Addition of Organo-Modified Nanoclay for Tuning the Microstructure, Thermal Stability, and Biodegradability of Poly(lactic acid)/Polycarbonate Immiscible Blends

Chelghoum, Nadjat; Mayouf, Imane; Larous, Ali; Guessoum, Melia; Fois, Magali; Haddaoui, Nacerddine

doi:10.1134/s0965545x22700225

Cited by 2 publications

(2 citation statements)

References 34 publications

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“…α-orthorhombic and α 0 -pseudo-orthorhombic structures presenting different thickness and degree of perfection. 31 Overall, the addition of SEBS-g-MA did not significantly affect the thermal properties of neat PLA and PLA/LF composites. Indeed, PLA phase T g decreases slightly for PLA/LF composites but it increases again for PLA/SEBS-g-MA/LF composites.…”

Section: Morphology Observationmentioning

confidence: 84%

“…PLA thermogram shows that it exhibits a glass transition around 64°C, a cold crystallization temperature at 113°C and two melting endotherms at 170 and 177°C. The double melting peak of PLA is explained by the coexistence of two crystalline phases α‐orthorhombic and α′‐pseudo‐orthorhombic structures presenting different thickness and degree of perfection 31 …”

Section: Resultsmentioning

confidence: 99%

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Upgrading the properties of polylactic acid/luffa fiber biocomposites through the addition of maleic anhydride grafted styrene–ethylene–butylene–styrene impact modifier

Rahem,

Mayouf,

Guessoum

2024

Polymers for Advanced Techs

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To enhance the adhesion at the interface between polylactic acid (PLA) and local luffa fibers (LFs), and improve the properties of these fully biodegradable biocomposites, 10% of maleic anhydride grafted Styrene–ethylene–butylene–styrene (SEBS‐g‐MA) is added to act concomitantly as compatibilizer and toughening agent. PLA/LF and PLA/SEBS‐g‐MA/LF biocomposite materials were manufactured by melt mixing and then characterized by torque assessment, Fourier transform‐infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and Izod impact test. In accordance with SEM observation, FTIR analysis and torque measurements, the interfacial bonding coupling the PLA chains to LF via SEBS backbones resulted from the chemical reactions between the functional groups of the composites components. This contributed in increasing notably the impact resistance and the thermal stability compared with the biocomposites without SEBS‐g‐MA. In addition, the improvement of the impact strength might be induced by the flexible ethylene‐butylene blocks, which act as impact absorbers due to their rubber‐like behavior.

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Section: Morphology Observationmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Upgrading the properties of polylactic acid/luffa fiber biocomposites through the addition of maleic anhydride grafted styrene–ethylene–butylene–styrene impact modifier

Rahem,

Mayouf,

Guessoum

2024

Polymers for Advanced Techs

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Improving the compatibility of polylactic acid/polycarbonate blends with nanoclay and Joncryl as chain extenders

Khojasteh‐Khosro,

Shalbafan,

Thoemen

2024

J of Applied Polymer Sci

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This study aimed to optimize the compatibility and performance of PLA/PC blends by investigating the effects of Cloisite 20A nanoclay (NC) and Joncryl chain extender (CE). PLA/PC blends with varying NC and CE loadings were prepared, and the optimal formulation was identified. The optimal NC and CE content were then used to produce PLA/PC blends with varying PC ratios. The test specimens were produced by mixing the mixture in a twin‐screw micro compounder and subsequent injection molding into dog bone specimens to investigate the thermal, mechanical, and morphological properties of the blends. Scanning electron microscopy and dynamic mechanical analysis confirmed the immiscibility of the unmodified blend, but significant improvements in blend morphology were observed with high NC/CE ratios. The presence of NC/CE resulted in reduced droplet size of dispersed PC phase and a new intermediate glass transition temperature (Tg) in DMA, suggesting partial miscibility. The highest thermal stability improvement was achieved with 5 wt% NC alone or a combination of 5 wt% NC and 1 wt% CE. Composites containing NC/CE showed the most significant improvements in composite properties, demonstrating their effectiveness as compatibilizers and improved compatibility in PLA/PC blends. These results indicate that the use of NC/CE is a promising method for expanding the applicability of PLA/PC blends.

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Addition of Organo-Modified Nanoclay for Tuning the Microstructure, Thermal Stability, and Biodegradability of Poly(lactic acid)/Polycarbonate Immiscible Blends

Cited by 2 publications

References 34 publications

Upgrading the properties of polylactic acid/luffa fiber biocomposites through the addition of maleic anhydride grafted styrene–ethylene–butylene–styrene impact modifier

Upgrading the properties of polylactic acid/luffa fiber biocomposites through the addition of maleic anhydride grafted styrene–ethylene–butylene–styrene impact modifier

Improving the compatibility of polylactic acid/polycarbonate blends with nanoclay and Joncryl as chain extenders

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