Pregledni rad
Kinetic model of free radical polymerization using bifunctional peroxide initiator
Ivana ŠOLJIĆ
; Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, Zagreb
Ante JUKIĆ
; Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, Zagreb
Zvonimir JANOVIĆ
; Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, Zagreb
Sažetak
Most of the synthetic polymeric materials are produced by the free radical initiated polymerization. However, due to the nature of its mechanism it is not possible to simultaneously obtain high polymerization rates and high molecular mass in bulk, suspension or solution processes. Recently, it was shown that in the bulk polymerization of styrene this problem can be overcome by using initiators with two peroxide groups of different thermal stabilities. Such initiators undergo a sequential decomposition, which generates primary radicals continuously as polymerization proceeds, giving simultaneously, at suitable reaction conditions, high monomer conversion, high molecular weight and narrower molecular weight distribution. Due to these advantages, the polymerization reaction time can be significantly reduced with no need for any modification of reactor equipment. In the present study, the reaction mechanisms and kinetic models of free radical polymerization using monofunctional and bifunctional initiators were presented and compared.
Ključne riječi
bifunctional peroxide initiator; free radical polymerization; kinetic model
Hrčak ID:
25528
URI
Datum izdavanja:
18.7.2008.
Posjeta: 1.940 *