Copolymerization of Acrylonitrile with [(2-Methacryloyloxy)alkoxy ]trimethyl Silanes
| Main Authors: | P. BAJAJ, D. C. GUPTA |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 1982
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6351414 |
Daftar Isi:
- Department of Textile Technology, Indian Institute of Technology, Delhi, New Delhi-110 016 Acrylonitrile (AN) was copolymerized with ((2-methacryloyloxy)ethoxy)trimethylsilane (2-MAETMS) and ((2-methacryloyloxy)propoxy)trimethylsilane (:2-MAPTMS) in dimethylformamide and dimethylsulfoxide at temperatures between 50o and 70° nsing azoblslsobutyronitrile(AmN) as Initiator. Tbe copolymer composition was determlued by silicon a.timatloa and reactivity ratios were calculated by the Kelen-Tudos method. In both tbe systems, r1(AN) and r2(2-MAETMS/2-MAPTMS) are higher In DMF compared to the values in DMSO. Arrhenius parameters were derived for AN-2-MAETMS system. Tbe dift'erence between the activation energies (E11-E12) favour self-propagation for the acrylonitrile radical, whereas A11/A12 favours crosspropagation. In case of 2-MAETMS radical, E22-E21 favoun cross-propagatlou but A22/ A21 favours self-propagation. The Influence of the comonomers on some of thC' basic properties of copolymers like 10lubility, Intrinsic vl&coslty, softening and glass transitions have also been studied.