Morphological, Mechanical, and Thermal Characterization of Poly(Lactic Acid)/Cellulose Multifilament Fibers Prepared by Melt Spinning

2016 ◽  
Vol 37 (4) ◽  
pp. 1193-1205 ◽  
Author(s):  
Tassadit Aouat ◽  
Mustapha Kaci ◽  
Eric Devaux ◽  
Christine Campagne ◽  
Aurélie Cayla ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Melt Spinning ◽  
Thermal Characterization ◽  
Poly Lactic Acid

scholarly journals Mechanical, Morphological and Thermal Characterization of Compatibilized Poly(lactic acid)/Thermoplastic Starch Blends

2020 ◽  
Vol 13 (1) ◽  
pp. 1-13
Author(s):  
László Lendvai ◽  
Dávid Brenn
Keyword(s):  
Lactic Acid ◽  
Interfacial Adhesion ◽  
Thermal Characterization ◽  
Thermoplastic Starch ◽  
Chain Extender ◽  
Coupling Agents ◽  
Poly Lactic Acid ◽  
Binary Blends ◽  
Starch Blends

A two-step compounding procedure was used to produce binary blends composed of poly(lactic acid) (PLA)  and thermoplastic starch (TPS) with varying component ratios. Subsequently, three different chemical connectors were introduced in order to enhance the interfacial adhesion between the PLA and the TPS. Maleic anhydride, blocked isocyanate, and chain extender were used as coupling agents. Mechanical, morphological and thermal properties of PLA/TPS blends were determined. It was revealed that the initial interfacial adhesion between the components is weak. Out of the three coupling agents introduced, the chain extender proved to be the most effective, however, the improvement achieved in the mechanical properties was still marginal. According to the thermogravimetric analysis thermal stability was not significantly affected by any of the coupling agents.

Thermal Characterization of Biodegradable Poly (Lactic Acid)/Clay Nanocomposites

2009 ◽  
pp. 219-225 ◽  
Author(s):  
Parakalan Krishnamachari ◽  
Jian Zhang ◽  
Jizhong Yan ◽  
Abolghasem Shahbazi ◽  
Leonard Uitenham ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Thermal Characterization ◽  
Poly Lactic Acid ◽  
Clay Nanocomposites ◽  
Biodegradable Poly

Thermal Characterization of Polyhydroxyalkanoates and Poly(lactic acid) Blends Obtained by Injection Molding

2014 ◽  
Vol 54 (4) ◽  
pp. 350-356 ◽  
Author(s):  
Nuno Calçada Loureiro ◽  
Satyabrata Ghosh ◽  
Júlio C. Viana ◽  
José Luis Esteves
Keyword(s):  
Lactic Acid ◽  
Injection Molding ◽  
Thermal Characterization ◽  
Poly Lactic Acid

scholarly journals Dual Plasticizer/Thermal Stabilizer Effect of Epoxidized Chia Seed Oil (Salvia hispanica L.) to Improve Ductility and Thermal Properties of Poly(Lactic Acid)

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1283
Author(s):  
Ivan Dominguez-Candela ◽  
Jose Miguel Ferri ◽  
Salvador Cayetano Cardona ◽  
Jaime Lora ◽  
Vicent Fombuena
Keyword(s):  
Lactic Acid ◽  
Seed Oil ◽  
Chemical Interaction ◽  
Thermal Stabilization ◽  
Thermal Characterization ◽  
Future Application ◽  
Poly Lactic Acid ◽  
Chia Seed ◽  
Packaging Industry ◽  
Chia Seed Oil

The use of a new bio-based plasticizer derived from epoxidized chia seed oil (ECO) was applied in a poly(lactic acid) (PLA) matrix. ECO was used due to its high epoxy content (6.7%), which led to an improved chemical interaction with PLA. Melt extrusion was used to plasticize PLA with different ECO content in the 0–10 wt.% range. Mechanical, morphological, and thermal characterization was carried out to evaluate the effect of ECO percentage. Besides, disintegration and migration tests were studied to assess the future application in packaging industry. Ductile properties improve by 700% in elongation at break with 10 wt.% ECO content. Field emission scanning electron microscopy (FESEM) showed a phase separation with ECO content equal or higher than 7.5 wt.%. Thermal stabilization was improved 14 °C as ECO content increased. All plasticized PLA was disintegrated under composting conditions, not observing a delay up to 5 wt.% ECO. Migration tests pointed out a very low migration, less than 0.11 wt.%, which is to interest to the packaging industry.

scholarly journals Synthesis and Characterization of Polyphosphazenes Modified with Hydroxyethyl Methacrylate and Lactic Acid

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Evelyn Carolina Martínez Ceballos ◽  
Ricardo Vera Graziano ◽  
Gonzalo Martínez Barrera ◽  
Oscar Olea Mejía
Keyword(s):  
Lactic Acid ◽  
Ring Opening ◽  
Room Temperature ◽  
Block Structure ◽  
Ring Opening Polymerization ◽  
Synthesis And Characterization ◽  
Poly Lactic Acid ◽  
Hydroxyethyl Methacrylate ◽  
H Nmr

Poly(dichlorophosphazene) was prepared by melt ring-opening polymerization of the hexachlorocyclotriphosphazene. Poly[bis(2-hydroxyethyl-methacrylate)-phosphazene] and poly[(2-hydroxyethyl-methacrylate)-graft-poly(lactic-acid)-phosphazene] were obtained by nucleophilic condensation reactions at different concentrations of the substituents. The properties of the synthesized copolymers were assessed by FTIR,1H-NMR and31P-NMR, thermal analysis (DSC-TGA), and electron microscopy (SEM). The copolymers have a block structure and show twoTg's below room temperature. They are stable up to a temperature of 100°C. The type of the substituents attached to the PZ backbone determines the morphology of the polymers.

scholarly journals Characterization of Antimicrobial Poly (Lactic Acid)/Nano-Composite Films with Silver and Zinc Oxide Nanoparticles

Materials ◽  
2017 ◽  
Vol 10 (6) ◽  
pp. 659 ◽  
Author(s):  
Zhuangzhuang Chu ◽  
Tianrui Zhao ◽  
Lin Li ◽  
Jian Fan ◽  
Yuyue Qin
Keyword(s):  
Zinc Oxide ◽  
Lactic Acid ◽  
Zinc Oxide Nanoparticles ◽  
Composite Films ◽  
Poly Lactic Acid ◽  
Oxide Nanoparticles ◽  
Nano Composite
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