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高效液相色谱：用户指南 (High Performance Liquid Chromatography(HPLC): A Users Guide)
【简介】 HPLC is a popular method of analysis because it is easy to learn and use and is not limited by the volatility or stability of the sample compound. The history section illustrates the HPLC's evolution from the 1970&#...
http://www.polymer.cn/resource/11441resource.html |
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Dual Organocatalysts for Highly Active and Selective Synthesis of Linear Poly(gamma-butyrolactone)s with High Molecular Weights
关键字：Poly(γ-butyrolactone)s,Ring-opening polymerization
Ring-opening polymerization (ROP) of the bioderived and nonstrained γ-butyrolactone (γ-BL) is an emerging approach to produce recyclable polymers. It remains a big challenge to synthesize high molecular weight linear poly(γ-butyrolactone)s (PγBLs) in a highly active and selective manner. In this report, we developed dual organocatalysts for the ROP of γ-BL, using symmetrical (thio)ureas wit...
http://www.polymer.cn/research/sy_info19587 |
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Electrospun Pitch/Polyacrylonitrile composite carbon nanofibers as high performance anodes for lithium-ion batteries
关键字：Electrospinning ，Carbon materials ，Composite nanofibers ，Energy storage and conversion
A new kind of soft carbon and hard carbon composite nanofibers were fabricated from isotropic pitch and polyacrylonitrile via simple electrospinning followed by stabilization and carbonization. The obtained fibrous mat was directly used as anodes of lithium-ion batteries without binder added and current collector. The composite nanofibers electrodes display a large reversible capa...
http://www.polymer.cn/research/sy_info19574 |
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18 Striking influence of Fe2O3 on the "catalytic carbonization" of chlorinated poly(vinyl chloride) into carbon microspheres with high performance in the photo-degradation of Congo red
关键字：poly(vinyl chloride)
A one-pot approach was demonstrated to effectively synthesize carbon microspheres through “catalytic carbonization” of commercial chlorinated poly(vinyl chloride) (CPVC) microspheres by Fe2O3 at 700 °C. Without Fe2O3, a “sponge-like” carbon lump was obtained. However, after adding Fe2O3 (even 0.5 g per 100 g CPVC) into CPVC, carbon microspheres with octahedral Fe3O4 microcrystals uniformly em...
http://www.polymer.cn/research/sy_info19551 |
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13 Catalytic carbonization of chlorinated poly(vinyl chloride) microfibers into carbon microfibers with high performance in the photo-degradation of Congo red
关键字：poly(vinyl chloride)
A simple approach was reported to prepare carbon microfibers embedded with octahedral Fe3O4 crystals (Fe/CMFs) through catalytic carbonization of chlorinated poly(vinyl chloride) (CPVC) microfibers using Fe3O4 as catalyst at 700 °C. Without Fe3O4, irregular carbon was obtained. However, after adding a proper amount of Fe3O4, carbon microfibers with uniform size were prepared. The influence of Fe3...
http://www.polymer.cn/research/sy_info19549 |
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High performance poly(N-aryleneindole ether) containing pyridine units as a novel acid response fluorescent detector
关键字：poly(N-aryleneindole ether); pyridine; sensor; luminescence
A novel high-performance polyindole containing a pyridine ring (P1)was successfully prepared by the catalyst-free nucleophilic substitution polycondensation of 4-hydroxyindole with 2,6-difluoropyridine via a C?N and C?O coupling reaction process. This semirigid polyindole P1 exhibits good thermal stability, and it can be dissolved well in common organic solvents. Fluorescent spectral studies ind...
http://www.polymer.cn/research/sy_info19475 |
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Facile synthesis of soluble aromatic poly(amide amine)s via C–N coupling reaction: Characterization, thermal, and optical properties
关键字：aromatic poly(amide amine)s; high-performance
Aromatic poly(amide amine)s (APAAs), as novel highperformance polymers, have been obtained by the condensation polymerization of N,N’-bis(4-bromobenzoyl)-p-phenylenediamine with two different primary aromatic diamines via palladiumcatalyzed aryl amination reaction. The structures of the polymers are characterized by means of FTIR, 1H NMR spectroscopy, and elemental analysis, the results show a ...
http://www.polymer.cn/research/sy_info19467 |
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Polyaniline Stabilized Barium Titanate Nanoparticles Reinforced Epoxy Nanocomposites with High Dielectric Permittivity and Reduced Flammability
关键字：Polyaniline, Barium Titanate, Epoxy Nanocomposites
Epoxy polymer nanocomposites (PNCs) filled with both barium titanate (BaTiO3) (500 and 100 nm) and conductive polyaniline (PANI) stabilized BaTiO3 nanoparticles (NPs) have been successfully prepared. The effects of the BaTiO3 nanofiller loading level and the PANI coating on the mechanical properties, rheological behavior, thermal stability, flammability and dielectric properties w...
http://www.polymer.cn/research/sy_info19457 |
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A Polyaniline/Mn02/Graphite felt Nanocomposite Prepared By Interfacial Chemical Technique And Its High Electrochemical Performance For Supercapacitors
关键字：Conducting polymer, Manganese dioxide, Graphite felt, Supercapacitors
Polyaniline/Mn02/graphite felt (PMGF) composite,which can be used as a novel free-standing, flexible electrode for supercapacitors, was prepared through interfacial chemical technique, and the effects of react temperature on the morphology and the electrochemical properties of the composite were investigated.
http://www.polymer.cn/research/sy_info18972 |
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Progress on High Performance Polymers Bearing Phthalazinone Moieties and Their Applicaion Technologies
关键字：high performance polymer, poly(aryl ether)s, phthalazinone, thermoplastic composites
Rising oil price and pressure to reduce emission push aerospace Original Equipment Manufacturers (OEMs) to use more and more polymer matrix composites (PMC) to reduce weight.Secondly, OEMs also try their best to reduce cost. They keep their eyes on improving repair and maintenance of PMC. Thermoplastics possess excellent comprehensive performance. First of all,OEMs prefer their high toughness,...
http://www.polymer.cn/research/sy_info18203 |
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