Thermal decomposition study of poly(methyl methacrylate)/carbon nanofiller composites

Abstract

This work compares the thermal degradation kinetics of neat atactic poly(methyl methacrylate) (a-PMMA), and its composites with fullerene C 60 and multiwall carbon nanotubes (MWNT) as revealed by thermal desorption massspectrometry (TDMS), and thermal gravimetry analysis (TGA). TDMS suggests the decrease of thermal stability of PMMA-C 60 composite compared to neat PMMA. This result is supported by the increased rate of defect formation in the composite as revealed by the electronic paramagnetic resonance, EPR, technique. On the other hand, TGA shows an increase of thermal degradation temperatures for composite compared to those of neat a-PMMA. The discrepancies between TDMS and TGA data are discussed taking into account the difference of the experimental conditions of the two approaches, i.e. the size of the sample. The parameters which need to be thoroughly controlled in thermal degradation kinetic studies are outlined.

Effect of fullerene C60 on the structure and mechanical properties of thin films based on poly(methylmethacrylate) and other carbochain vinyl polymers: A technological aspect

“…In [17][18][19][20], the methods of thermodesorption mass spectrometry, EPR, and photoluminescence were used to study the incorporation of fullerene С 60 in PMMA through film casting of their common solu tions in toluene. It was shown that, in fact, nanocom posites with a strong interaction between components are formed.…”

Applications of ice‐templated ceramics

“…The composition of the composite was determined to be 45 vol % PMMA by TGA, which was carried out by heating to 350°C and holding for 0.5 hours to complete decomposition of PMMA (Data ). This analysis indicated a significant (9%) mass loss on heating between 25 and 125°C, allowing the shrinkage on the first heating cycle to be attributed to loss of water .…”