𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Copolymerization of methyl acrylate with styrene using triphenylstibonium 1,2,3,4-tetraphenylcyclopentadienylide as a novel radical initiator

✍ Scribed by Upasana Mohan; Anuradha Varshney

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
124 KB
Volume
103
Category
Article
ISSN
0021-8995

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The free‐radical copolymerization of methyl acrylate with styrene initiated by triphenylstibonium 1,2,3,4‐tetraphenylcyclopentadienylide under nitrogen blanket at (60 ± 0.1)°C in 1,4,dioxane for 2 h has been carried out. The kinetic expression is R~p~ ∝ [I]^0.14^ [MA]^0.70^ [Sty]^0.75^. The system follows nonideal kinetics due to primary radical termination as well as degradative chain transfer reactions. The overall activation energy is 42 kJ mol^−1^. The reactivity ratios calculated from Kelen–Tüdos method for r~1~ (MA) and r~2~ (Sty) are 0.16 ± 0.01 and 0.028 ± 0.005 respectively. These values suggest the alternating nature of the copolymer. The ylide dissociated to form a phenyl radical, which brings about copolymerization of methyl acrylate with styrene. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 1731–1736, 2007

📜 SIMILAR VOLUMES

Controllable radical copolymerization of
Controllable radical copolymerization of styrene and methyl methacrylate using 1,1,2,2-tetraphenyl-1,2-bis(trimethylsilyloxy) ethane as initiator
✍ Zhenrong Guo; Genjin Yang; Decheng Wan; Junlian Huang 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 198 KB

## Abstract Copolymerization of styrene (St) and methyl methacrylate (MMA) was carried out using 1,1,2,2‐tetraphenyl‐1,2‐bis (trimethylsilyloxy) ethane (TPSE) as initiator; the copolymerization proceeded via a “living” radical mechanism and the polymer molecular weight (__M__~__w__~) increased with

Synthesis of poly(ϵ-caprolactone)-block-
Synthesis of poly(ϵ-caprolactone)-block-poly(n-butyl acrylate) by the combination of ring-opening polymerization and atom transfer radical polymerization with Ti[OCH2CCl3]4 as a difunctional initiator. II. Synthesis and characterization of poly(ϵ-caprolactone)-block-poly(n-butyl acrylate) copolymers
✍ Peichun Li; Zhean Xia; Amar Zerroukhi; Jianding Chen; Yvan Chalamet; Thomas Jean 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 403 KB 👁 1 views

## Abstract The kinetics and controllability of the Ti[OCH~2~CCl~3~]~4~‐initiated atom transfer radical polymerization (ATRP) of __n__‐butyl acrylate were investigated. Then, with Ti[OCH~2~CCl~3~]~4~ as the initiator, poly(ϵ‐caprolactone)‐__block__‐poly(__n__‐butyl acrylate) (PCL‐__b__‐PBA) copolym

In the electron impact mass spectra of N
In the electron impact mass spectra of N,N′-diaryl-1,3-phenylenediamines, recorded under conditions generating the molecular ion as a base peak, the most important step involve a β-aromatic cleavage with H rearrangement, leading to the expulsion of a neutral arylamine; this fact can be used in meta isomer identification since for the corresponding 1,2- and 1,4-isomers the expulsion of an aryl radical is a competitive process
✍ Nicolae Palibroda; Castelia Cristea; Ioan A. Silberg; Ileana Chirtoc 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 20 KB 👁 3 views