Enhanced (thermo)mechanical properties in biobased poly(<scp>l</scp>‐<scp>lactide</scp>)/poly(amide‐12) blends using high shear extrusion processing without compatibilizers

Raj, Amulya; Samuel, C.; Nagalakshmaiah, Malladi; Prashantha, K.

doi:10.1002/pen.25426

Cited by 11 publications

(9 citation statements)

References 38 publications

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“…Its enhanced toughness properties and its ability to widely extend before it breaks are some of its merits for utilization in 3D printing [ 11 , 13 , 29 , 38 ], while its flow behavior is trouble-free for both the extrusion and the 3D printing process [ 37 ]. Additionally, it has very good behavior when mixed with additives for the improvement of its properties [ 38 , 55 ]. Finally, its performance does not seem to degrade even after five (5) recycling loops [ 37 ].…”

Section: Introductionmentioning

confidence: 99%

Development and Optimization of Medical-Grade Multi-Functional Polyamide 12-Cuprous Oxide Nanocomposites with Superior Mechanical and Antibacterial Properties for Cost-Effective 3D Printing

et al. 2022

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In the current study, nanocomposites of medical-grade polyamide 12 (PA12) with incorporated copper (I) oxide (cuprous oxide-Cu2O) were prepared and fully characterized for their mechanical, thermal, and antibacterial properties. The investigation was performed on specimens manufactured by Fused Filament Fabrication (FFF) and aimed to produce multi-purpose geometrically complex nanocomposite materials that could be employed in medical, food, and other sectors. Tensile, flexural, impact and Vickers microhardness measurements were conducted on the 3D-printed specimens. The fractographic inspection was conducted utilizing scanning electron microscopy (SEM), to determine the fracture mechanism and qualitatively evaluate the process. Moreover, the thermal properties were determined by thermogravimetric analysis (D/TGA). Finally, their antibacterial performance was assessed through a screening method of well agar diffusion. The results demonstrate that the overall optimum performance was achieved for the nanocomposites with 2.0 wt.% loading, while 0.5 wt.% to 4.0 wt.% loading was concluded to have discrete improvements of either the mechanical, the thermal, or the antibacterial performance.

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Section: Introductionmentioning

confidence: 99%

Development and Optimization of Medical-Grade Multi-Functional Polyamide 12-Cuprous Oxide Nanocomposites with Superior Mechanical and Antibacterial Properties for Cost-Effective 3D Printing

et al. 2022

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“…Ultra-high speed shear processing technology, which is used to improve the compatibility of incompatible blends, polymer/filler, blend/filler systems by applying high shear stress and blending only by adjusting the screw speed (above 1000 rpm). In recent years, ultra-high speed shearing has been reported for biodegradable polymer blends such as PLA/polyamide 12 (PA12) 59 and PLA/ olefin block copolymer (OBC)/ethylene glycidyl methacrylate (EGMA) 60 . It has been found that ultra-high speed shearing can improve the blend morphology and affect the final mechanical properties of the products.…”

Section: Other Processing Techniquesmentioning

confidence: 99%

“…At present, the main research works carried out by scholars in this field are introduced as below (Figure 1). 32,[42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61]…”

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confidence: 99%

Eco-friendly biodegradable polymers: Sustainable future

Kuang

Esmaeili

Ehsani

2022

Polymers from Renewable Resources

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Polymers are among the most important materials and their applications permeate all areas of production and life. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] They are essential, but they are also often seen as a modern-day scourge, especially in terms of their negative impact on the environment. 17-21 For example, tens of millions of tons of waste plastic particles are discarded into the ocean every year, negatively impacting marine biodiversity 22 ; not to mention the large amounts of fossil fuels used to produce these plastics. The increasingly serious environmental pollution problem has led to a worldwide plastic restriction and ban, and the use of renewable and environmentally friendly biodegradable polymers and its composites is considered to be one of the effective ways to solve this problem. [23][24][25][26][27][28][29][30][31][32] The application of biodegradable polymers and its composites can not only effectively solve the problem of white pollution and reduce the dependence of synthetic polymers on petroleum resources but also help to reduce excessive greenhouse gas emissions and promote the high-value utilization of biomass resources, which is in line with the goal of sustainable development and the core concept of circular economy. [33][34][35][36][37][38] However, the current challenge is that compared with general-purpose plastics and engineering plastics, biodegradable polymers and its composites still have many performance bottlenecks, such as low/limited strength, poor toughness, low modulus, poor heat resistance, and lack of functionality, which greatly limit their application in high value-added and high performance requirements. 39 Therefore, the processing of high-performance biodegradable polymers and its composites has become an important research area in polymer science and technology today.For a biodegradable polymeric materials with known physical properties, morphology control is an important way to achieve high-performance materials without changing the proximal structure, composition, and components of the molecular chain. 40 Traditional polymer processing techniques, such as extrusion, injection molding, blow molding, compression molding and spinning, have mild effects on the morphological structure of polymeric materials. They are not able to significantly

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“…For AM technologies, the reported disadvantages are mainly related to poor fusion [13,20] and anisotropic behavior [8], which is usually due to layer-by-layer adhesion quality issues. To improve the performance of the 3D-printed parts, much research has been conducted regarding the selection of 3D printing parameters [21], such as layer height [20][21][22][23][24], extrusion temperature [22][23][24][25][26], infill pattern [4,27] and ratio, etc. Another way to improve such anisotropy in mechanical and other properties is to create new composite materials [28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Performance of Fused Filament Fabricated and 3D-Printed Polycarbonate Polymer and Polycarbonate/Cellulose Nanofiber Nanocomposites

Vidakis

Petousis

Velidakis

et al. 2021

Fibers

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In this study, nanocomposites were fabricated with polycarbonate (PC) as the matrix material. Cellulose Nanofiber (CNF) at low filler loadings (0.5 wt.% and 1.0 wt.%) was used as the filler. Samples were produced using melt mixing extrusion with the Fused Filament Fabrication (FFF) process. The optimum 3D-printing parameters were experimentally determined and the required specimens for each tested material were manufactured using FFF 3D printing. Tests conducted for mechanical performance were tensile, flexural, impact, and Dynamic Mechanical Analysis (DMA) tests, while images of the side and the fracture area of the specimens were acquired using Scanning Electron Microscopy (SEM), aiming to determine the morphology of the specimens and the fracture mechanism. It was concluded that the filler’s ratio addition of 0.5 wt.% created the optimum performance when compared to pure PC and PC CNF 1.0 wt.% nanocomposite material.

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Enhanced (thermo)mechanical properties in biobased poly(l‐lactide)/poly(amide‐12) blends using high shear extrusion processing without compatibilizers

Cited by 11 publications

References 38 publications

Development and Optimization of Medical-Grade Multi-Functional Polyamide 12-Cuprous Oxide Nanocomposites with Superior Mechanical and Antibacterial Properties for Cost-Effective 3D Printing

Development and Optimization of Medical-Grade Multi-Functional Polyamide 12-Cuprous Oxide Nanocomposites with Superior Mechanical and Antibacterial Properties for Cost-Effective 3D Printing

Eco-friendly biodegradable polymers: Sustainable future

Mechanical Performance of Fused Filament Fabricated and 3D-Printed Polycarbonate Polymer and Polycarbonate/Cellulose Nanofiber Nanocomposites

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