Open AccessThermal stability of segmented polyurethane elastomers reinforced by clay particles
Author(s) -
Jelena Pavličević,
Jaroslava BudìnskiSimendìć,
Mészáros Katalin Szécsényi,
Nada Lazić,
Milena Špı́rková,
Adam Strachota
Publication year - 2009
Publication title -
hemijska industrija
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.147
H-Index - 19
eISSN - 2217-7426
pISSN - 0367-598X
DOI - 10.2298/hemind0906621p
Subject(s) - differential scanning calorimetry , extender , materials science , thermal stability , elastomer , diol , glass transition , thermogravimetry , montmorillonite , polyurethane , bentonite , composite material , polycarbonate , polymer chemistry , chemical engineering , polymer , physics , engineering , thermodynamics
The aim of this work was to determine the influence of clay nanoparticles on thermal properties of segmented polyurethanes based on hexamethylene- diisocyanate, aliphatic polycarbonate diol and 1,4-butanediol as chain extender. The organically modified particles of montmorillonite and bentonite were used as reinforcing fillers. The structure of elastomeric materials was varied either by diol type or chain extender content. The ratio of OH groups from diol and chain extender (R) was either 1 or 10. Thermal properties of prepared materials were determined using modulated differential scanning calorimetry (MDSC). Thermal stability of obtained elastomers has been studied by simultaneously thermogravimetry coupled with DSC. The glass transition temperature, Tg, of soft segments for all investigated samples was about -33°C. On the basis of DTG results, it was concluded that obtained materials were very stable up to 300°C