High-Performance Carbon Nanotube/Polymer Composite Fiber from Layer-by-Layer Deposition

2016 ◽  
Vol 8 (12) ◽  
pp. 8137-8144 ◽  
Author(s):  
Min Le Wu ◽  
Yun Chen ◽  
Liang Zhang ◽  
Hang Zhan ◽  
Lei Qiang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Polymer Composite ◽  
High Performance ◽  
Composite Fiber ◽  
Layer By Layer ◽  
Layer Deposition

High performance carbon nanotube based composite film from layer-by-layer deposition

Carbon ◽  
2015 ◽  
Vol 90 ◽  
pp. 215-221 ◽  
Author(s):  
Liang Zhang ◽  
Wei Xu ◽  
Xiao Gang Luo ◽  
Jian Nong Wang
Keyword(s):  
Carbon Nanotube ◽  
Composite Film ◽  
High Performance ◽  
Layer By Layer ◽  
Layer Deposition

Gelation-Assisted Layer-by-Layer Deposition of High Performance Nanocomposites

2018 ◽  
Vol 232 (9-11) ◽  
pp. 1383-1398 ◽  
Author(s):  
Jian Zhu ◽  
Douglas Watts ◽  
Nicholas A. Kotov
Keyword(s):  
High Performance ◽  
Volume Fraction ◽  
High Volume ◽  
Nanometer Scale ◽  
Layer By Layer ◽  
Lbl Assembly ◽  
Layer Deposition ◽  
Fine Control ◽  
Nanofiber Alignment ◽  
Functional Components

Abstract Layer-by-layer (LBL) assembly produces nanocomposites with distinctively high volume fractions of nanomaterials and nanometer scale controlled uniformity. Although deposition of one nanometer scale layer at a time leads to high performance composites, this deposition mode is also associated with the slow multilayer build-up. Exponential LBL, spin coating, turbo-LBL and other methods tremendously accelerate the multilayer build-up but often yield lower, strength, toughness, conductivity, etc. Here, we introduce gelation assisted layer-by-layer (gaLBL) deposition taking advantage of a repeating cycle of hydrogel formation and subsequent polymer infiltration demonstrated using aramid nanofiber (ANF) and epoxy resin (EPX) as deposition partners. Utilization of ANF gels increases the thickness of each deposited layer from 1–10 nm to 30–300 nm while retaining fine control of thickness in each layer, high volume fraction, and uniformity. While increasing the speed of the deposition, the high density of interfaces associated with nanofiber gels helps retain high mechanical properties. The ANF/EPX multilayer composites revealed a rare combination of properties that was unavailable in traditional aramid-based and other composites, namely, high ultimate strength of 505±47 MPa, high toughness of 50.1±9.8 MJ/m3, and high transparency. Interestingly, the composite also displayed close-to-zero thermal expansion. The constellation of these materials properties is unique both for quasi-anisotropic composites and unidirectional materials with nanofiber alignment. gaLBL demonstrates the capability to resolve the fundamental challenge between high-performance and scalability. The gelation-assisted layered deposition can be extended to other functional components including nanoparticle gels.

High performance carbon nanotube/polymer composite fibers and water-driven actuators

2021 ◽  
Vol 206 ◽  
pp. 108676
Author(s):  
Yuping Sun ◽  
Keheng Hou ◽  
Ding Zhang ◽  
Shulong Chang ◽  
Li Ye ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Polymer Composite ◽  
High Performance ◽  
Composite Fibers

scholarly journals Modification of Nanofiber Support Layer for Thin Film Composite forward Osmosis Membranes via Layer-by-Layer Polyelectrolyte Deposition

Membranes ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 70 ◽  
Author(s):  
Ralph Gonzales ◽  
Myoung Park ◽  
Leonard Tijing ◽  
Dong Han ◽  
Sherub Phuntsho ◽  
...  
Keyword(s):  
Thin Film ◽  
High Performance ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Structural Parameter ◽  
Layer By Layer ◽  
Film Composite ◽  
Thin Film Composite ◽  
Layer Deposition ◽  
Tfc Membrane

Electrospun nanofiber-supported thin film composite membranes are among the most promising membranes for seawater desalination via forward osmosis. In this study, a high-performance electrospun polyvinylidenefluoride (PVDF) nanofiber-supported thin film composite (TFC) membrane was successfully fabricated after molecular layer-by-layer polyelectrolyte deposition. Negatively-charged electrospun polyacrylic acid (PAA) nanofibers were deposited on electrospun PVDF nanofibers to form a support layer consisted of PVDF and PAA nanofibers. This resulted to a more hydrophilic support compared to the plain PVDF nanofiber support. The PVDF-PAA nanofiber support then underwent a layer-by-layer deposition of polyethylenimine (PEI) and PAA to form a polyelectrolyte layer on the nanofiber surface prior to interfacial polymerization, which forms the selective polyamide layer of TFC membranes. The resultant PVDF-LbL TFC membrane exhibited enhanced hydrophilicity and porosity, without sacrificing mechanical strength. As a result, it showed high pure water permeability and low structural parameter values of 4.12 L m−2 h−1 bar−1 and 221 µm, respectively, significantly better compared to commercial FO membrane. Layer-by-layer deposition of polyelectrolyte is therefore a useful and practical modification method for fabrication of high performance nanofiber-supported TFC membrane.

Synthesis of carbon nanotube–nickel nanocomposites using atomic layer deposition for high-performance non-enzymatic glucose sensing

2015 ◽  
Vol 63 ◽  
pp. 325-330 ◽  
Author(s):  
Taejin Choi ◽  
Soo Hyeon Kim ◽  
Chang Wan Lee ◽  
Hangil Kim ◽  
Sang-Kyung Choi ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Atomic Layer Deposition ◽  
High Performance ◽  
Atomic Layer ◽  
Glucose Sensing ◽  
Layer Deposition
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