Preparation, characterization, and mechanical properties of poly(<i>ε</i>‐caprolactone)/polylactic acid blend composites

Akos, Noel Ibrahim; Wahit, Mat Uzir; Raiss, Mohamed; Yussuf, Abdirahman Ali

doi:10.1002/pc.22488

Cited by 33 publications

(18 citation statements)

References 34 publications

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“…The interfacial reactive compatibility of PLA blends and the formation of special phase morphologies play key roles in achieving the high impact strength of PLA blends. However, PLA and PCL are thermodynamically incompatible with each other; PLA blends with PCL have been reported as being phase-separate systems with poor interfacial adhesion [23,24]. Many studies have been done on enhancing the compatibility of the PLA/PCL blend by using the addition of reactive compatibilization methods.…”

Section: Introductionmentioning

confidence: 99%

Super-Toughened Poly(lactic Acid) with Poly(ε-caprolactone) and Ethylene-Methyl Acrylate-Glycidyl Methacrylate by Reactive Melt Blending

Hou

2019

Polymers

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In recent years, poly(lactic acid) (PLA) has attracted more and more attention as one of the most promising biobased and biodegradable polymers. However, the inherent brittleness significantly limits its wide application. Here, ternary blends of PLA, poly(ε-caprolactone) (PCL) with various amounts of ethylene-methyl acrylate-glycidyl methacrylate (EMA-GMA) terpolymer were fabricated through reactive melt blending in order to improve the toughness of PLA. The effect of different addition amounts of EMA-GMA on the mechanical properties, interfacial compatibility and phase morphology of PLA/PCL blends were studied. The reactions between the epoxy groups of EMA-GMA and carboxyl and hydroxyl end groups of PLA and PCL were investigated thorough a Fourier transform infrared (FT-IR). The miscibility and thermal behavior of the blends were studied through a dynamic mechanical analysis (DMA), differential scanning calorimetric (DSC) and X-ray diffraction (XRD). The phase morphology and impact fracture surface of the blends were also investigated through a scanning electron microscope (SEM). With the addition of 8 phr EMA-GMA, a PLA/PCL (90 wt %:10 wt %)/EMA-GMA ternary blend presenting a suitable multiple stacked phase structure with an optimum interfacial adhesion exhibited an elongation at break of 500.94% and a notched impact strength of 64.31 kJ/m2 with a partial break impact behavior. Finally, the toughening mechanism of the supertough PLA based polymers have been established based on the above analysis.

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Section: Introductionmentioning

confidence: 99%

Super-Toughened Poly(lactic Acid) with Poly(ε-caprolactone) and Ethylene-Methyl Acrylate-Glycidyl Methacrylate by Reactive Melt Blending

Hou

2019

Polymers

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“…Although the properties of PCL/PLA blends have been extensively studied, however, to the best of our knowledge, environment‐friendly composites of PCL reinforced with sc‐PLA have not been explored in details. Therefore, in this work, a series of PCL/sc‐PLA composites are prepared by solution blending.…”

Section: Introductionmentioning

confidence: 99%

Toward environment‐friendly composites of poly(ε‐caprolactone) reinforced with stereocomplex‐type poly(l‐lactide)/poly(d‐lactide)

Dong

Han

et al. 2013

J of Applied Polymer Sci

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In this work, stereocomplex-poly(L-and D-lactide) (sc-PLA) was incorporated into poly(e-caprolactone) (PCL) to fabricate a novel biodegradable polymer composite. PCL/sc-PLA composites were prepared by solution casting at sc-PLA loadings of 5-30 wt %. Differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) demonstrated the formation of the stereocomplex in the blends. DSC and WAXD curves also indicated that the addition of sc-PLA did not alter the crystal structure of PCL. Rheology and mechanical properties of neat PCL and the PCL/sc-PLA composites were investigated in detail. Rheological measurements indicated that the composites exhibited evident solid-like response in the low frequency region as the sc-PLA loadings reached up to 20 wt %. Moreover, the long-range motion of PCL chains was highly restrained. Dynamic mechanical analysis showed that the storage modulus (E 0 ) of PCL in the composites was improved and the glass transition temperature values were hardly changed after the addition of sc-PLA. Tensile tests showed that the Young's modulus, and yield strength of the composites were enhanced by the addition of sc-PLA while the tensile strength and elongation at break were reduced.

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“…Akos et al [89,90] prepared blends of poly(ε-caprolactone) (PCL) and PLA reinforced with Dura and Tenera palm press fibers. Dicumyl peroxide (DCP) was used as compatibilizerfor the blend system and resulted in good interfacial adhesion between the matrix and the reinforcements and thereby increased the mechanical properties of the composites.…”

Section: Pla and Natural Fibersmentioning

confidence: 99%

Polyblends and composites of poly (lactic acid) (PLA): a review on the state of the art

Rajan¹,

Thomas²,

Gopanna³

et al. 2018

J. Polym. Sci. Eng.

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Polymers obtained from renewable sources are gaining popularity over their petroleum based counter parts in recent years due to their capability to address the environmental pollution related concerns emanating from the widespread usage of synthetic polymers. Even though the polymers from renewable sources are attractive in an environmental point of view, some of the property limitations and the high cost of these materials pose limitations for their extensive commercial applications. These aspects opened the door for a large chunk of research activities in development of polyblends and composites containing polymers from renewable sources as one of the components. Poly (lactic acid) (PLA) is one of the most discussed and commercialized polymer originated from renewable resources. Even though it has many useful properties, certain disadvantages like high brittleness, low impact resistance etc. limit the wide spread commercialization of PLA. In this review article, the recent research activities which are aimed to fill this gap by various modifications of PLA are discussed with special emphasis on the latest research advancements in the field of biodegradable and non biodegradable systems containing PLA.

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Preparation, characterization, and mechanical properties of poly(ε‐caprolactone)/polylactic acid blend composites

Cited by 33 publications

References 34 publications

Super-Toughened Poly(lactic Acid) with Poly(ε-caprolactone) and Ethylene-Methyl Acrylate-Glycidyl Methacrylate by Reactive Melt Blending

Super-Toughened Poly(lactic Acid) with Poly(ε-caprolactone) and Ethylene-Methyl Acrylate-Glycidyl Methacrylate by Reactive Melt Blending

Toward environment‐friendly composites of poly(ε‐caprolactone) reinforced with stereocomplex‐type poly(l‐lactide)/poly(d‐lactide)

Polyblends and composites of poly (lactic acid) (PLA): a review on the state of the art

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