Control of thermal degradation of poly(lactic acid) using functional polysilsesquioxane microspheres as chain extenders

2015 ◽  
Vol 132 (20) ◽  
pp. n/a-n/a ◽  
Author(s):  
Ting Han ◽  
Zhong Xin ◽  
Yaoqi Shi ◽  
Shicheng Zhao ◽  
Xin Meng ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Thermal Degradation ◽  
Poly Lactic Acid ◽  
Chain Extenders

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.

Microcellular foaming of poly(lactic acid) branched with food‐grade chain extenders

2021 ◽  
Vol 138 (29) ◽  
pp. 50686
Author(s):  
Krishnaa B. Venkatesan ◽  
Sonal S. Karkhanis ◽  
Laurent M. Matuana
Keyword(s):  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Food Grade ◽  
Microcellular Foaming ◽  
Chain Extenders

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
Sign in / Sign up

Export Citation Format

Share Document