Thermal Degradation Behavior of Poly(Lactic Acid) in a Blend with Polyethylene

2006 ◽  
Vol 45 (9) ◽  
pp. 2949-2953 ◽  
Author(s):  
Masaki Omura ◽  
Takayuki Tsukegi ◽  
Yoshihito Shirai ◽  
Haruo Nishida ◽  
Takeshi Endo
Keyword(s):  
Lactic Acid ◽  
Thermal Degradation ◽  
Poly Lactic Acid ◽  
Degradation Behavior ◽  
Thermal Degradation Behavior

Non-isothermal crystallization kinetics, thermal degradation behavior and mechanical properties of poly(lactic acid)/MOF composites prepared by melt-blending methods

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 71461-71471 ◽  
Author(s):  
Xiu Dai ◽  
Yu Cao ◽  
Xiaowei Shi ◽  
Xinlong Wang
Keyword(s):  
Lactic Acid ◽  
Thermal Degradation ◽  
Isothermal Crystallization ◽  
Metal Organic Framework ◽  
Poly Lactic Acid ◽  
Melt Blending ◽  
Isothermal Crystallization Kinetics ◽  
Blending Method ◽  
Thermal Degradation Behavior ◽  
Metal Organic

In this article, poly(lactic acid)/metal–organic framework composites were prepared by melt-blending method and the effects of MOFs on the non-isothermal crystallization, thermal degradation and mechanical property of poly(lactic acid) were studied.

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.

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