Electrospun Nanofibres of PLA/PANI and PLA/P (ANI-co-m-ABA): Thermal Studies

2011 ◽  
Vol 700 ◽  
pp. 137-140 ◽  
Author(s):  
Norizah Abdul Rahman ◽  
Allan J. Easteal ◽  
Jadranka Travas-Sejdic ◽  
Allan J. Easteal
Keyword(s):  
Lactic Acid ◽  
Thermal Degradation ◽  
Thermal Effects ◽  
Thermal Studies ◽  
Poly Lactic Acid ◽  
Aminobenzoic Acid ◽  
Degradation Temperature ◽  
Electrospun Nanofibres ◽  
Poly Aniline ◽  
Thermal Degradation Temperature

Composite nanofibres of poly (lactic acid) (PLA) with polyaniline (PANI) or poly (aniline-co-m-aminobenzoic acid) (P (ANI-co-m-ABA)) were prepared by electrospinning. Thermal effects on the properties of the composite nanofibres were studied by means of DSC and TGA. TGA results show that the onset thermal degradation temperature of the composite fibres was slightly higher than that of pure PLA. The degree of the crystallinity of the nanofibres was determined from DSC data and compared to film with the same composition.

Functional electrospun nanofibres of poly(lactic acid) blends with polyaniline or poly(aniline-co-benzoic acid)

2010 ◽  
Vol 160 (17-18) ◽  
pp. 2015-2022 ◽  
Author(s):  
Norizah Abdul Rahman ◽  
Marija Gizdavic-Nikolaidis ◽  
Sudip Ray ◽  
Allan J. Easteal ◽  
Jadranka Travas-Sejdic
Keyword(s):  
Lactic Acid ◽  
Benzoic Acid ◽  
Poly Lactic Acid ◽  
Electrospun Nanofibres ◽  
Poly Aniline

Thermal degradation kinetics of Opuntia Ficus Indica flour and talc-filled poly (lactic acid) hybrid biocomposites by TGA analysis

2021 ◽  
pp. 002199832110082
Author(s):  
Azzeddine Gharsallah ◽  
Abdelheq Layachi ◽  
Ali Louaer ◽  
Hamid Satha
Keyword(s):  
Thermal Stability ◽  
Lactic Acid ◽  
Thermal Degradation ◽  
Degradation Kinetics ◽  
Degradation Mechanism ◽  
Melt Processing ◽  
Thermal Degradation Kinetics ◽  
Poly Lactic Acid ◽  
Opuntia Ficus Indica ◽  
Model Free

This paper reports the effect of lignocellulosic flour and talc powder on the thermal degradation behavior of poly (lactic acid) (PLA) by thermogravimetric analysis (TGA). Lignocellulosic flour was obtained by grinding Opuntia Ficus Indica cladodes. PLA/talc/ Opuntia Ficus Indica flour (OFI-F) biocomposites were prepared by melt processing and characterized using Wide-angle X-ray scattering (WAXS) and Scanning Electron Microscope (SEM). The thermal degradation of neat PLA and its biocomposites can be identified quantitatively by solid-state kinetics models. Thermal degradation results on biocomposites compared to neat PLA show that talc particles at 10 wt % into the PLA matrix have a minor impact on the thermal stability of biocomposites. Loading OFI-F and Talc/OFI-F mixture into the PLA matrix results in a decrease in the maximum degradation temperature, which means that the biocomposites have lower thermal stability. The activation energies (Ea) calculated by the Flynn Wall Ozawa (FWO) and Kissinger Akahira Sunose (KAS) model-free approaches and by model-fitting (Kissinger method and Coats-Redfern method) are in good agreement with one another. In addition, in this work, the degradation mechanism of biocomposites is proposed using Coats-Redfern and Criado methods.

Effects of hydrophilic fillers on the thermal degradation of poly(lactic acid)

2010 ◽  
Vol 509 (1-2) ◽  
pp. 147-151 ◽  
Author(s):  
Xingxun Liu ◽  
Sarah Khor ◽  
Eustathios Petinakis ◽  
Long Yu ◽  
George Simon ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Thermal Degradation ◽  
Poly Lactic Acid
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