Conversions of polymethyl(meth)acrylates on exposure to aminoalcohols and amines and the influence of the conditions of the interaction on the composition of the copolymers
β Scribed by S.V. Khitrin; S.I. Bagayev; N.V. Kolotilova
- Book ID
- 116049729
- Publisher
- Elsevier Science
- Year
- 1990
- Weight
- 395 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0032-3950
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π SIMILAR VOLUMES
The dependence of the rotation of the mesogenic unit around its long axis (prelaxation) on the actual mesophase in liqid crystalline polymethac ylates and polyacrylates was studied by dielectric spectroscopy in the frequency range from 10-2Hz to 106Hz and in a temperature range from 170 K to 430 K.
Ionomers based on propylene-acrylic acid copolymer have been prepared and their rheological behavior studied. With different cations the melt viscosity a t any shear rate increases as tributylamine salt < acid < zinc salt < sodium salt. Similarly, the activation energies for viscous flow follow the