Naslov
The Pyrolysis - Gas Chromatography/Mass Spectrometry Study of flame-retarded high-impact polystyrene

Autori
Katančić, Zvonimir ; Dimitrov, Nino ; Hrnjak-Murgić, Zlata

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

Izvornik
Proceedings of international conference MATRIB 2010 / Schauperl, Zdravko ; Šnajdar, Mateja - Zagreb : Hrvatsko društvo za materijale i tribologiju (HDMT), 2010, 180-187

ISBN
978-953-7040-17-8

Skup
MATRIB 2010

Mjesto i datum
Vela Luka, Hrvatska, 23.06.2010. - 25.06.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
flammability of polymers ; pyrolysis decomposition ; polystyrene ; flame retardants
(gorivost polimera ; pirolitička razgradnja ; polistiren ; usporivači gorenja)

Sažetak
High-impact polystyrene (HIPS) is widely used for electrical appliances, electronic instruments and building materials. Recently, the degradation of flame retarded plastics got into the focus of interest due to the increasing role of recycling of plastic waste. It is well known that polybrominated flame retardant that were mostly used may produce brominated dioxins during combustion. The oxidative degradation behaviour of brominated flame retardants is of interest since flame retarded plastics may be disposed in municipal waste incinerators or may be involved in accidental fires. It has been demonstrated that various analytical pyrolysis techniques are suitable for the analysis of organic products from flame retarded polymers. The pyrolysis - gas chromatography/mass spectrometry (Py- GC/MS) finds excellent use in the analysis of thermal degradation products of polymers. In the case of flame retarded polymers, such a study is of great importance in understanding the mechanism of flame retardancy. To study the mechanism of thermal degradation of flame retarded HIPS polymer the phosphate and anhydrophobic fumed silica (Aerosil) were added into the samples. The thermal decomposition temperatures of HIPS samples were measured from the thermogravimetric analysis (TGA) carried out under inert atmosphere from ambient to 550 °C at different heating rates. For the characterization of the studied samples the pyrolysis–gas chromatography/mass spectrometry was used and carried out at 550˚C. In Py-GC/MS analysis the pyrolysis temperature is essential factor because by rising the depolymerisation temperature of HIPS higher percentage of low molecular weight substances is obtained. The results indicate that thermal decomposition of HIPS samples are affected by the presence of flame retardant additives.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA