The Propagation of the Conducting Zone of Layer‐by‐Layer PANI‐rGO Composite Films

2019 ◽  
Vol 4 (32) ◽  
pp. 9262-9267
Author(s):  
Xiangdong Zeng ◽  
Kun Zhou ◽  
Pufei Lu
Keyword(s):  
Composite Films ◽  
Layer By Layer ◽  
Conducting Zone

scholarly journals Actuation Behavior of Multilayer Graphene Nanosheets/Polydimethylsiloxane Composite Films

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1243 ◽  
Author(s):  
Chunmei Zhang ◽  
Tianliang Zhai ◽  
Chao Zhan ◽  
Qiuping Fu ◽  
Chao Ma
Keyword(s):  
Composite Film ◽  
High Performance ◽  
Graphene Nanosheets ◽  
Composite Films ◽  
Multilayer Graphene ◽  
Layer By Layer ◽  
Pdms Film ◽  
Out Of Plane ◽  
Dielectric Actuation ◽  
Electromechanical Actuation

The graphene nanosheets (GNS)/polydimethylsiloxane (PDMS) composite films with out-of-plane dielectric actuation behavior were prepared through a layer-by-layer spin coating process. The GNS-PDMS/PDMS composite films with 1~3 layers of GNS-PDMS films were spin coated on top of the PDMS film. The dielectric, mechanical, and electromechanical actuation properties of the composite films were investigated. The dielectric constant of the GNS-PDMS3/PDMS composite film at 1 kHz is 5.52, which is 1.7 times that of the GNS-PDMS1/PDMS composite film. The actuated displacement of the GNS-PDMS/PDMS composite films is greatly enhanced by increasing the number of GNS-PDMS layers. This study provides a novel alternative approach for fabricating high-performance actuators with out-of-plane actuation behavior.

Preparation of CPC-Fe3O4-MMT/PEG Magnetic Films via Layer-by-Layer Assembly under the Assistance of Magnetic Field

2016 ◽  
Vol 852 ◽  
pp. 1034-1038
Author(s):  
Li Nan Xu ◽  
Shu Chen Tu ◽  
Feng Zhu Lv ◽  
Qi An ◽  
Yi He Zhang
Keyword(s):  
Magnetic Field ◽  
Self Assembly ◽  
Present Method ◽  
Multilayer Film ◽  
Composite Films ◽  
Deposition Efficiency ◽  
Magnetic Films ◽  
Layer By Layer ◽  
Film Fabrication ◽  
Layer Assembly

Polyethylene glycol (PEG), which was not a traditional building block of layer by layer (LBL) self-assembly, was used to fabricate multilayer films by the combination of LBL and magnetic field induction. The UV-abs absorbance of the composite films increases linearly with the number of bilayers, indicating uniform fabrication of each layer. By this method, the multilayers can consist of up to 15 bilayers. The applied magnetic field not only enhances the compactness of the CPC-Fe3O4-MMT, but also improves the deposition efficiency of the films. The present method can be an effective method for multilayer film fabrication from non polyelectrolyte.

scholarly journals Layer by Layer Mesoporous Silica-Hyaluronic Acid-Cyclodextrin Bifunctional “Lamination”: Study of the Application of Fluorescent Probe and Host–Guest Interactions in the Drug Delivery Field

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1745 ◽  
Author(s):  
Kun Nie ◽  
Qi An ◽  
Jeffrey Zink ◽  
Xiang Yu ◽  
Yihe Zhang
Keyword(s):  
Hyaluronic Acid ◽  
Mesoporous Silica ◽  
Laser Scanning ◽  
Fluorescent Dyes ◽  
Mesoporous Silica Nanoparticles ◽  
Composite Films ◽  
Fluorescein Isothiocyanate ◽  
Layer By Layer ◽  
Layer Technique ◽  
Growth Profiles

The layer-by-layer technique was exploited to adjust the magnitude of the host–guest interactions between adamantane and cyclodextrin. The effect depends on numerous complex and changeable growth profiles of the films and the number of bilayers. These composite films of mesoporous silica nanoparticles and hyaluronic acid–cyclodextrin(HA-CD) were constructed to load the fluorescent dyes and peptides. The release rates of these molecules would decrease with an increase in the number of layers. A laser scanning confocal microscope was utilized to obtain the diffusion coefficient of fluorescein isothiocyanate. Hybrid films could be applied to increase the loading of different kinds of molecules and could also be integrated into the lamination to delay the rate of release.

