PMMA-titania nanocomposites: Properties and thermal degradation behavior

Eugenio Caponetti, Maria Luisa Saladino, Giorgio Nasillo, Tshwafo Elias Motaung, Massimo Messori, Federica Bondioli, Adriaan Stephanus Luyt, Alberto Spinella

Risultato della ricerca: Articlepeer review

53 Citazioni (Scopus)

Abstract

Titania nanoparticles were prepared using a solegel method and calcination at 200 and 600 C in orderto obtain anatase and rutile phases, respectively. The obtained powders were used to prepare PMMAetitania nanocomposites by a melt compounding method. The effect of the crystalline phase and theamount of titania, in the range 1e5 wt.%, on the morphology, mechanical properties and thermaldegradation kinetics of PMMA was investigated by means of X-ray diffractometry (XRD), transmissionelectron microscopy (TEM), 13C cross-polarization magic-angle spinning nuclear magnetic resonancespectroscopy (13C{1H}CP-MAS NMR), including the measurement of proton spinelattice relaxation timein the rotating frame (T1r(H)), in the laboratory frame (T1(H)) and cross polarization times (TCH), anddynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), and Fourier-transform infrared(FTIR) spectroscopy. Results showed that both types of titania were well dispersed in the polymericmatrix, whose structure remained amorphous. The two types of nanoparticles influenced the degradationof the polymer in different ways because of their different carbon content, particle size and crystalstructures.
Lingua originaleEnglish
pagine (da-a)1325-1333
Numero di pagine9
RivistaPolymer Degradation and Stability
Volume97
Stato di pubblicazionePublished - 2012

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.2200.2211???
  • ???subjectarea.asjc.2500.2507???
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