The effect of nanoparticles shape on the mechanical properties of poly lactic acid matrix

Daneshpayeh, Sajjad; Ghasemi, Faramarz Ashenai; Ghasemi, Ismaeil

doi:10.1177/0095244320988168

Cited by 7 publications

(8 citation statements)

References 30 publications

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“…[4,5] The dispersion of small nanofiller contents (0.5%-5%) provides significant improvements in the mechanical, thermal, thermomechanical, magnetic, and electrical properties of polymers. [6][7][8] Different nanofillers have been applied in polymer nanocomposites, with special attention given to carbon nanotubes. [9,10] Carbon nanotubes have emerged as promising materials due to their exceptional properties, such as high mechanical strength, high elastic modulus, high thermal conductivity, good chemical stability, low density, and good electrical properties.…”

Section: Introductionmentioning

confidence: 99%

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Electrical nanocomposites of PA6/ABS/ABS‐MA reinforced with carbon nanotubes (MWCNTf) for antistatic packaging

et al. 2022

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Herein, we prepared toughened and electrical nanocomposites of polyamide 6 (PA6)/acrylonitrile‐butadiene‐styrene (ABS) compatibilized with maleic anhydride‐grafted acrylonitrile‐butadiene‐styrene (ABS‐MA). Functionalized multi‐walled carbon nanotubes (MWCNTf) were used as conductive nanofillers. Nanocomposites were processed in an internal mixer and injection molded. Torque rheometry, impact strength, elastic modulus, heat deflection temperature (HDT), differential exploratory calorimetry (DSC), melting and crystallization kinetic curves, electrical conductivity, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were evaluated. Torque increased with the MWCNTf content in the PA6/ABS/ABS‐MA/MWCNTf nanocomposites, suggesting an increase in viscosity. The MWCNTf were well dispersed in the nanocomposites, generating an electrical percolation path. The impact strength of the PA6/ABS/ABS‐MA/MWCNTf nanocomposites was superior to that of pure PA6, indicating improved flexibility and toughness. The addition of 1 pcr of MWCNTf in the PA6/ABS/ABS‐MA system was sufficient for antistatic application, with a 221% higher impact strength, compared to pure PA6. The DSC studies showed that the crystallization temperature of the nanocomposites shifted to higher temperatures. This was due to the MWCNTf that accelerated crystallization. Additionally, the nanocomposites HDT increased by 20°C compared to the PA6 matrix, suggesting a superior thermomechanical strength. The developed nanocomposites show improved mechanical, electrical, and thermomechanical properties. Therefore, they exhibit great technological potential for application in antistatic packaging.

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Section: Introductionmentioning

confidence: 99%

“…[ 4,5 ] The dispersion of small nanofiller contents (0.5%–5%) provides significant improvements in the mechanical, thermal, thermomechanical, magnetic, and electrical properties of polymers. [ 6–8 ] Different nanofillers have been applied in polymer nanocomposites, with special attention given to carbon nanotubes. [ 9,10 ]…”

Section: Introductionmentioning

confidence: 99%

Electrical nanocomposites of PA6/ABS/ABS‐MA reinforced with carbon nanotubes (MWCNTf) for antistatic packaging

et al. 2022

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“…10 Polymer matrices reinforced with nano-fillers including silica, titanium, Nano-clay, calcium carbonate, and carbon nano-fillers have attracted the attention of many scientists and craftsmen in recent decades due to their more excellent physical, mechanical, and thermal properties. 14,15 Garcia et al 16 achieved a 30% increase in elastic modulus and a 68% increase in impact strength by adding nano-silica (Sio2) to the polypropylene matrix. Liu et al 17 increased the tensile strength of the LLDPE/LDPE (Linear Low-density polyethylene/ Low-density polyethylene) compounds by adding 3 wt% titanium particles (TiO 2 ) into the binary matrix.…”

Section: Introductionmentioning

confidence: 99%

Optimization of impact strength and elastic modulus of polyamide-based nanocomposites: Using particle swarm optimization method

