Novel super-toughened bio-based blend from polycarbonate and poly(lactic acid) for durable applications

Yuryev, Yury; Mohanty, Amar K.; Misra, Manjusri

doi:10.1039/c6ra21208e

Cited by 33 publications

(42 citation statements)

References 30 publications

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“…This highly reactive compound prevents the excessive decrease in the polymer molecular weight through the branching of the polymer chains. In the case of the presented research work, the used modifier was Joncryl 4368C, whose effectiveness has been confirmed by numerous studies, 38,39 including those on PC. In the case of the described studies, a 0.5% addition was determined experimentally and corresponded with the manufacturer recommendations.…”

Section: Processing Stability: Pc Matrix Degradationsupporting

confidence: 55%

“…Joncryl ADR 4368 (a product of BASF, Ludwigshafen, Germany) is commonly used as a multifunctional reactive copolymer with its high epoxy equivalent weight of 285 g/mol. This type of CE is partially miscible in many polyesters, including Poly(ethylene terephthalate) (PET), Poly(lactic acid) (PLA), and PC, and has been reported several times . The typical application of this type of reactive modifier is its use during the processing of recycled materials, where the degradation issues caused by increased moisture concentration are a very common problem.…”

Section: Methodsmentioning

confidence: 99%

“…This type of CE is partially miscible in many polyesters, including Poly(ethylene terephthalate) (PET), Poly(lactic acid) (PLA), and PC, and has been reported several times. 38,39 The typical application of this type of reactive modifier is its use during the processing of recycled materials, where the degradation issues caused by increased moisture concentration are a very common problem. In the presented cases of PC-based composites, it can also be used to limit the negative effects of moisture in the presence of BC filler, whereas the drying treatments do not bring the expected results.…”

Section: Methodsmentioning

confidence: 99%

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Polycarbonate biocomposites reinforced with a hybrid filler system of recycled carbon fiber and biocarbon: Preparation and thermomechanical characterization

Andrzejewski

Misra

2018

J of Applied Polymer Sci

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In this article, we present the investigation of the use of a partly biobased hybrid reinforcement system to improve the mechanical properties of polycarbonate (PC). To minimize the amount of recycled carbon fibers (rCFs) used in this study, their initial quantity of 20% was reduced and replaced by pyrolyzed biocarbon (BC) particles in amounts of 5%, 10%, 15%, and 20%. The materials were prepared during an extrusion‐/injection‐molding processing procedure. In addition to basic mechanical tests (tensile, flexural, and Izod tests), the samples were also subjected to detailed dynamic mechanical analysis to determine the thermomechanical relationships, such as the C factor, entanglement density, adhesion factor, and reinforcing efficiency. The results confirm the positive effect of hybridization, especially for the samples with low BC contents. In relation to the 20% pure BC composites, the hybrid samples containing the same amount of mixed filler (10%; rCF10–BC10) achieved an almost triple (270%) increase in the tensile strength and a 35% increase in the modulus. The impact resistance was also increased by 170%. Differential scanning calorimetry analysis showed significant changes in the glass‐transition temperatures for the BC‐rich samples; this was due to the sensitivity of the PC matrix to the processing degradation. The application of a small quantity of epoxy‐based chain extender proved to be effective in reducing this unfavorable phenomenon. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46449.

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Section: Processing Stability: Pc Matrix Degradationsupporting

confidence: 55%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Polycarbonate biocomposites reinforced with a hybrid filler system of recycled carbon fiber and biocarbon: Preparation and thermomechanical characterization

Andrzejewski

Misra

2018

J of Applied Polymer Sci

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“…The popularity of melt blending technology results from its low cost; typically this method of polymer modification does not require any additional treatments and is conducted at the stage of the preparation of polymer compositions, where the composition of matrix polymers is compounded with other additives, modification. The first one involved the introduction of a rubbery impact modifier, ethylene/butyl acrylate/glycidyl methacrylate terpolymer (E/BA/GMA), a material which has already been successfully applied to PLA-based blends [14,21,42] and POM/PLA blends [31]. The second method was based on the use of reactive blending and phase compatibilization using epoxy functionalized oligomers.…”

