Journal ArticleDOI
Organic aerogels from the polycondensation of resorcinol with formaldehyde
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TLDR
In this paper, the polycondensation of resorcinol with formaldehyde under alkaline conditions results in the formation of surface functionalized polymer "clusters" which are processed under supercritical conditions to obtain low density, organic aerogels.Abstract:
The polycondensation of resorcinol with formaldehyde under alkaline conditions results in the formation of surface functionalized polymer “clusters”. The covalent crosslinking of these “clusters” produces gels which are processed under supercritical conditions to obtain low density, organic aerogels ( ⩽ 0.1 g cm−3). The aerogels are transparent, dark red in colour, and consist of interconnected colloidal-like particles with diameters of approximately 10 nm. The polymerization mechanism, structure and properties of the resorcinol-formaldehyde aerogels are similar to the sol-gel processing of silica.read more
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Carbon properties and their role in supercapacitors
TL;DR: Supercapacitors are able to store and deliver energy at relatively high rates (beyond those accessible with batteries) because the mechanism of energy storage is simple charge-separation (as in conventional capacitors) as discussed by the authors.
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Recent Progress in the Synthesis of Porous Carbon Materials
TL;DR: A review of the progress made in the last ten years concerning the synthesis of porous carbon materials is summarized in this paper, where several different routes have been used to synthesize mesoporous carbon materials.
Journal ArticleDOI
Chemistry of Aerogels and Their Applications
Alain Pierre,Gerard Pajonk +1 more
TL;DR: Aerogels form a new class of solids showing sophisticated potentialities for a range of applications, and can develop very attractive physical and chemical properties not achievable by other means of low temperature soft chemical synthesis.
Journal ArticleDOI
Mesoporous Carbon Materials: Synthesis and Modification
TL;DR: Methods for the preparation of mesoporous carbon materials with extremely high surface areas and ordered mesostructures, with potential applications as catalysts, separation media, and advanced electronic materials in many scientific disciplines are developed.
Journal ArticleDOI
Design and Preparation of Porous Polymers
TL;DR: This work presents a new mesoporous composite material suitable for high-performance liquid chromatography and shows good chiral recognition ability and high uniformity in various racemates.
References
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Book
Encyclopedia of polymer science and technology
TL;DR: In this article, the authors present a survey of the properties of polymers and their application in the field of chemical engineering, including the following: Coextrusion, Injection Molding, Flexible Packaging, Fibers, Polymer-Clay, and Plasticizers.
Journal ArticleDOI
Ultra-high-strength polyethylene filaments by solution spinning/drawing
Paul Smith,PJ Piet Lemstra +1 more
TL;DR: In this paper, the influence of the draw ratio on the mechanical and thermal properties of polyethylene fibres was investigated, and it was found that the tensile strength tended to approach an upper limit at high draw ratios.