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Synthesis of High-Performance Polymers via Copper-Catalyzed Amination of Dibromoarenes with Primary Aromatic Ether Diamines
关键字：poly(imino ether ketone)s, heat-resistant polymer, copper-catalysis, foam.
In this paper, we introduce three high-performance polymers with similar structures, poly(imino ether ketone) (PIEK)s, which are synthesized by the ligand free copper-catalyzed C-N cross coupling reaction of aryl halides and primary aromatic diamines at moderate temperature. The influence of the solvents, base, temperature, and catalyst ligands on the polycondensation reaction is investigated. T...
http://www.polymer.cn/research/sy_info19473 |
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[RSC Adv.] Direct functionalization of cellulose nanocrystals with polymer brushes via UV-induced polymerization: access to novel heterogeneous visible-light photocatalysts
关键字：polymer brushes, cellulose nanocrystals, UV-induced photopolymerizations
Cellulose nanocrystals (CNCs) are an exciting class of bio-based materials attracting increasing interest for
a wide range of potential applications due to their nanoscale dimensions, biocompatibility, biodegradability
and large surface area. In this work, we report a universal and facile strategy for the preparation of polymer
brushes on CNCs via photopolymerization in the absence of any initiato...
http://www.polymer.cn/research/sy_info19424 |
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Equal Low-Order Finite Element Simulation of the Planar Contraction Flow for Branched Polymer Melts
关键字：Equal low-order finite element; Fractional step algorithm; Planar contraction; Rheological behavior; Viscoelastic flow; XPP mode
The rheological characteristics of branched polymer melts
is described by the modified XPP model, which is discretized by
inconsistent streamline-upwind method. A finite increment calculus
procedure is introduced to reformulate the mass equation and to
overcome oscillations of the pressure field. Moreover, the governing
equations are discretized and solved by the iterative fractional step
algorith...
http://www.polymer.cn/research/sy_info19401 |
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A Main-Chain de Vries Smectic Liquid Crystal Polymer Prepared by Hoveyda-Grubbs Catalyst-Initiated Acyclic Diene Metathesis Polymerization
关键字：ADMET; de Vries Smectic; fibers; liquid-crystalline polymers (LCP)
A main-chain liquid crystalline polymer has been obtained by applying a Hoveyda–Grubbs
2nd generation catalyst in acyclic diene metathesis polymerization (ADMET) of a monomer containing on one end a terminal dimethylvinylsilyl group and at the other end a terminal C-C double bond.
http://www.polymer.cn/research/sy_info19352 |
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Synthesis and characterization of novel fluorinated polyimides derived from bis[4-(4''- aminophenoxy)phenyl]-3,5-bis(trifluoromethyl)phenyl phosphine oxide
关键字：Phenylphosphine oxide, Fluorinated polyimide, Thermally stable polymer
A novel fluorinated aromatic diamine, bis[4-(40-aminophenoxy)phenyl]-3,5-bis(trifluoromethyl)-
phenyl phosphine oxide, was synthesized. A series of new fluorinated polyimides containing phosphine oxide was prepared from the novel diamine with various commercially available aromatic dianhydrides. All the fluorinated polyimides show high glass transition temperatures, excellent thermal stabilit...
http://www.polymer.cn/research/sy_info18195 |
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支化高分子溶液在剪切下的应力硬化
关键字：branch polymer, rheology, non-Gaussian stretching, strain hardening
We show for the first time that entangled polymeric liquids containing long-chain branching can exhibit strain hardening upon startup shear. As the significant long-chain branching impedes chain disentangle- ment, Gaussian coils between ent...
http://www.polymer.cn/research/sy_info17876 |
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34. Enhanced decolorization of azo dye solution by cadmium sulfide/multi-walled carbon nanotubes/polymer composite in combination with hydrogen peroxide under simulated solar light irradiation
关键字：Photocatalytic decolorization;Methylorange;CdS;Carbonnanotubes;H2O2
A Cadmium sulfide/ multi-walled carbon
nanotubes/polymer nanocomposite (CdS/MWCNTs/polymer) was fabricated via a facile
precipitation process by depositing
nanocrystalline CdS on carbon nanotubes/crosslinked chitosan nanocomposite
films and characterized by X-ray diffration (XRD). Under simulated solar light irradiation, a combination of CdS/MWCNTs/polymer and H2O2 (1.0 mM) was found to be...
http://www.polymer.cn/research/sy_info17786 |
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34. Enhanced decolorization of azo dye solution by cadmium sulfide/multi-walled carbon nanotubes/polymer composite in combination with hydrogen peroxide under simulated solar light irradiation
关键字：Photocatalytic decolorization;Methylorange;CdS;Carbonnanotubes;H2O2
A Cadmium sulfide/ multi-walled carbon
nanotubes/polymer nanocomposite (CdS/MWCNTs/polymer) was fabricated via a facile
precipitation process by depositing
nanocrystalline CdS on carbon nanotubes/crosslinked chitosan nanocomposite
films and characterized by X-ray diffration (XRD). Under simulated solar light irradiation, a combination of CdS/MWCNTs/polymer and H2O2 (1.0 mM) was found to be...
http://www.polymer.cn/research/sy_info17784 |
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35. Enhanced decolorization of azo dye solution by cadmium sulfide/multi-walled carbon nanotubes/polymer composite in combination with hydrogen peroxide under simulated solar light irradiation
关键字：Photocatalytic decolorization;Methylorange;CdS;Carbonnanotubes;H2O2
A Cadmium sulfide/ multi-walled carbon
nanotubes/polymer nanocomposite (CdS/MWCNTs/polymer) was fabricated via a facile
precipitation process by depositing
nanocrystalline CdS on carbon nanotubes/crosslinked chitosan nanocomposite
films and characterized by X-ray diffration (XRD). Under simulated solar light irradiation, a combination of CdS/MWCNTs/polymer and H2O2 (1.0 mM) was found to be...
http://www.polymer.cn/research/sy_info17782 |
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14.Effect of inorganic anions on the photocatalytic decolorisation of an azo dye in the aqueous phase by cadmium sulphide/polymer nanocomposite films under visible light irradiation
关键字：chitosan, decolorization, inorganic anions
Ru Jiang, Yujiang Guan, Huayue Zhu, Yongqian Fu, Effect of inorganic anions on the
photocatalytic decolorisation of an azo dye in the aqueous phase by cadmium sulphide/polymer
nanocomposite films under visible light irradiation. Color. Technol., 2011, 127, 426-433
http://www.polymer.cn/research/sy_info17761 |
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