Section: Introductionmentioning

confidence: 99%

Improving the Toughness and Thermal Resistance of Polyoxymethylene/Poly(lactic acid) Blends: Evaluation of Structure–Properties Correlation for Reactive Processing

2020

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The study focuses on the development of polyoxymethylene (POM)/poly(lactic acid) (PLA) blends with increased impact and thermal resistance. The study was conducted in two phases; in the first part, a series of unmodified blends with PLA content of 25, 50, and 75 wt.% was prepared, while the second part focused on the modification of the PLA/POM (50/50) blends. An ethylene/butyl acrylate/glycidyl methacrylate terpolymer (E/BA/GMA) elastomer (EBA) was used to improve the impact strength of the prepared blends, while reactive blending was used to improve interfacial interactions. We used a multifunctional epoxy chain extender (CE) as the compatibilizer. Static tensile tests and notched Izod measurement were used to evaluate the mechanical performance of the prepared samples. The thermomechanical properties were investigated using dynamic mechanical thermal analysis (DMTA) analysis and heat deflection temperature (HDT)/Vicat softening temperature (VST) methods. The crystallinity was measured using differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXS) measurements, while the rheology was evaluated using a rotational rheometer. The paper also includes a structure analysis performed using the SEM method. The structural tests show partial miscibility of the POM/PLA systems, resulting in the perfect compatibility of both phases. The impact properties of the final blends modified by the EBA/CE system were found to be similar to pure POM resin, while the E modulus was visibly improved. Favorable changes were also noticeable in the case of the thermomechanical properties. The results of most of the conducted measurements and microscopic observations confirm the high efficiency of the reaction for PLA as well as for the modified POM/PLA mixtures.

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“…Biodegradable polymers such as polylactic acid, polyglycolic acid, polylactic‐co‐glycolic acid, and poly(ε‐caprolactone) (PCL) can undergo hydrolysis and have all been used to fabricate tissue engineering scaffolds. However, these materials lack a proper elasticity matching that of living tissue . Polyurethane (PU) is one of the most widely used polymers in biomedical applications because of its good biocompatibility and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Curcumin‐loaded biodegradable polyurethane scaffolds modified with gelatin using 3D printing technology for cartilage tissue engineering

Lee

Kim

Park

et al. 2019

Polymers for Advanced Techs

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We described the curcumin-loaded biodegradable polyurethane (PU) scaffolds modified with gelatin based on three-dimensional (3D) printing technology for potential application of cartilage regeneration. The printing solution of poly(ε-caprolactone) (PCL) triol (polyol) and hexamethylene diisocyanate (HMDI) in 2,2,2-trifluoroethanol was printed through a nozzle in dimethyl sulfoxide phase with or without gelatin.The weight ratio of HMDI against PCL triol was varied as 3, 5, and 7 in order to evaluate its effect on the mechanical properties and biodegradation rate. A higher ratio of HMDI resulted in higher mechanical properties and a lower biodegradation rate. The use of gelatin increased the mechanical properties, biodegradation rate, and curcumin release due to the surface cross-linking, nanoporous structure, and surface hydrophilicity of the scaffolds. In vitro study revealed that the released curcumin enhanced the proliferation and differentiation of chondrocyte. The 3D-printed biodegradable PU scaffold modified with gelatin should thus be considered as a potential candidate for cartilage regeneration.

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Novel super-toughened bio-based blend from polycarbonate and poly(lactic acid) for durable applications

Abstract: Novel high-performance bio-based PC/PLA blends are created via high-temperature reactive blending, using targeted toughening of the brittle phase.

Cited by 33 publications

References 30 publications

Polycarbonate biocomposites reinforced with a hybrid filler system of recycled carbon fiber and biocarbon: Preparation and thermomechanical characterization

Polycarbonate biocomposites reinforced with a hybrid filler system of recycled carbon fiber and biocarbon: Preparation and thermomechanical characterization

Improving the Toughness and Thermal Resistance of Polyoxymethylene/Poly(lactic acid) Blends: Evaluation of Structure–Properties Correlation for Reactive Processing

Curcumin‐loaded biodegradable polyurethane scaffolds modified with gelatin using 3D printing technology for cartilage tissue engineering

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