radical initiator tert-butyl hydroperoxide. The result was given by the Arrhenius equation, kd = A exp(−E/(RT)) with A = 3.0 × 1013 s−1 and E = 124 kJ · mol−1.