โ Scribed by P. Bajaj; G. Nanababu
No coin nor oath required. For personal study only.
Styrene (monomer-I) has been copolymerized with [(2-methacryloyloxy)ethoxy]trimethylsilane. MesSiOCH2--CH2OOCC=CH 2, at temperatures between 60 and 100 ยฐ using benzoylperoxide I Me as initiator. The compositions of the copolymers have been determined by silicon estimation; the reactivity ratios were calculated by the Fineman Ross method. Arrhenius parameters have been derived.
The difference between the activation energies, (Etl El2) favour self-propagation for the styrene radicals, whereas AtrIAl2 favours cross-propagation. In the case of silane radicals, (E22 E2~) favours crosspropagation but A2,/A,~ favours self-propagation. The intrinsic viscosities and the thermal behaviours of the copolymers were also studied. * St, Styrene; 2-MAETMS, [2-(methacryloyloxy)ethoxy]-trimethylsilane; t IDT, initial decomposition temperature; Dmax, maximum decomposition temperature; ff IPDT, integral procedural decomposition temperature.
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