Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi

Effect of Styrene-Butadiene-Styrene Block Copolymer on the Kinetic of Thermooxidative Degradation of High-Impact Polystirene (CROSBI ID 82860)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Holjevac Grgurić, Tamara ; Rek, Vesna ; Jelčić, Želimir Effect of Styrene-Butadiene-Styrene Block Copolymer on the Kinetic of Thermooxidative Degradation of High-Impact Polystirene // Journal of macromolecular science. Pure and applied chemistry, A35 (1998), 7-8; 1375-1384. doi: 10.1080/10601329808002126

Podaci o odgovornosti

Holjevac Grgurić, Tamara ; Rek, Vesna ; Jelčić, Želimir

engleski

Effect of Styrene-Butadiene-Styrene Block Copolymer on the Kinetic of Thermooxidative Degradation of High-Impact Polystirene

The stability of polyolefins and their blends is very important for their practical use under high temperatures. The effect of styrene-butadiene- styrene blockcopolymers on the intensity of the thermooxidative degradation of HIPS can be followed through kinetic parameters. In styrene- butadiene soft, polybutadiene phase (PB), and hard, polystyrene phase (PS have a different sensibility on thermal degradation. The thermooxidative stability of high impact polystyrene (PS-HI) and blends of PS-HI and styrene-butadiene-styrene copolymer, (SBS) were investigated. The investigation were done by isothermal DSC analysis. The kinetic parameters of the thermooxidative degradative process: the reaction rate constants, the reaction orders, and the activation energies have been determined. The total area under the exothermic curve was used to calculate the isothermal heat degradation. On the basis of the heat of the thermooxidative degradation the conversion (alpha) and the rate of the thermooxidative degradation (dalpha/dt) have been obtained. The experimental data have been tested with kinetic model for autocatalytic reactions: dalpha/dt (k alpham(1-(alpha)n. The activation energy has been determined by Arrhenius equation. On the basis of the calculated kinetic parameters the order of thermooxidative stability of the investigated system has been obtained. The experimental data have a good agreement with the autocatalytic model.

activation energy ; exotherm DSC curves ; high impact polystyrene ; styrene-butadine-styrene block copolymer ; thermooxidative degradation

Glavni autori: Tamara Holjevac Grgurić i Vesna Rek

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

A35 (7-8)

1998.

1375-1384

objavljeno

1060-1325

1520-5738

10.1080/10601329808002126

Povezanost rada

Kemijsko inženjerstvo

Poveznice
Indeksiranost