Results 21 to 30 of about 448,187 (305)

High Porosity Poly(ether ketone ketone): Influence of Solvents on Foam Properties

open access: yesMacromolecular Materials and Engineering, 2023
Poly(ether ketone ketone) (PEKK) is a semicrystalline high‐performance polymer with exceptional mechanical properties, high continuous operation temperature, and is insoluble in most common solvents.
Dmitrii Rusakov   +2 more
doaj   +1 more source

Flexible thin polymer waveguide Bragg grating sensor foils for strain sensing [PDF]

open access: yes, 2017
This paper demonstrates that epoxy-based single mode polymer waveguides with Bragg gratings can be realized in very thin (down to 50 micron) polymer foils which are suitable for strain sensing when integrated inside glass fiber reinforced polymer ...
Chiesura, Gabriele   +5 more
core   +1 more source

Infrared Optical Switch Using a Movable Liquid Droplet

open access: yesMicromachines, 2015
We report an infrared (IR) optical switch using a wedge-like cell. A glycerol droplet is placed in the cell and its surrounding is filled with silicone oil. The droplet has minimal surface area to volume (SA/V) ratio in the relaxing state.
Miao Xu   +3 more
doaj   +1 more source

Determining the PE fraction in recycled PP

open access: yesPolymer Testing, 2021
The presence of a polyethylene (PE) fraction in recycled polypropylene (PP) will influence the processing as well as mechanical and thermal properties of recycled polypropylene. The objective of this work has been to compare methods used to determine the
Åge G. Larsen   +2 more
doaj   +1 more source

The effect of different metallic counterface materials and different surface treatments on the wear and friction of polyamide 66 and its composite in rolling-sliding contact [PDF]

open access: yes, 2003
Original article can be found at: http://www.sciencedirect.com/science/journal/00431648 Copyright Elsevier B. V. DOI: 10.1016/S0043-1648(03)00054-1The effect of different metallic counterface materials and different surface treatments on the tribological
Chen, Y.K.   +4 more
core   +1 more source

Tunable Focus Liquid Lens with Radial-Patterned Electrode

open access: yesMicromachines, 2015
A dielectric liquid lens is prepared based on our previous work. By optimizing the device structure, the liquid lens presents a converging focus with good resolution and changes its focal length over a broad range with a low driving voltage. For a liquid
Miao Xu, Xiahui Wang, Hongwen Ren
doaj   +1 more source

Development and Performance Evaluation of Cellulose Acetate-Bentonite Mixed Matrix Membranes for CO2 Separation

open access: yesAdvances in Polymer Technology, 2020
Membrane science is a state-of-the-art environmentally green technology that ascertains superior advantages over traditional counterparts for CO2 capture and separation.
Asif Jamil   +6 more
doaj   +1 more source

Polyisoprene Captured Sulfur Nanocomposite Materials for High-Areal-Capacity Lithium Sulfur Battery [PDF]

open access: yes, 2019
A polyisoprene-sulfur (PIPS) copolymer and nano sulfur composite material (90 wt % sulfur) is synthesized through inverse vulcanization of PIP polymer with micrometer-sized sulfur particles for high-areal-capacity lithium sulfur batteries.
Fang, C   +7 more
core   +1 more source

Direct processing of structural thermoplastic composites using rapid isothermal stamp forming [PDF]

open access: yes, 2020
A novel rapid isothermal stamp forming process is proposed which enables the rapid manufacture of structural thermoplastic composite laminate parts directly from multilayer hybrid fabrics comprising stitched unidirectional carbon fibre-thermoplastic ...
Awang-Ngah, S.   +3 more
core   +1 more source

Synthesis of a new furan-bearing triazine dichloride compound

open access: yesVietnam Journal of Science, Technology and Engineering, 2022
Donor-acceptor compounds have been receiving increased attention lately, especially in opto-electronic applications. In this work, a novel compound named triazine-furan, comprised of a triazine acceptor moiety and a furan donor side group, was designed ...
Thi Thuy Dung Phung   +3 more
doaj   +1 more source

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