Naslov
Structure-Properties Relationships of Graft Copolymers EPDM-g-PS, PE-g-HH, EPDM-g-HH

Autori
Ptiček, Anita ; Hrnjak-Murgić, Zlata ; Jelenčić, Jasenka ; Kovačić, Tonka

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

Izvornik
Third International Conference on Polymer Modification, Degradation and Stabilization, MoDeSt 3 / - Lyon, 2004, 1-4

Skup
Third International Conference on Polmyer Modification, Degradation and Stabilisation, MoDeSt 3

Mjesto i datum
Lyon, Francuska, 29.08.2004. - 02.09.2004

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
graft copolymers; in-situ polymerization; compatibilizer

Sažetak
Polymers with multiphase such as graft copolymers, present a unique combination of physical properties. Their commercial success particularly in thermoplastic elastomers, such as ethylene-propylene-diene-g-polystyrene (EPDM-g-PS), polyethylene-g-isocyanate containing monomer HH (PE-g-HH) and ethylene-propylene-diene-g-isocyanate containing monomer HH (EPDM-g-HH) clearly show the advantages in this type of multiphase systems. It is especially interesting to prepare polyolefin graft copolymers with the second polymer containing functional groups, which could dramatically increase the interactions of low reactive polyolefin. However, these reaction lead to side reactions such as cross-linking and chain cleavage resulting in significant changes of properties. In this study three different types of graft copolymers (EPDM-g-PS, PE-g-HH, EPDM-g-HH) were synthesized. All polymers were separated from polymerization solution by precipitation and further characterized. The identification of synthesized graft copolymers has been made by FTIR spectroscopy. Polymers were further characterized by DSC measurements, by determination of Tg and Tm and also by intrinsic viscosity and by molecular masses, n and w. The obtained results indicate that with extended polymerization time the branches of the graft copolymers are longer and its density can be modified by controlled polymerization.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA