| |
[Materials Chemistry and Physics] Controlled growth of metal nanoparticles on amino-functionalized polystyrene microspheres and their application in surface-enhanced Raman spectroscopy
This paper describes the preparation of hybrid materials of metallic nanoparticles (NPs) coated amino-terminated polystyrene (PS-NH2) microspheres by seed-mediated growth technique, and their application in surface-enhanced Raman spectroscopy (SERS). In our approaches, monodisperse PS microspheres are firstly prepared using dispersion polymerization with a subsequent nitration and amination to ach...
http://www.polymer.cn//ss/chentaogroup/publicationsshow_5855.html |
| |
Role of zinc chloride and complexing agents in highly active double metal cyanide catalysts for ring-opening polymerization of propylene oxide
Several double metal cyanide (DMC) catalysts based on Zn3[Co(CN)6]2 were prepared by an impregnation method. Infrared spectroscopy (IR),wide-angle X-ray diffraction (WAXD), and elemental analysis were used to characterize these DMC catalysts. The WAXD patterns showed that pure Zn3[Co(CN)6]2 had very high crystallinity (98.8%) with a typical cubic lattice structure, while DMC catalysts prepared w...
http://www.polymer.cn//ss/xhzhang/publicationsshow_5720.html |
| |
Atom-Exchange Coordination Polymerization of Carbon Disulfide and Propylene Oxide by a Highly Effective Double-Metal Cyanide Complex
无
http://www.polymer.cn//ss/xhzhang/publicationsshow_5717.html |
| |
Ring-Opening Polymerization of Propylene Oxide Catalyzed by a Calcium-Chloride-Modified Zinc-Cobalt Double Metal-Cyanide Complex
Highly active CaCl2-modified Zn-Co(III) DMCs were prepared. XRD results showed that the modified catalyst Ca-DMC containing 0.14 wt.-% CaCl2 was amorphous. A higher polymer yield (>61 kg polymer/g catalyst) and a shorter induction period for ROP of PO were observed for Ca-DMC than for unmodified DMC catalysts. An initiator had an inhibitory effect on the initiation and polymerization rate of ...
http://www.polymer.cn//ss/xhzhang/publicationsshow_5706.html |
| |
Selective copolymerization of carbon dioxide with propylene oxide catalyzed by a nanolamellar double metal cyanide complex catalyst at low polymerization temperatures
Traditional cobalt-zinc double metal cyanide complex [Zn-Co(III)DMCC] catalysts could catalyze the copolymerization of carbon dioxide (CO2) with propylene oxide (PO) to afford poly (propylene carbonate) (PPC) with high productivity. But the molecular weight (MW) of PPC and the polycarbonate selectivity were not satisfied. In this work, by using a nanolamellar Zn-Co(III) DMCC catalyst, the CO2-PO c...
http://www.polymer.cn//ss/xhzhang/publicationsshow_5700.html |
| |
Highly Regioselective and Alternating Copolymerization of Racemic Styrene Oxide and Carbon Dioxide via Heterogeneous Double Metal Cyanide Complex Catalyst
无
http://www.polymer.cn//ss/xhzhang/publicationsshow_5563.html |
| |
Improving the flame retardancy and mechanical properties of high density polyethylene-g-maleic anhydride with an organic metal phosphonate
Zinc N,N’-Piperazinebis(methylenephosphonic acid) (PPMPA-Zn) was melt blended with high density polyethylene-g-maleic anhydride (HDPE-MA) to fabricate flame retardant HDPE-MA/PPMPA-Zn composites. The thermal stability and flame retardancy of the composites were investigated by thermogravimetric analysis (TGA) and cone calorimetry. Incorporation of PPMPA-Zn did not obviously increase the ther...
http://www.polymer.cn//ss/zpfang/publicationsshow_4864.html |
| |
102. Post-Functionalization of an Anderson-Type Polyoxomolybdate Using a Metal-Free Diels–Alder Click Reaction
Functionalization and post-functionalization of polyoxometalates (POMs) by organic groups or biological moieties can provide versatile platforms for creating novel functional hybrids with synergetic properties. Such materials can easily be envisioned as having many advanced applications in biology and materials science. Nowadays, the organic groups or biological moieties used for conjugation with ...
http://www.polymer.cn//ss/wangwei/publicationsshow_4628.html |
| |
Effects of Rare Earth Metal Triflates on Cationic Curing of Epoxy Resin/Polyamide Systems
In this article, a new class of cationic initiators, lanthanide triflates, has been studied in the cationic curing of epoxy resin, diglycidyl ether biphenyl A (DGEBA), and polyamide (PA) mixtures. The reaction mechanism of the cationic curing of DGEBA/PA mixtures has been studied. The kinetics of this process has been evaluated by the Differential Scanning Calorimetry (DSC). The effect of the time...
http://www.polymer.cn//ss/caizhiqi/publicationsshow_4162.html |
| |
Stretching-Controlled Micromolding Process with Etched Metal Surfaces as Templates Towards Mass-Producing Superhydrophobic Polymer Films
A novel technique is described that uses stretching-controlled thermal micromolding with etched metal surfaces as templates for the mass-production of superhydrophobic polymer films. First, the metal surface is etched and then used as a template to thermally replica-mold the polymer (e.g., polyethylene). The resulting film surfaces exhibited stable superhydrophobicity with water contact angles >...
http://www.polymer.cn//ss/fengjie/publicationsshow_4072.html |
| |