نتایج جستجو برای: polycondensation

تعداد نتایج: 937  

Journal: :The journal of physical chemistry. B 2005
Chao Gao Yi Zheng Jin Hao Kong Raymond L D Whitby Steve F A Acquah G Y Chen Huihong Qian Achim Hartschuh S R P Silva Simon Henley Peter Fearon Harold W Kroto David R M Walton

An in situ polycondensation approach was applied to functionalize multiwalled carbon nanotubes (MWNTs), resulting in various linear or hyperbranched polycondensed polymers [e.g., polyureas, polyurethanes, and poly(urea-urethane)-bonded carbon nanotubes]. The quantity of the grafted polymer can be easily controlled by the feed ratio of monomers. As a typical example, the polyurea-functionalized ...

2007
Rong Xing Stephen E. Rankin

n-octyl-β-D-glucopyranoside (C8G1) has the potential to serve as a functional, nonionic template for mesoporous oxides, but its use has been limited due to its propensity to form lamellar mesostructures. Here, 2D hexagonal-structured mesoporous silicas with variable pore sizes are synthesized with C8G1 by the “nanocasting” technique (polycondensation of tetramethoxysilane in concentrated acidic...

2004
In Woo Cheong Jin Sup Shin Jung Hyun Kim Seung Jun Lee

We have successfully synthesized relatively monodisperse and cross-linked melamine-formaldehyde (MF) microspheres by dispersed polycondensation and subsequent pH adjustment with serum replacement cleaning. The average particle sizes ( : weight-average and : number-average), the polydispersity index ( ), the number of particles Np, and the gel content of the M-F microspheres were observed by var...

Journal: :Environmental science 2023

Nitrogen-doped g-C 3 N 4 /CoS nanocomposites have been synthesized using a facile polycondensation-hydrothermal method and showed improved photocatalytic activity for the degradation of MB dye industrial real samples with good photostability.

Journal: :Bulletin of the Chemical Society of Japan 1962

Journal: :Biomacromolecules 2010
David Feder Richard A Gross

Polyester synthesis activity of immobilized Humicola insolens (HiC) was systematically studied with three-series of substrates varying in (i) omega-hydroxyalkanoic acid (omegaHA), (ii) alpha,omega-n-alkane diol, and (iii) alpha,omega-n-alkane diacid chain length. Covalent immobilization of HiC on Amberzyme oxirane (AO) resin (i.e., AO-HiC) was prepared. HiC-AO's activity for omegaHA substrates ...

Journal: :Journal of the Textile Machinery of Japan - Proceedings - 1972

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