𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Gelation in the copolymerization of styrene with oligoglycol dimethacrylates

✍ Scribed by Akira Matsumoto; Syuichi Yonezawa; Masayoshi Oiwa

Book ID
103074210
Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
199 KB
Volume
24
Category
Article
ISSN
0014-3057

No coin nor oath required. For personal study only.

✦ Synopsis

The gelation behaviour in the copolymerization of styrene with oligoglycol dimethacrylates (OGMA) has been examined in benzene at 50 Β° and compared with the thermal copolymerization results in toluene at 95 Β°. Gelation was delayed by changing the number (n) of oxyethylene units of OGMA from 1 to 2, but it was accelerated at n = 9. The gel-point conversion decreased with increasing n. The rate of polymerization was almost independent of the cross-linkers and no Trommsdorff effect was observed. These results are in a remarkable contrast with those for the thermal copolymerization, but in line with the results for the copolymerization of methyl mechacrylate with OGMA.

πŸ“œ SIMILAR VOLUMES

Solvent effect in the copolymerization o
Solvent effect in the copolymerization of methyl methacrylate with oligoglycol dimethacrylate
✍ Akira Matsumoto; Hideaki Matsuo; Hiroyuki Ando; Masayoshi Oiwa πŸ“‚ Article πŸ“… 1989 πŸ› Elsevier Science 🌐 English βš– 225 KB

Methyl methacrylate was radically copolymerized with oligoglycol dimethacrylate using dioxane or n-butyl acetate as good and poor solvents, respectively. The delay between actual gel point and the theoretical one was much larger in a good solvent. The primary chain length, closely related to gelatio

Gelation in the copolymerization of meth
Gelation in the copolymerization of methyl methacrylate with trimethylolpropane trimethacrylate
✍ Akira Matsumoto; Hiroyuki Ando; Masayashi Oiwa πŸ“‚ Article πŸ“… 1989 πŸ› Elsevier Science 🌐 English βš– 343 KB

Three-dimensional network formation in the copolymerization of methyl methacrylate with trimethylolpropane trimethacrylate (TMPMA) is discussed. In order to clarify structural features of the copolymer, the cyclization constant of TMPMA was estimated to be K c = 4.2 mol/l and thus, the TMPMA units i

Gelation and Hollow Particle Formation i
Gelation and Hollow Particle Formation in Nitroxide-Mediated Radical Copolymerization of Styrene and Divinylbenzene in Miniemulsion
✍ Per B. Zetterlund; Yuichi Saka; Masayoshi Okubo πŸ“‚ Article πŸ“… 2008 πŸ› John Wiley and Sons 🌐 English βš– 290 KB

## Abstract Network formation in the nitroxide‐mediated cross‐linking copolymerization of styrene and divinylbenzene (3 or 8.2 mol‐% relative to total monomer) using the nitroxide 2,2,6,6‐tetramethylpiperidinyl‐1‐oxy (TEMPO) at 125 °C can proceed markedly differently in aqueous miniemulsion compare