𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Kinetic model of living radical polymerization

✍ Scribed by Deyue Yan; Hong Jiang; Xunpei Fan

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
357 KB
Volume
5
Category
Article
ISSN
1022-1344

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

This work studies the kinetics of living radical polymerization by means of both the nonsteady state approach and the quasi‐stationary state method. Expressions for the numberand weight‐average degress of polymerization and the polydispersity index were derived. Numerical results show that the concentration of residual initiator seriously influences the polydispersity index of the resulting polymer. The calculated outcomes of the non‐steady state approach are evidently different from those of the quasi‐stationary state method when the magnitude of the rate constant of termination is comparable with that of the propagation rate constant, and the difference becomes negligible if the rate constant of the termination (k~t~) is much larger than that of propagation (k~p~). The polydispersity index of the resulting polymer increases with decreasing ratios of k~t~ to k~p~ or M~O~ to I~O~ (initial concentrations of monomer and initiator).

📜 SIMILAR VOLUMES

Kinetics of living radical polymerizatio
Kinetics of living radical polymerization
✍ Atsushi Goto; Takeshi Fukuda 📂 Article 📅 2004 🏛 Elsevier Science 🌐 English ⚖ 964 KB

This review covers fundamental kinetic features of living radical polymerization (LRP). Theories on polymerization rate R p and polydispersity index (PDI) and experimental investigations into individual LRP systems are summarized. The presence of bimolecular termination, which is unavoidable in LRP

Kinetics of “living” free radical polyme
Kinetics of “living” free radical polymerization
✍ Alessandro Butté; Giuseppe Storti; Massimo Morbidelli 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 141 KB

&&Living'' free-radical polymerization (LFRP) of styrene is usually performed following two di!erent reaction procedures: by TEMPO-mediated LFRP or by atom transfer radical polymerization. The main di!erence between the previous two processes is related to how the exchange between the active and the

A mathematical model of dispersion radic
A mathematical model of dispersion radical polymerization kinetics
✍ A. V. Chernyshev; A. E. Soini; I. V. Surovtsev; V. P. Maltsev; E. Soini 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 149 KB 👁 2 views

A mathematical model of the basic polymerization kinetic scheme, that involves only initiation, propagation, and termination reactions, has been developed. It was assumed that the propagation and termination rate constants are independent of the chain length. It has been shown that the model predict

Modeling of “living” free-radical polyme
Modeling of “living” free-radical polymerization processes. II. Tubular reactors
✍ Min Zhang; W. Harmon Ray 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 220 KB 👁 2 views

## Abstract A tubular reactor model for “living” free‐radical polymerization is developed in this study. The model may be used as a tool to design efficient processes for tailored polymers from “living” free‐radical polymerization. Examples presented include preparing bimodal polymers and copolymer