|
|||||
|
|
Dielectric properties of some photo crosslinking acrylate ester copolymers |
|
| Authors: | SH El-Hamouly SM Hamza KN Abd El-Nour |
| Institution: | Department of Polymer Chemistry, Faculty of Science, El-Menoufia University, Egypt Microwave Physics Department, National Research Center, Dokki, Cairo, Egypt |
| Abstract: | Photo crosslinking due to the photo polymerization of unsaturated acrylic side-groups attached to copolymers of glycidyl methacrylate and methyl methacrylate (GMA-MMA) by reaction with acrylic acid in the presence of benzoin methyl ether as photolabile initiator has been investigated. The composition of these copolymers based on (GMA-MMA, 30:70) were determined by 1H] NMR spectroscopy. The reactivity ratios for the GMA-MMA system were determined using the Kelen-Tüdös method. The dielectric properties of copolymers based on GMA-MMA acrylate ester (30:70) and homopolymers of MMA in combination with different polyfunctional acrylate ester monomers before and after exposure to UV irradiation have been studied in a solid state matrix, over a frequency range of 100 Hz to 50 kHz and at temperatures in the range 20–70°C. |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ | |