Control of thermal degradation of polylactide/clay nanocomposites during melt processing by chain extension reaction

2012 ◽  
Vol 97 (10) ◽  
pp. 2010-2020 ◽  
Author(s):  
Qingkai Meng ◽  
Marie-Claude Heuzey ◽  
Pierre J. Carreau
Keyword(s):  
Thermal Degradation ◽  
Melt Processing ◽  
Chain Extension ◽  
Clay Nanocomposites

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.

Conducting Polymer/Clay Nanocomposites and Their Applications

2008 ◽  
Vol 8 (4) ◽  
pp. 1559-1581 ◽  
Author(s):  
Fei Fei Fang ◽  
Hyoung Jin Choi ◽  
Jinsoo Joo
Keyword(s):  
Thermal Degradation ◽  
Conducting Polymer ◽  
Clay Nanocomposites ◽  
Degradation Behavior ◽  
Preparation Methods ◽  
Xrd Pattern ◽  
Structure Characteristics ◽  
Thermal Degradation Behavior ◽  
Potential Applications ◽  
Er Fluids

This review aims at reporting on interesting and potential aspects of conducting polymer/clay nanocomposites with regard to their preparation, characteristics and engineering applications. Various conducting polymers such as polyaniline, polypyrrole and copolyaniline are introduced and three different preparation methods of synthesizing conducting polymer/clay nanocomposites are being emphasized. Morphological features, structure characteristics and thermal degradation behavior are explained based on SEM/TEM images, XRD pattern analyses and TGA/DSC graphs, respectively. Attentions are also being paid on conductive/magnetic performances as well as two potential applications in anti-corrosion coating and electrorheological (ER) fluids.

Thermal degradation kinetics of polypropylene/clay nanocomposites prepared by injection molding compounder

2019 ◽  
Vol 40 (9) ◽  
pp. 3634-3643 ◽  
Author(s):  
Paramsamy Kannan Vimalathithan ◽  
Claudia Barile ◽  
Caterina Casavola ◽  
Sundaresan Arunachalam ◽  
Markus Gottfried Battisti ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Injection Molding ◽  
Degradation Kinetics ◽  
Thermal Degradation Kinetics ◽  
Clay Nanocomposites ◽  
Kinetics Of

Ionomer-Clay Nanocomposites Via Melt Processing

2006 ◽  
Vol 26 (8-9) ◽  
Author(s):  
Y. Gao ◽  
N.R. Choudhury ◽  
N. Dutta
Keyword(s):  
Melt Processing ◽  
Clay Nanocomposites

Control of thermal degradation of polylactide (PLA)-clay nanocomposites using chain extenders

2012 ◽  
Vol 97 (4) ◽  
pp. 554-565 ◽  
Author(s):  
N. Najafi ◽  
M.C. Heuzey ◽  
P.J. Carreau ◽  
Paula M. Wood-Adams
Keyword(s):  
Thermal Degradation ◽  
Clay Nanocomposites ◽  
Chain Extenders
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