链转移常数

MMA与SBS接枝共聚合的链转移常数

Study on Chain Transfer Constant of Graft Copolymerization of SBS and Methyl Methacrylate

测定了MMA与SBS接枝共聚合的链转移常数，讨论了引发剂浓度、温度及溶剂对链转移常数的影响。

In this paper , chain transfer constant of graft copolymerization of SBS and MMA was determined . The influence on chain transfer constant of initiator concentration , reaction temperatures and solvents was discussed .

环氧丙烷链转移常数及其经验式

On the Chain-transfer Constant of Propylene Oxide and the Empirical Formula for Its Calculation

从聚合物分子量及聚合动力学参数计算链转移常数

Calculation of chain transfer constants from the molecular weights of polymers and the kinetic parameters of polymerization

试验结果表明提高反应温度和选择适当溶剂可以使链转移常数增大，有利于接枝反应的进行，提高接枝效率。

The results show that chain transfer constant depends on reaction temperature and solvent . High temperature favors graft copolymerization , and enhances the efficiency of grafting .

运用该模型和实验数据，可以估算链转移速率常数，并得到链转移速率常数与温度关系的阿累尼乌斯方程，求得活化能为116kJ。

The relationship between chain transfer rate constant and temperature was obtained from the experimental data .

链增长速率常数和链转移速率常数均随聚合温度的升高而增大。

The values of k , chain propagation rate constant ( kp ) and chain transfer rate constant ( Ktr ) increased with the increase of polymerization temperature .

此外，论文还研究了甲基丙烯酸羟丙酯催化链转移聚合过程中催化剂的表观链转移常数、聚合物的分子量及其分布随反应进行的变化。

The evolution of chain transfer constant of the catalyst and the molecular weight and PDI of the polymer during the catalytic chain transfer polymerization of 2-hydroxypropyl methacrylate was also studied .

基于催化链转移聚合法MMA/MPS共聚物的制备及其表观催化链转移常数测定的研究

Preparation of PMMA-co-PMPS copolymers via catalytic chain transfer polymerization technique and evaluation of their apparent chain transfer constants

采用聚合瓶反应考察了ROK、2G和温度对链转移反应的影响，并求取了链转移次数、链转移常数、链转移速率常数及链转移反应活化能。

Effects of ROK , 2G and polymerizing temperature were studied . The chain transfer times and constant , chain transfer rate constant and the corresponding activation energy were also calculated .