Poly(lactic acid)-based polymer composites with high electric and thermal conductivity and their characterization

Lebedev, S.M.; Gefle, O.S.; Amitov, E. T.; Berchuk, D.; Zhuravlev, Denis

doi:10.1016/j.polymertesting.2016.12.033

Cited by 90 publications

(51 citation statements)

References 19 publications

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“…In this paper, our main attention is focused on the effects of noncovalent TA functionalization of GNPs on the thermal conductivity of nanocomposites. Poly(lactic acid) (PLA) is selected as the polymeric matrix in this study because environmentally friendly PLA as an alternative to petroleum‐based polymers has been widely applied in engineering applications such as electronic and electrical devices, mechanical parts, automotive parts, and three‐dimensional printing materials for fused deposition modeling . PLA‐based nanocomposites with TA‐functionalized GNPs were first prepared (Figure ), and the uniform dispersion of GNPs in the nanocomposites and enhanced mechanical properties and thermal conductivity were observed.…”

Section: Introductionmentioning

confidence: 99%

Enhanced thermal conductivity of PLA‐based nanocomposites by incorporation of graphite nanoplatelets functionalized by tannic acid

Lin

Pei

Zhang

2018

J of Applied Polymer Sci

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Enhancing thermal conductivity of polymeric nanocomposites remains a great challenge because of the poor compatibility between nanofillers and the polymeric matrix and the aggregation effect of nanofillers. We report the enhanced thermal conductivity of poly(lactic acid) (PLA)-based nanocomposites by incorporation of graphite nanoplatelets functionalized by tannic acid. Graphite nanoplatelets (GNPs) were noncovalently functionalized with tannic acid (TA) by van der Waals forces and p-p interaction without perturbing the conjugated sp 2 network, thus preserving the high thermal conductivity of GNPs. PLA-based nanocomposites with different contents of TA-functionalized GNPs (TA-GNPs) were prepared and characterized, and the influences of TA-GNPs content on the morphologies, mechanical properties, and thermal properties of the composites were investigated in detail. TA-GNPs remarkably improved the thermal conductivity of PLA up to 0.77 W/(m K), showing its high potential as a thermally conductive filler for polymer-based nanocomposites.

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Section: Introductionmentioning

confidence: 99%

Enhanced thermal conductivity of PLA‐based nanocomposites by incorporation of graphite nanoplatelets functionalized by tannic acid

Lin

Pei

Zhang

2018

J of Applied Polymer Sci

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“…From the SEM micrographs, the Cu 2 O particles are uniformly dispersed in the polymer matrix. However, for a substantial increase in thermal conductivity, the Cu 2 O particles should come in contact with each other to form a percolated network structure . The percolated structure is absent from the SEM micrographs and therefore, only a marginal increase in thermal conductivity is observed for the composites.…”

Section: Resultsmentioning

confidence: 99%

Thermomechanical, water absorption, ultraviolet resistance and laser‐assisted electroless plating behavior of Cu₂O and melamine–formaldehyde‐coated sisal fiber‐modified poly(lactic acid) composites

2019

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Poly(lactic acid) (PLA)/Cu2O composites and melamine–formaldehyde‐coated sisal fibers (MF‐sisal fibers) modified PLA/Cu2O hybrid composites were prepared. The effect of Cu2O and MF‐sisal fibers on the tensile properties, fracture morphology, crystallinity, thermal and electrical conductivity, thermal stability, water absorption, UV resistance, and laser‐assisted metallization by electroless plating were systematically studied. The addition of MF‐sisal fibers recompensed the tensile properties (strength and elongation at break [EB]) and thermal stability of the PLA/Cu2O composites. The crystallinity, thermal conductivity, and electrical conductivity of the PLA matrix marginally increased in the presence of Cu2O and MF‐sisal fibers. The water absorption was reduced for the PLA/Cu2O composites but increased for the MF‐sisal fibers modified PLA/Cu2O hybrid composites due to the presence of free hydroxyl groups present in the MF‐sisal fibers. The presence of Cu2O obstructed the UV transmission through the PLA composites and hybrid composites, clearly showing the UV shielding efficiency of the Cu2O particles. The samples were irradiated with fiber pulse laser for metallization by electroless plating. The SEM micrographs of the irradiated samples revealed an increase in surface roughness with increasing fluence. Further, Talysurf series 2 was used to quantify the roughness of the irradiated composites. Finally, the laser treated samples were selectively metallized by electroless plating. POLYM. COMPOS., 40:3264–3274, 2019. © 2019 Society of Plastics Engineers

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“…It was found that the polylactic acid (PLA) exhibits suitable thermal properties among the materials used in RP technology. The PLA belongs to a group of biopolymers and it is biodegradable aliphatic polyester produced from renewable sources [7,13,14]. The PLA has a wide range of applications due to its organic origin and biocompatible properties [3].…”

Section: Introductionmentioning

confidence: 99%

Performance of thermal insulation fabricated by rapid prototyping technology

2019

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Nowadays, 3-D printing technology is very often applied in industry due to design cycles shortening and surface quality improvement when comparing to conventional manufacturing technologies. In order to adapt 3-D printed materials as thermal barriers, it is necessary to determine its thermophysical properties. As far as thermal insulation is concerned, the lowest thermal conductivity is required and therefore the crucial parameter of the material is the porosity. This paper presents the results of experimental investigation of effective thermal conductivity of thermal barriers with variable porosity fabricated by the fused filament fabrication technology. Also the numerical study was presented. The commercial code-COMSOL multiphysics was used to model the coupled heat transfer. The model was than validated by comparing the numerical and experimental results. For each sample the density and thermal conductivity were determined experimentally. The influence of the size and shape of the cell on the formation of free convection was investigated in particular. The effect of the conduction and radiation on temperature and velocity profiles within the enclosure has been analyzed. In addition, the dominant heat transfer mechanisms as a function of density have been identified.

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Poly(lactic acid)-based polymer composites with high electric and thermal conductivity and their characterization

Cited by 90 publications

References 19 publications

Enhanced thermal conductivity of PLA‐based nanocomposites by incorporation of graphite nanoplatelets functionalized by tannic acid

Enhanced thermal conductivity of PLA‐based nanocomposites by incorporation of graphite nanoplatelets functionalized by tannic acid

Thermomechanical, water absorption, ultraviolet resistance and laser‐assisted electroless plating behavior of Cu₂O and melamine–formaldehyde‐coated sisal fiber‐modified poly(lactic acid) composites

Performance of thermal insulation fabricated by rapid prototyping technology

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Poly(lactic acid)-based polymer composites with high electric and thermal conductivity and their characterization

Cited by 90 publications

References 19 publications

Enhanced thermal conductivity of PLA‐based nanocomposites by incorporation of graphite nanoplatelets functionalized by tannic acid

Enhanced thermal conductivity of PLA‐based nanocomposites by incorporation of graphite nanoplatelets functionalized by tannic acid

Thermomechanical, water absorption, ultraviolet resistance and laser‐assisted electroless plating behavior of Cu2O and melamine–formaldehyde‐coated sisal fiber‐modified poly(lactic acid) composites

Performance of thermal insulation fabricated by rapid prototyping technology

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Thermomechanical, water absorption, ultraviolet resistance and laser‐assisted electroless plating behavior of Cu₂O and melamine–formaldehyde‐coated sisal fiber‐modified poly(lactic acid) composites