Mechanical and electrical properties of three‐dimensional printed polylactic acid–graphene–ca rbon nanofiber composites

2021 ◽  
Author(s):  
Jose Santo ◽  
Pavan Kumar Penumakala ◽  
Ramesh Babu Adusumalli
Keyword(s):  
Electrical Properties ◽  
Polylactic Acid ◽  
Three Dimensional ◽  
Mechanical And Electrical Properties

scholarly journals Mechanical and Electrical Properties of Polylactic Acid with Aliphatic-Aromatic Polyester

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Katsuyoshi Shinyama
Keyword(s):  
Electrical Properties ◽  
Polylactic Acid ◽  
Breakdown Strength ◽  
Electric Breakdown ◽  
Electrical Wire ◽  
Temperature Range ◽  
Mechanical And Electrical Properties ◽  
Aromatic Polyester

Assuming an application where polylactic acid (PLA), a hard bioplastic, is used to sheath electrical wire, the author added 20 wt% of aliphatic-aromatic polyester or polybutyrate adipate terephthalate (PBAT), a soft resin, to PLA and then investigated the softened PLA’s mechanical and electrical properties. As a result of adding PBAT to PLA, Tg shifted to about 10°C lower than PLA. In addition, adding PBAT to PLA made the PLA softer and even more so at temperatures above 40°C. Furthermore, adding PBAT to PLA decreased the electric breakdown strength (EB) of the PLA by about 1 MV/cm over the temperature range of 0°C to 50°C, and EB was slightly higher than that of PVC over the temperature range of −10 to 60°C.

scholarly journals Simulated Mechanical and Electrical Properties of Three-Dimensional Protein Lattices

2020 ◽  
Vol 118 (3) ◽  
pp. 479a
Author(s):  
Rachel Baarda ◽  
Simon Kit Sang Chu ◽  
Tegan Marianchuk ◽  
Daniel L. Cox
Keyword(s):  
Electrical Properties ◽  
Three Dimensional ◽  
Mechanical And Electrical Properties

scholarly journals Mechanical and electrical properties of polylactic acid/carbon nanotube composites by rolling process

2018 ◽  
Vol 25 (5) ◽  
pp. 891-901 ◽  
Author(s):  
Lijun Wang ◽  
Jianhui Qiu ◽  
Eiichi Sakai
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
Polylactic Acid ◽  
Molecular Orientation ◽  
Rolling Direction ◽  
Rolling Process ◽  
Molecular Structures ◽  
Scanning Calorimetry ◽  
Mechanical And Electrical Properties

AbstractIn this work, the rolling process was employed to fabricate polylactic acid/multi-walled carbon nanotube (PLA/MWCNT) composites at room temperature. The effects of the rolling conditions on the mechanical and electrical properties of the fabricated composites were investigated. The evolution processes of the internal molecular structures, i.e. changes in molecular orientation and crystallinity, were examined by X-ray diffraction, differential scanning calorimetry, and density method. The results suggested that the molecular orientation improved; however, the crystallinity decreased when the rolling ratio increased. The analysis of the mechanical properties revealed that the rolled composites displayed anisotropy during the rolling process. In the rolling direction, after adding 1 wt.% MWCNTs, the tensile strength increased from 58.6 to 94.3 MPa with the rolling ratio, whereas the fracture strain sharply increased to 131.5% at the rolling ratio of 60%. In addition to the mechanical properties, electrical resistivity was also investigated; notably, this property was not significantly affected by the rolling process. Furthermore, the MWCNT dispersion and morphology were investigated by scanning electron microscopy. These findings offer a simple and effective method to fabricate conductive composites with excellent mechanical properties.