Layer-by-Layer Assembly of Titania Nanosheet/Polycation Composite Films

2001 ◽  
Vol 13 (12) ◽  
pp. 4661-4667 ◽  
Author(s):  
Takayoshi Sasaki ◽  
Yasuo Ebina ◽  
Tomohiro Tanaka ◽  
Masaru Harada ◽  
Mamoru Watanabe ◽  
...  
Keyword(s):  
Composite Films ◽  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
Layer Assembly

scholarly journals Layer-by-Layer Assembly of Cationic Guar Gum, Cellulose Nanocrystals and Hydroxypropyl Methylcellulose based Multilayered Composite Films

2021 ◽  
Author(s):  
Arun Saini ◽  
Deepak Sharma ◽  
Yuanyuan Xia ◽  
Aman Saini ◽  
Xiangyu You ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Guar Gum ◽  
Hydroxypropyl Methylcellulose ◽  
Composite Films ◽  
Film Surface ◽  
Strength Properties ◽  
Layer By Layer ◽  
Multilayer Composite ◽  
Nonrenewable Resource ◽  
Multilayered Composite

Abstract Eco-friendly sustainable materials provide an appealing template to replace contemporary synthetic-nonrenewable resource-based materials while maintaining the acceptable material properties to meet the performance requirements. Here, a layer-by-layer (LBL) self-assembly technique was used for fabricating multilayer composite films using all bio-based polymers/polysaccharides, i.e. cationic guar gum (CGg), carboxylated cellulose nanocrystals (cCNCs) and hydroxypropyl methylcellulose (HPMC). A five layered composite film was fabricated by depositing polymeric layers as follows: CGg→cCNCs→HPMC→cCNCs→CGg. The structural analysis of CGg/cCNCs/HPMC multilayered composite films indicated the existence of electrostatic interaction as well as H-bonding between polymeric layers that resulted in homogenous, dense and compact film surface with improved smoothness and strength properties. As compared to pure CGg film, the CGg/cCNCs/HPMC multilayered composite films showed improved tensile strength (84.8% increment) and modulus (29.19% improvement). Importantly, the deposition of HPMC layer contributed in achieving multilayer composite films with more flexible behavior (46.55% improvement in elongation at break). Furthermore, owing to the high transparency (89.5% transmittance), appreciable gas and oil barrier performance and resistance to various solvents (e.g. acetone, THF and DMAc), these multilayer films are promising candidates for various applications including renewable/sustainable packaging materials.

Naturally inspired polyelectrolyte multilayer composite films synthesised through layer-by-layer assembly and chemically infiltrated with CaCO3

2015 ◽  
Vol 3 (24) ◽  
pp. 4821-4830 ◽  
Author(s):  
Iffat F. Patel ◽  
Maxim V. Kiryukhin ◽  
Nikolai L. Yakovlev ◽  
Himadri S. Gupta ◽  
Gleb B. Sukhorukov
Keyword(s):  
Composite Films ◽  
Multilayer Films ◽  
Considerable Change ◽  
Layer By Layer ◽  
Polyelectrolyte Multilayer ◽  
Natural Composite Materials ◽  
Inorganic Chemical ◽  
Natural Composite ◽  
Layer Assembly ◽  
Morphology And Mechanical Properties

Inorganic chemical infiltration in polyelectrolyte multilayer films results in a considerable change in morphology and mechanical properties mimicking natural composite materials.

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