Polymers for information storage systems. II. Polymerization kinetics for preparation of highly crosslinked polydimethacrylates
✍ Scribed by Christopher N. Bowman; Nikolaos A. Peppas
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 449 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
Polymers of ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, and tetraethylene glycol dimethacrylate were prepared by photoinitiated polymerizations in the presence of 2,2-dimethoxy-2-phenyl-acetophenone at 27°C. The reactions led to highly crosslinked polymeric networks. The volume shrinkage observed during polymerization was a function of the number of ethylene glycol units in the dimethacrylate monomer. The kinetic rate constants of polymerization, as determined from the photopolymerization characteristics using a dilatometric technique, were again dependent on the number of ethylene glycol units in the monomer. The importance of these results on the crosslinked structure of the prepared networks is discussed.