Effect of Blending Procedure on Tensile and Degradation Properties of Toughened Biodegradable Poly(lactic acid) Blend with Poly(trimethylene terephthalate) and Reactive Compatibilizer

Kultravut, Katanyu; Kuboyama, Keiichi; Ougizawa, Toshiaki

doi:10.1002/mame.201900323

Cited by 11 publications

(14 citation statements)

References 40 publications

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“…To overcome the shortcomings of PLA, various organic and inorganic fillers have been introduced as reinforcing materials to develop PLA‐dominant blends and composites. [ 5,11–23 ] The stereocomplexation ability of PLA isomers has been also proposed as an effective method for enhancing the thermal and mechanical properties. [ 24,25 ] Some researchers have explored the potential of blending PLA with conventional polymers to improve performance and lower prices by investigating the blends in terms of miscibility, morphology, thermal, and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Highly Tough and Thermally Stable Polylactide Blends Compatibilized with Glycidyl Methacrylate‐Grafted Polypropylene

Lee

Hwang

Kwon

et al. 2021

Macro Materials & Eng

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To attain eco‐friendly and sustainable polylactide (PLA) materials possessing highly enhanced toughness, thermal stability, and processability without significant loss in elastic modulus, for the first time, PLA‐dominant blends with 1–30 wt% glycidyl methacrylate‐grafted polypropylene (PPGMA) loadings are fabricated via an efficient masterbatch melt‐compounding process. For the purpose, PPGMA is fabricated via in situ grafting reaction of PP with GMA and styrene. The scanning electron microscope images reveal that PLA/PPGMA blends do not show recognizable phase‐separated domains, unlike immiscible PLA/PP blends. The Fourier‐transform infrared spectroscopic and melt‐rheological analyses support the presence of specific interactions between PLA and PPGMA as well as the compatibilizing effect of PPGMA‐g‐PLA formed during the melt‐compounding. The thermal analyses demonstrate that PPGMA component accelerates the crystallization of PLA in the blends and that the thermal decomposition temperatures of PLA/PPGMA blends are higher than those of neat PLA and PPGMA components. The dynamic mechanical analysis shows that a maximum storage modulus is attained for PLA‐dominant blend with 30 wt% PPGMA. Noticeably, the impact strength (≈305.6 J m−1) of PLA‐dominant blend with only 5 wt% PPGMA loading is almost three times higher than that (≈111.6 J m−1) of neat PLA and it is very comparable to the value (≈316.9 J m−1) of neat PP.

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Section: Introductionmentioning

confidence: 99%

Highly Tough and Thermally Stable Polylactide Blends Compatibilized with Glycidyl Methacrylate‐Grafted Polypropylene

Lee

Hwang

Kwon

et al. 2021

Macro Materials & Eng

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“…In recent years, more and more biodegradable polymers were used to toughen PLA. [26][27][28][29][30][31][32][33][34] Ojijo Vincent et al prepared PLA/PBSA blends. 29 For a blend containing 40 wt% PBSA and 0.6 wt% chain extender, the impact strength of PLA was increased from 4.6 to 38.4 kJ/m 2 .…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, more and more biodegradable polymers were used to toughen PLA 26‐34 . Ojijo Vincent et al prepared PLA/PBSA blends 29 .…”

Section: Introductionmentioning

confidence: 99%

Highly toughened poly(lactic acid) blends prepared by reactive blending with a renewable poly(ether‐block‐amide) elastomer

Xia

Wang

Feng

et al. 2020

J of Applied Polymer Sci

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Renewable poly(ether-block-amide) (PEBA) elastomer was grafted with glycidyl methacrylate (GMA) to prepare PEBA-GMA, then it was melting blended with poly (lactic acid) (PLA) in an effort to achieve fully bio-based super-toughened PLA materials. The notched Izod impact strength of PLA/PEBA-GMA blend was significantly enhanced when the content of PEBA-GMA was higher than 20 wt%, and the tensile toughness was also improved. It was found a new copolymer was formed at the interface due to the reaction of the end groups (OH, COOH) of PLA with the epoxide group of PEBA-GMA. This greatly improves the interfacial adhesion between PLA and PEBA-GMA component, leading to finer dispersed particles of PEBA-GMA which were better wetted by the PLA matrix. Therefore, the highly enhanced notched impact strength was ascribed to the effective reactive compatibilization promoted by the interfacial reaction. This provides a new idea for preparing super tough PLA materials with bio-based elastomer, which will widely extend the application of PLA.

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“…For preparation of the composite material, two-step blending was performed on the basis of our previous research . In that study, toughening of PLA by blending with PTT was performed using the reactive compatibilizer of PEGMA.…”

Section: Methodsmentioning

confidence: 99%

“…To prepare the interfacial localization of the modified filler in cocontinuous immiscible polymer blend, a blend of biobased poly(lactic acid) (PLA) with a partially biobased aromatic polyester, poly(trimethylene terephthalate) (PTT), was adopted based on our previous studies. , Previous results have shown that the tensile properties of the PLA/PTT blend have been significantly enhanced by improved interfacial adhesion between PLA and PTT using a reactive compatibilizer, poly(ethylene- co -glycidyl methacrylate) (PEGMA). The epoxy group of the glycidyl methacrylate (GMA) part in the PEGMA reacted with the end groups of both PLA and PTT, and then, PEGMA was located at the interface between PLA and PTT.…”

Section: Introductionmentioning

confidence: 99%

Localization of Poly(glycidyl methacrylate) Grafted on Reduced Graphene Oxide in Poly(lactic acid)/Poly(trimethylene terephthalate) Blends for Composites with Enhanced Electrical and Thermal Conductivities

Kultravut

Kuboyama

Sedlařík

et al. 2021

ACS Appl. Nano Mater.

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Interfacial localization of conductive fillers in a cocontinuous immiscible polymer blend is an efficient way of improving the electrical and thermal conductivities of the composite. Conductive path formation at the interface of a cocontinuous structure is expected to provide high conductivity by a smaller amount of the filler, which can be used for applications as conductive materials. In this study, biobased poly(lactic acid) (PLA) was blended with poly(trimethylene terephthalate) (PTT) to make the cocontinuous immiscible polymer blend. Poly(glycidyl methacrylate) (PGMA) was grafted on reduced graphene oxide (rGO) to make a PGMA-grafted rGO (rGO-PGMA). The epoxy group of GMA on rGO-PGMA reacted with the end groups of both PLA and PTT and localized at the interface between PLA and PTT by a two-step blending procedure to form the conductive path between PLA and PTT. From transmission electron microscopy observation, it was found that rGO-PGMA localized between the interface of PLA and PTT. Both electrical and thermal conductivities of the composite were improved, which was confirmed by the electrical volume resistivity and thermal diffusivity measurements, compared with neat polymers and other blends.

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Effect of Blending Procedure on Tensile and Degradation Properties of Toughened Biodegradable Poly(lactic acid) Blend with Poly(trimethylene terephthalate) and Reactive Compatibilizer

Cited by 11 publications

References 40 publications

Highly Tough and Thermally Stable Polylactide Blends Compatibilized with Glycidyl Methacrylate‐Grafted Polypropylene

Highly Tough and Thermally Stable Polylactide Blends Compatibilized with Glycidyl Methacrylate‐Grafted Polypropylene

Highly toughened poly(lactic acid) blends prepared by reactive blending with a renewable poly(ether‐block‐amide) elastomer

Localization of Poly(glycidyl methacrylate) Grafted on Reduced Graphene Oxide in Poly(lactic acid)/Poly(trimethylene terephthalate) Blends for Composites with Enhanced Electrical and Thermal Conductivities

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