CHARACTERIZATION OF POLY(ETHYLENE OXIDE) MODIFIED WITH DIFFERENT PHENYL HEPTA ISOBUTYL POLYHEDRAL OLIGOMERIC SILSESQUIOXANES (CROSBI ID 285741)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Stipanelov Vrandečić, Nataša ; Erceg, Matko ; Andričić, Branka ; Blanco, Ignazio ; Bottino, Francesco A.
engleski
CHARACTERIZATION OF POLY(ETHYLENE OXIDE) MODIFIED WITH DIFFERENT PHENYL HEPTA ISOBUTYL POLYHEDRAL OLIGOMERIC SILSESQUIOXANES
Poly(ethylene oxide)/polyhedral oligomeric silsesquioxanes (PEO/POSS) composites were prepared by the melting method. The thermal characteristics of PEO/POSSs were investigated by means of differential scanning calorimetry (DSC) while thermal stability was investigated by the non-isothermal thermogravimetry (TG). The glass transition temperatures, melting temperatures and crystallinity of PEO decrease with the addition of POSS. FTIR analysis also confirms decrease of PEO crystallinity with the addition of POSS. The addition of POSS nanoparticles shifts the beginning of PEO decomposition toward lower temperatures while they do not have a significant effect on the maximum decomposition temperature, maximum decomposition rate and the residual mass. Scanning electron microscopy (SEM) analysis seems to indicate that poor dispersion of POSS nanoparticles causes this worsening in the thermal behavior of the prepared composites. The non- isothermal decomposition of PEO/POSS samples is more complex compared to pure PEO. POSS nanoparticles influence the beginning of the decomposition process and the acivation energy of the decomposition process of PEO, while the kinetic model of the decomposition process of PEO remains the same.
poly(ethylene oxide) ; polyhedral oligomeric silsesquioxanes ; thermal analysis ; kinetic analysis
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Podaci o izdanju
142 (5)
2020.
1863-1875
objavljeno
1388-6150
1572-8943
10.1007/s10973-020-10076-4