Abstract
Bisacrylate and bisacrylamide derivatives of poly-teramethylene ether-glycol (PTG) were prepared. The oligomers having two vinyl groups at both ends were copolymerized with methylmethacrylate (MMA) and acrylonitrile (AN). Copolymer of PTG-bisacrylamide with AN was found to have a very high tensile strength such as 350 kg/cm2. The tests on dynamic viscoelasticity showed that the storage compliance of the block copolymer with MMA had a high dependency on temperature, i. e., a high peak of tan δ was observed between room temperature and 100°C. On the other hand, the peak of tan δ on the block copolymer with AN was low and appeared at higher temperature than the copolymer with MMA.
From the stress-strain curves obtained at room temperature, the block copolymer with MMA was considered to behave like rubber and that with AN like plastic material
