𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Ring-opening-closing alternating copolymerization of 2-methyl-2-oxazoline with N-methyldiacrylamide

✍ Scribed by Jun-ichi Kadokawa; Yoshitaka Matsumura; Shiro Kobayashi

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
345 KB
Volume
195
Category
Article
ISSN
1022-1352

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

This paper describes a new ring‐opening‐closing alternating copolymerization (ROCAC) of 2‐methyl‐2‐oxazoline (five‐membered cyclic imino ether, 1) with N‐methyldiacrylamide (2). The reaction of a 1 : 1 monomer feed ratio proceeded without any added catalyst to give an alternating copolymer 3 having two structural units formed by ring‐opening and ring‐closing (cyclization). The structure of copolymer 3 was determined by ^1^H, ^13^C NMR, and IR spectroscopies. The extent of cyclization was at most 65%. The copolymerization was reasonably explained by a mechanism of propagation via zwitterion intermediates.

📜 SIMILAR VOLUMES

2-Perbromomethyl-2-oxazoline: a novel tr
2-Perbromomethyl-2-oxazoline: a novel trifunctional initiator for the ring-opening polymerization of 2-methyl-2-oxazoline
✍ Tushar Kanti Bera; Swaminathan Sivaram 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 348 KB

Polymerization of 2-methyl-2-oxazoline was carried out using a trifunctional initiator, 2-perbromomethyl-2-oxazoline. The degree of polymerization (DP) of the resulting polymer was very close to the feed mole ratio of the monomer to initiator. The number-average molecular weight a, increased linearl

Synthesis of New Hydrogels by Copolymeri
Synthesis of New Hydrogels by Copolymerization of Poly(2-methyl-2-oxazoline) Bis(macromonomers) and N-Vinylpyrrolidone
✍ Juan C. Rueda; Hartmut Komber; Juan C. Cedrón; Brigitte Voit; Galina Shevtsova 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 139 KB

## Abstract New non‐ionic hydrogels were synthesized by radical homopolymerization of vinyl end‐functionalized poly(2‐methyl‐2‐oxazoline) bis(macromonomers), or by radical copolymerization of these bis(macromonomers) with __N__‐vinyl‐2‐pyrrolidone (NVP). The poly(2‐methyl‐2‐oxazoline) bis(macromono

Study of free-radical copolymerization o
Study of free-radical copolymerization of N-isopropylacrylamide with 2-acrylamido-2-methyl-1-propanesulphonic acid
✍ Chi Zhang; Allan J. Easteal 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 108 KB 👁 1 views

## Abstract The free‐radical copolymerization of __N__‐isopropylacrylamide and 2‐acrylamido‐2‐methyl‐1‐propanesulphonic acid at varying comonomer mole ratios was studied at 70°C. The extent of conversion was determined as a function of time and comonomer mixture composition, and copolymer compositi

Synthesis of amphiphilic graft copolymer
Synthesis of amphiphilic graft copolymers by ring-opening polymerization of 2-methyl-2-oxazoline initiated by poly[isobutene-co-(p,m-chloromethylstyrene)] macroinitiators
✍ Oskar Nuyken; Juan Rueda Sanchez; Brigitte Voit 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 361 KB

## Abstract poly[isobutene‐__co__‐(__p__,__m__‐chloromethylstyrene)]‐__graft__‐poly(2‐methyl‐2‐oxazoline) graft copolymers (GP) were prepared by the “grafting from” method throught the cationic polymerization of 2‐methyl‐2‐oxazoline (MeOXA) initiated by a statistical copolymer is isobutene and chlo