Elasticity of urethane networks
β Scribed by D.J Walsh; J.S Higgins; R.H Hall
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 421 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0032-3861
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Polyisobutylene-based model urethane networks have been prepared by crosslinking liquid a,odi(hydroxyl)polyi.vobutylenes, i.e., PIBdiols carrying exactly two =CH20H functions, F. = 2.0 \* 0.1, and rather narrow molecular weight distributions, MJM. = 12-1.6, with tritriphenylmethyl isocyanate HC&pCs
Layer network formation of poly(styrene-alt-n-octadecylmaleimide) in dodecane is investigated. It is shown that the polymer in the bulk exhibits lamellar structures of alternated alkane side-chain and main-chain layers. Adding dodecane into the polymer separates the polymer layers, increases the mea
Creep recovery of acrylate urethane/acrylate networks was investigated as a function of time and temperature. An important outcome was the capacity for superimposition of experimental data obtained at various temperatures. Arrhenius type temperature dependence of the creep recovery was also observed