Naslov
Utjecaj dodataka na toplinsko ponašanje mješavina PVC+MBS
(Influence of additives on thermal behaviour of PVC/MBS blends)

Autori
Andričić, Branka ; Kovačić, Tonka ; Klarić, Ivka

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Polimerni materijali i dodatci polimerima / Čatić, Igor - Zagreb : Društvo za plastiku i gumu, 2002, 47-54

Skup
Polimerni materijali i dodatci polimerima

Mjesto i datum
Zagreb, Hrvatska, 14.11.2002. - 15.11.2002

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
diferencijalna pretražna kalorimetrija; kinetička shema; mješavine PVC+MBS; mješljivost; termogravimetrija
(diferential scaning calorimetry; kinetic scheme; miscibility; PVC+MBS blends; thermogravimetry)

Sažetak
Thermal analysis (DSC and TG) of specifically prepared nonstabilized, stabilized and commercially available PVC+MBS blends was carried out in order to determine the influence of additives on glass transition and thermal degradation of PVC in the blends. Heat stabilizer and processing aids lower the glass transition of PVC in the blends. According to the glass transition measurements, it seems that in the commercial blends the partial miscibility of PVC and PMMA from MBS was achieved. The activation energy and its dependence on conversion of first nonisothermal oxidative degradation step were determined applying Flynn-Wall-Ozawa isoconversional method. By increasing the number of blend components the kinetic scheme of process become more complex resulting with the change of activation energy on conversion.

Izvorni jezik
Hrvatski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA