Evaluation of Physicochemical and Antifungal Properties of Polylactic Acid–Thermoplastic Starch–Chitosan Biocomposites

Rodríguez‐Núñez, Jesús R.; Domínguez-López, Anaiz; Domínguez-López, Carolina; Owen, Patricia Quintana; López-Cervantes, Jaime; Sánchez-Machado, Dalia I.; Félix, Dora Evelia Rodríguez; Jatomea, Maribel Plasencia; Caballero, Vicente Peña; Madera-Santana, Tomás J.

doi:10.1080/03602559.2016.1211683

Cited by 13 publications

(3 citation statements)

References 21 publications

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“…Higher weight loss encountered at this stage was attributed to the simultaneous decomposition of PLA and Cs components through the degradation of the ester bonds, as well as the breakdown of saccharide rings and chitin products in PLA and Cs molecules, respectively, as in agreement with Hernández et al [14] and Rodríguez-Núñez et al. [34] Besides, a slight reduction in weight percentage was observed at the initial (50-150 C) and final (400-500 C) decomposition stages. This was associated with the moisture vaporization of both Cs and aluminosilicate at the initial stage.…”

Section: Thermogravimetric Analysissupporting

confidence: 89%

Effect of partial replacement of chitosan with halloysite nanotubes on the properties of polylactic acid hybrid biocomposites

Kamaludin

Ismail

Rusli

et al. 2021

Vinyl Additive Technology

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In this study, hybrid chitosan/halloysite nanotubes (Cs/HNTs) reinforced polylactic acid (PLA) were prepared via melt compounding and compression molding techniques. In the fabrication of PLA/Cs/HNTs hybrid biocomposites, the partial replacement of Cs with HNTs was performed at filler loading of 2.5 parts per hundred parts of polymer (php), proceeding from the highest tensile strength of PLA/Cs obtained in our previous study. Cs was partially replaced with different HNTs loadings (0.5, 1, 1.5, 2, and 2.5) php and its effects on the functional group, thermal, tensile, morphological, and water absorption properties were investigated systematically. The results revealed that the combined loading of 1 php Cs and 1.5 php HNTs hybrid fillers into PLA showed the best performance in all properties. Fourier transform infrared spectroscopy (FTIR) analysis indicated that the siloxane (SiO) group of HNTs had chemically interacted with the amine group of Cs. The thermal analysis demonstrated that partial replacement of Cs with 1.5 php HNTs improved the thermal stability of PLA/2.5Cs/0HNTs biocomposite by ~12%. Yet, the percentage of crystallinity (χc) reduced with HNTs addition due to the phase adhesion improvement. Moreover, PLA/1Cs/1.5HNTs hybrid biocomposites showed the highest tensile strength and elongation at break of 59 MPa and 2.72%, respectively. This correlated with the uniform dispersion and better interfacial adhesion between Cs/HNTs fillers in the PLA matrix, as confirmed by the field emission scanning electron microscopy (FESEM). In addition, partial replacement of Cs with HNTs exhibited a lower water absorption percentage, which suggested the advantage of hybrid fillers to reduce water uptake, and is beneficial in a wide range of applications.

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Section: Thermogravimetric Analysissupporting

confidence: 89%

Effect of partial replacement of chitosan with halloysite nanotubes on the properties of polylactic acid hybrid biocomposites

Kamaludin

Ismail

Rusli

et al. 2021

Vinyl Additive Technology

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“…This finding contradicts the previous study, which found that the degradation temperature of PLA increased with the addition of coconut fiber [20]. However, other studies show similar results, where the thermal stability of PLA is better than that of its biocomposites [19,21]. This shows that the thermal stability of PLA biocomposites is influenced by the type of fiber used.…”

Section: Figure 3 Mass Increases Of Specimens Compositecontrasting

confidence: 81%

Study of Immersion Behavior and Thermal Stability of Green Composite PLA/Bamboo

Widantha,

Baiti,

Kusuma

2023

LOGIC

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One way to address environmental problems caused by the use of synthetic materials is by exploring the potential of new materials that are more environmentally friendly. This research aims to develop PLA/bamboo green composites by investigating the effects of fiber composition and alkali treatment on the thermal stability and immersion behavior of the composites. PLA/bamboo composites were produced using the hot press method with bamboo fibers at 10, 20, and 30 wt.% concentrations. Alkaline treatment was conducted using a 5% NaOH concentration for 24 hours. The PLA/bamboo composite exhibited weight gain due to water absorption during the soaking process. The inclusion of bamboo composition increases the water absorption of the composite, whereas alkali treatment decreases the water absorption of the composite. Furthermore, the introduction of fibers also reduces the degradation temperature of the composite. This research is expected to provide valuable insights for the broader utilization of green composite materials.

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“…Although, they still bear the characteristic FTIR signals of the individual polymers that comprise the blends, with the intensity of these signals varying accordingly to the concentration in weight of each polymer in the blend. The characteristic signals observed in the spectra consist of bands located at 3355 and 3403 cm −1 proper of natural Chitosan and PLA, corresponding to the OH and NH functional groups 23 . In addition, the signal located at 1752 cm −1 is associated with the carbonyl of ester groups proper of PLA 24 .…”

Section: Resultsmentioning

confidence: 95%

Extrusion of polypropylene/chitosan/poly(lactic‐acid) films: Chemical, mechanical, and thermal properties

Quiroz-Castillo

Rodríguez-Félix

Romero‐García

et al. 2020

J of Applied Polymer Sci

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Development of extruded films composed of biopolymers blended with synthetic polymers aims to minimize the environmental impact of plastic waste‐materials and lead to the sustainable plastic industry. To produce biodegradable polymeric blends, the weight content of biopolymers must be maximum without compromising the performance properties of the extruded films. Using a solvent‐free extrusion method, films composed of polypropylene, poly(lactic‐acid), and Chitosan, can be obtained with the use of polypropylene‐graft‐maleic anhydride and glycerol as compatibilizer and plasticizer, respectively. Extruded films with up to a 50 wt% content of biopolymers show acceptable thermal and mechanical properties, where the use of compatibilizer improves the processing characteristics and homogeneous distribution of chitosan throughout the films. Therefore, the extruded films can be considered as alternatives to conventional synthetic‐polymer films, due to their acceptable mechanical and thermal properties with direct potential applications in extrusion‐method mass production of biodegradable polymers.

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Evaluation of Physicochemical and Antifungal Properties of Polylactic Acid–Thermoplastic Starch–Chitosan Biocomposites

Cited by 13 publications

References 21 publications

Effect of partial replacement of chitosan with halloysite nanotubes on the properties of polylactic acid hybrid biocomposites

Effect of partial replacement of chitosan with halloysite nanotubes on the properties of polylactic acid hybrid biocomposites

Study of Immersion Behavior and Thermal Stability of Green Composite PLA/Bamboo

Extrusion of polypropylene/chitosan/poly(lactic‐acid) films: Chemical, mechanical, and thermal properties

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