Hydrolytic and thermal degradation of polyethylene glycol compatibilized poly(lactic acid)-nanocrystalline cellulose bionanocomposites

2018 ◽  
Vol 136 (2) ◽  
pp. 46933 ◽  
Author(s):  
Ping Zhang ◽  
Yi-Yao He ◽  
De Gao ◽  
Yingfeng Cai ◽  
Bingren Liu
Keyword(s):  
Lactic Acid ◽  
Polyethylene Glycol ◽  
Thermal Degradation ◽  
Nanocrystalline Cellulose ◽  
Poly Lactic Acid

Improvement of the antifouling properties of poly (lactic acid) hollow fiber membranes with poly (lactic acid)–polyethylene glycol–poly (lactic acid) copolymers

Desalination ◽  
2013 ◽  
Vol 325 ◽  
pp. 37-39 ◽  
Author(s):  
Peng Shen ◽  
Akihito Moriya ◽  
Saeid Rajabzadeh ◽  
Tatsuo Maruyama ◽  
Hideto Matsuyama
Keyword(s):  
Lactic Acid ◽  
Polyethylene Glycol ◽  
Hollow Fiber ◽  
Poly Lactic Acid ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes

Effect of Polyethylene Glycol in Nanocellulose/PLA Composites

2019 ◽  
Vol 821 ◽  
pp. 89-95
Author(s):  
Wanasorn Somphol ◽  
Thipjak Na Lampang ◽  
Paweena Prapainainar ◽  
Pongdhorn Sae-Oui ◽  
Surapich Loykulnant ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Lactic Acid ◽  
Polyethylene Glycol ◽  
Aspect Ratio ◽  
Mechanical Performance ◽  
Tensile Modulus ◽  
Poly Lactic Acid ◽  
Solvent Casting ◽  
Casting Method ◽  
Mediated Oxidation

Poly (lactic acid) or PLA was reinforced by nanocellulose and polyethylene glycol (PEG), which were introduced into PLA matrix from 0 to 3 wt.% to enhance compatibility and strength of the PLA. The nanocellulose was prepared by TEMPO-mediated oxidation from microcrystalline cellulose (MCC) powder and characterized by TEM, AFM, and XRD to reveal rod-like shaped nanocellulose with nanosized dimensions, high aspect ratio and high crystallinity. Films of nanocellulose/PEG/PLA nanocomposites were prepared by solvent casting method to evaluate the mechanical performance. It was found that the addition of PEG in nanocellulose-containing PLA films resulted in an increase in tensile modulus with only 1 wt% of PEG, where higher PEG concentrations negatively impacted the tensile strength. Furthermore, the tensile strength and modulus of nanocellulose/PEG/PLA nanocomposites were higher than the PLA/PEG composites due to the existence of nanocellulose chains. Visual traces of crazing were detailed to describe the deformation mechanism.

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.

Thermal degradation kinetics of sucrose palmitate reinforced poly(lactic acid) biocomposites

2014 ◽  
Vol 65 ◽  
pp. 275-283 ◽  
Author(s):  
Ravibabu Valapa ◽  
Gopal Pugazhenthi ◽  
Vimal Katiyar
Keyword(s):  
Lactic Acid ◽  
Thermal Degradation ◽  
Degradation Kinetics ◽  
Thermal Degradation Kinetics ◽  
Poly Lactic Acid ◽  
Kinetics Of

A study on thermal degradation kinetics and flammability properties of poly(lactic acid)/banana fiber/nanoclay hybrid bionanocomposites

2015 ◽  
Vol 38 (10) ◽  
pp. 2067-2079 ◽  
Author(s):  
V.P. Sajna ◽  
Smita Mohanty ◽  
Sanjay K. Nayak
Keyword(s):  
Lactic Acid ◽  
Thermal Degradation ◽  
Degradation Kinetics ◽  
Thermal Degradation Kinetics ◽  
Poly Lactic Acid ◽  
Banana Fiber

scholarly journals Thermal degradation of Aceh’s bentonite reinforced poly lactic acid (PLA) based on renewable resources for packaging application

2018 ◽  
Author(s):  
Suryani ◽  
Harry Agusnar ◽  
Basuki Wirjosentono ◽  
Teuku Rihayat ◽  
Nurhanifa
Keyword(s):  
Lactic Acid ◽  
Thermal Degradation ◽  
Renewable Resources ◽  
Poly Lactic Acid

Multimodal tumor imaging by iron oxides and quantum dots formulated in poly (lactic acid)-d-alpha-tocopheryl polyethylene glycol 1000 succinate nanoparticles

Biomaterials ◽  
2011 ◽  
Vol 32 (11) ◽  
pp. 2969-2978 ◽  
Author(s):  
Yang Fei Tan ◽  
Prashant Chandrasekharan ◽  
Dipak Maity ◽  
Cai Xian Yong ◽  
Kai-Hsiang Chuang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Lactic Acid ◽  
Polyethylene Glycol ◽  
Iron Oxides ◽  
Tumor Imaging ◽  
Poly Lactic Acid ◽  
Polyethylene Glycol 1000

Synergistic effects of polyethylene glycol and organic montmorillonite on the plasticization and enhancement of poly(lactic acid)

2019 ◽  
Vol 136 (21) ◽  
pp. 47576 ◽  
Author(s):  
Wenting Chen ◽  
Hao Chen ◽  
Ya Yuan ◽  
Shaoxian Peng ◽  
Xipo Zhao
Keyword(s):  
Lactic Acid ◽  
Polyethylene Glycol ◽  
Synergistic Effects ◽  
Poly Lactic Acid ◽  
Organic Montmorillonite

Polyethylene glycol functionalized graphene oxide and its influences on properties of Poly(lactic acid) biohybrid materials

2019 ◽  
Vol 161 ◽  
pp. 651-658 ◽  
Author(s):  
Nguyen Dang Mao ◽  
Hun Jeong ◽  
Thi Kim Ngan Nguyen ◽  
Thi Mai Loan Nguyen ◽  
Thi Vi Vi Do ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Lactic Acid ◽  
Polyethylene Glycol ◽  
Poly Lactic Acid ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide
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