Isothermal crystallization kinetics of talc-filled poly(lactic acid) and poly(butylene succinate) blends

Pivsa‐Art, Weraporn; Fujii, Kazutoshi; Nomura, Keiichiro; Aso, Yoichi; Ohara, Hirotaka; Yamane, Hideki

doi:10.1007/s10965-016-1045-y

Cited by 16 publications

(15 citation statements)

References 18 publications

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“…For PLA to be able to replace conventional packaging plastics, extensive improvement in its barrier and thermomechanical properties is required. To achieve material properties comparable to other benchmark packaging plastics, various strategies are devised such as stereo‐complexation, blending, addition of nano‐ and micro‐fillers, and so on . Reinforcement of PLA matrix by addition of fillers such as cellulose nanocrystals, chitosan, gum, hydroxyapatite, silk, and so on can be used to form bionanocomposites with the desired properties for packaging .…”

Section: Introductionmentioning

confidence: 99%

Biocomposites of poly(lactic acid) and lactic acid oligomer‐grafted bacterial cellulose: It's preparation and characterization

Patwa

Saha

Sáha

et al. 2019

J of Applied Polymer Sci

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This work demonstrates the synthesis of lactic acid oligomer-grafted-untreated bacterial cellulose (OLLA-g-BC) by in situ condensation polymerization which increased compatibilization between hydrophobic poly(lactic acid) (PLA) and hydrophilic BC, thus enhancing various properties of PLA-based bionanocomposites, indispensable for stringent food-packaging applications. During the synthesis of OLLA-g-BC, hydrophilic BC is converted into hydrophobic due to structural grafting of OLLA chains with BC molecules. Subsequently, bionanocomposites films are fabricated using solution casting technique and characterized for structural, thermal, mechanical, optical, and gas-barrier properties. Morphological images showed uniform dispersion of BC nanospheres in the PLA matrix, which shows strong filler-matrix interaction. The degradation temperatures for bionanocomposites films were above PLA processing temperature indicating that bionanocomposite processing can be industrially viable. Bionanocomposites films displayed decrease in glass transition (T g ) and~20% improvement in elongation with 10 wt % fillers indicating towards plasticization of PLA. PLA/OLLA-g-BC films showed a slight reduction in optical transparency but had excellent UVblocking characteristics. Moreover, dispersed BC act as blocking agents within PLA matrix, reducing the diffusion through the bionanocomposite films which showed~40% improvement in water-vapor barrier by 5 wt % filler addition, which is significant. The reduced T g , improved elongation combined with improved hydrophobicity and water-vapor barrier make them suitable candidate for flexible foodpackaging applications.

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Section: Introductionmentioning

confidence: 99%

Biocomposites of poly(lactic acid) and lactic acid oligomer‐grafted bacterial cellulose: It's preparation and characterization

Patwa

Saha

Sáha

et al. 2019

J of Applied Polymer Sci

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“…In order to accelerate the crystallization process of PLA, the most venerable approach is to amalgamate nucleating agents. Most routine examples include clay, talc, carbon black, etc . Apart from these, few renewable materials have also been integrated like cellulose nanocrystals, chitosan, sucrose palmitate, etc .…”

Section: Introductionmentioning

confidence: 99%

“…Apart from these, few renewable materials have also been integrated like cellulose nanocrystals, chitosan, sucrose palmitate, etc . The crystallization of polymer affects the material properties and also process control which is indispensable part of polymer processing . Very few have reported the impact of silk or silk derivatives on crystallization properties of PLA .…”

Section: Introductionmentioning

confidence: 99%

Crystallization kinetics, morphology, and hydrolytic degradation of novel bio‐based poly(lactic acid)/crystalline silk nano‐discs nanobiocomposites

Patwa

Kumar

Katiyar

2018

J of Applied Polymer Sci

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In this work, novel biodegradable crystalline silk nano‐discs (CSNs) having a disc‐like morphology have been utilized for fabrication of poly(lactic acid) (PLA) nanocomposites by melt‐extrusion. The main focus is to investigate the effect of CSN on isothermal melt crystallization kinetics, spherulitic growth rates, morphology, and hydrolytic degradation of PLA. Spherulitic morphology and growth rates are examined over a wide range of crystallization temperatures (90–120 °C). With incorporation of CSN, the isothermal crystallization kinetics of PLA/CSN increases, however, the crystallization mechanism remains unaltered. The apparent activation energy and surface energy barrier for crystallization process decreases upon addition of CSNs. At lower isothermal crystallization temperatures (Tc) viz. (90–100 °C), reduced growth rates of PLA spherulites is observed. Both PLA and PLA/CSN exhibit highest crystallization rates at around ∼107 °C. The hydrolytic degradation rates calculated from molecular weight reduction shows that PLA/CSN nanocomposites' degradation rates are lower as compared to PLA in acidic, neutral, and alkaline media at pH = 2, 7, and 12, respectively, due to hydrophobic nature of CSN. Scanning electron microscopy study demonstrated the surface erosion mechanism of hydrolytic degradation of PLA and PLA/CSN nanocomposites. This work provides valuable insight for the application and reclamation of PLA/CSN bionanocomposites in moist and wet working environments. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46590.

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“…Addition of nucleating agents enhances crystallization temperature and degree of crystallinity. The effect of the addition of talc (76,77), poly (D-Lactic acid) (PDLA), Zinc phenyl phosphonate, carbon nanotubes, PLA inclusion complex, natural fibers as a nucleating agent to PLA have been investigated (73,78). Vestena et al (74) investigated an impact on crystallization kinetics of PLA matrix with the inclusion of Cellulose Nanocrystals (CNCs).…”

Section: Type Of Application Productsmentioning

confidence: 99%

A glimpse of biodegradable polymers and their biomedical applications

Shah

Vasava

2019

E-Polymers

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Over the past two decades, biodegradable polymers (BPs) have been widely used in biomedical applications such as drug carrier, gene delivery, tissue engineering, diagnosis, medical devices, and antibacterial/antifouling biomaterials. This can be attributed to numerous factors such as chemical, mechanical and physiochemical properties of BPs, their improved processibility, functionality and sensitivity towards stimuli. The present review intended to highlight main results of research on advances and improvements in terms of synthesis, physical properties, stimuli response, and/or applicability of biodegradable plastics (BPs) during last two decades, and its biomedical applications. Recent literature relevant to this study has been cited and their developing trends and challenges of BPs have also been discussed.

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Isothermal crystallization kinetics of talc-filled poly(lactic acid) and poly(butylene succinate) blends

Cited by 16 publications

References 18 publications

Biocomposites of poly(lactic acid) and lactic acid oligomer‐grafted bacterial cellulose: It's preparation and characterization

Biocomposites of poly(lactic acid) and lactic acid oligomer‐grafted bacterial cellulose: It's preparation and characterization

Crystallization kinetics, morphology, and hydrolytic degradation of novel bio‐based poly(lactic acid)/crystalline silk nano‐discs nanobiocomposites

A glimpse of biodegradable polymers and their biomedical applications

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