Development of a Self-Opening Neural Interface

2013 ◽  
Vol 7 (2) ◽  
Author(s):  
Annarita Cutrone ◽  
Sivia Bossi ◽  
Silvestro Micera
Keyword(s):  
Electrical Properties ◽  
Nervous Tissue ◽  
Three Dimensional ◽  
Mechanical Tests ◽  
Neural Interface ◽  
Dimensional Structure ◽  
Biocompatible Polymer ◽  
Three Dimensional Structure ◽  
Preliminary Results ◽  
Mechanical And Electrical Properties

This article illustrates the development and preliminary results of SELINE, a self-opening neural interface. The advantages of this innovative neural interface are: higher selectivity due to its three-dimensional structure and efficient anchorage system to the nervous tissue. The device is made of polyimide that is a lightweight, flexible and biocompatible polymer. The electrode has been microfabricated using lithographic techniques; electrical and mechanical tests have been performed to evaluate the integrity of the device. Successful results have been obtained in the development of the electrode with excellent mechanical and electrical properties.

scholarly journals Mechanical and Electrical Properties of DNA Hydrogel-Based Composites Containing Self-Assembled Three-Dimensional Nanocircuits

2021 ◽  
Vol 11 (5) ◽  
pp. 2245
Author(s):  
Ming Gao ◽  
Abhichart Krissanaprasit ◽  
Austin Miles ◽  
Lilian C. Hsiao ◽  
Thomas H. LaBean
Keyword(s):  
Carbon Nanotubes ◽  
Gold Nanoparticles ◽  
Electrical Properties ◽  
Self Assembly ◽  
Three Dimensional ◽  
Mechanical And Electrical Properties ◽  
Dna Tiles ◽  
Dna Hydrogel ◽  
Conductive Nanomaterials ◽  
Dna Hydrogels

Molecular self-assembly of DNA has been developed as an effective construction strategy for building complex materials. Among them, DNA hydrogels are known for their simple fabrication process and their tunable properties. In this study, we have engineered, built, and characterized a variety of pure DNA hydrogels using DNA tile-based crosslinkers and different sizes of linear DNA spacers, as well as DNA hydrogel/nanomaterial composites using DNA/nanomaterial conjugates with carbon nanotubes and gold nanoparticles as crosslinkers. We demonstrate the ability of this system to self-assemble into three-dimensional percolating networks when carbon nanotubes and gold nanoparticles are incorporated into the DNA hydrogel. These hydrogel composites showed interesting non-linear electrical properties. We also demonstrate the tuning of rheological properties of hydrogel-based composites using different types of crosslinkers and spacers. The viscoelasticity of DNA hydrogels is shown to dramatically increase by the use of a combination of interlocking DNA tiles and DNA/carbon nanotube crosslinkers. Finally, we present measurements and discuss electrically conductive nanomaterials for applications in nanoelectronics.

scholarly journals Novel three-dimensional renewable phytic acid based aerogel electronics

2021 ◽  
Vol 260 ◽  
pp. 01012
Author(s):  
Rui Yao
Keyword(s):  
Electrical Properties ◽  
Specific Capacitance ◽  
Phytic Acid ◽  
Three Dimensional ◽  
Vertical Direction ◽  
Honeycomb Structure ◽  
Molar Ratio ◽  
Mechanical And Electrical Properties ◽  
Specific Direction ◽  
Third Stage

Novel three-dimensional renewable phytic acid (AP) aerogel electronics were synthesized through in-site polymerization and oriented lyophilization method. Three stages of the aerogels were apparently observed via SEM and TEM tests: the honeycomb structure consituted the first stage; the network with micropores formed the second stage; the third stage was composed of nanopores structure inside the micropores. When the molar ratio of aniline and phytic acid reached certain degree, the AP aerogel will emerge high pore volume and excellent specific capacitance. What’s more, the mechanical properties of AP aerogel were about 5 times (9 times for electrical properties) higher in vertical direction than those in horizontal direction. To sum up, the three-dimensional AP aerogel owned great mechanical and electrical properties in specific direction, at the same time, it exhibited outstanding specific capacitance (448 F.g-1).

Study of mechanical and electrical properties of AlMgSi alloys

2010 ◽  
Vol 35 (1) ◽  
pp. 59-69 ◽  
Author(s):  
Fares Serradj ◽  
Rebal Guemini ◽  
Hichem Farh ◽  
Karim Djemmal
Keyword(s):  
Electrical Properties ◽  
Mechanical And Electrical Properties
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