Panahizadeh,

Hamidi,

Daneshpayeh

et al. 2024

Journal of Elastomers & Plastics

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In the current paper, the mechanical properties of polymeric nanocomposites based on a two-phase PA6/EPDM matrix reinforced with carbon nanotubes have been optimized. The compounds consist of 0, 1, 2, and 3 wt% carbon nanotubes, 5 and 10 wt% EPDM-g-MA as a compatibilizer, and 10 and 20 wt% EPDM were made by an internal mixer. The mechanical tests were done to measure mechanical properties of the samples. In addition, SEM images were used to investigate the dispersion quality of nanotubes in the polymer matrix. From SEM findings, adding up to 2 wt% nanotubes in the matrix accompanied with a proper distribution and dispersion, whereas adding 3 wt% nanotubes into matrix results in inappropriate dispersion and agglomeration. Furthermore, samples including high level of EPDM-g-MA displayed better dispersion of nanotubes in the matrix. Moreover, the findings of mechanical tests depicted that the presence of EPDM and compatibilizing agent causes 12.5% and 22% increase in impact strength, respectively. Furthermore, the addition of nanotubes up to 2 wt% has enhanced the elastic modulus of the compounds. Finally, the optimization results of the PSO method indicate that adding 13.31 wt% EPDM, 9.91 wt% EPDM-g-MA and 2.61 wt% nanotubes progress the elastic modulus (by 36%) and impact strength (by 33%) of the matrix.

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“…9 Researchers have made many efforts to overcome these weaknesses of PLA. For this purpose, copolymerization, 10 composite preparation, 7,[11][12][13] and blending with other polymers 14 have been studied. Blending is followed chiefly because it is cost-effective and easy to produce.…”

Section: Introductionmentioning

confidence: 99%

Enhanced strength and toughness of polylactic acid by blending with modified natural rubber having acetate pendant group

Ozbay

Gumus

2023

Journal of Elastomers & Plastics

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Among biobased and biodegradable polymers, polylactic acid (PLA) is most widely used one. However, its poor mechanical properties need to be enhanced. In this study, PLA blend film with improved mechanical properties were developed without compromising any bio-content. For this, natural rubber derivative with acetate pendant group (ANR) and PLA blend films were prepared. First, natural rubber was epoxidized, and then partial acetylation was achieved by the ring-opening reaction of the epoxy groups. The epoxidation and the acetylation were examined by FTIR analysis. 1H-NMR spectrum revealed a 29% epoxidation and 8.25% acetylation degree. The Tg of natural rubber (−66°C) increased to −41°C and −31°C after epoxidation and acetylation, respectively. The compatibility of ENR and ANR with PLA was evident from the DSC results and Molau test. The morphology of PLA blend film containing 25 wt% of ANR (ANR25) was observed as well-dispersed fine droplets by SEM images. The tensile strength, elastic modulus, and yield strength of ANR25 were measured as 11.6 MPa, 397.3 MPa, and 6.9 MPa, respectively. These values are considerably higher than neat PLA film. Compared to reported studies on PLA toughening so far, increments in both the strength and elongation of ANR25 were observed by tensile tests. Moreover, highest toughness among all samples was determined as 18.8 MJm−3 for ANR25, which is 1.8 times higher than neat PLA. Thus, a strong and tough bio-based PLA blend was developed for film application such as packaging and sheeting.

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The effect of nanoparticles shape on the mechanical properties of poly lactic acid matrix

Cited by 7 publications

References 30 publications

Electrical nanocomposites of PA6/ABS/ABS‐MA reinforced with carbon nanotubes (MWCNTf) for antistatic packaging

Electrical nanocomposites of PA6/ABS/ABS‐MA reinforced with carbon nanotubes (MWCNTf) for antistatic packaging

Optimization of impact strength and elastic modulus of polyamide-based nanocomposites: Using particle swarm optimization method

Enhanced strength and toughness of polylactic acid by blending with modified natural rubber having acetate pendant group

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