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Gas sensor with high molecular selectivity is highly demanded in many fields of industry or disaster relief. Molecularly imprinted polymer (MIP) can recognize target gas by specific adsorption for template molecule. In this study, a novel chemiresistor, gas sensor which combined with MIP and conductive nanoparticles has been developed. The gases were distinguished based on molecularly structure by...
The stable adsorption complex is synthesized by Zn(II) and a inclusion complex of β-cyclodextrin resin and 8-hydroxyquinoline with epichlorohydrin as crosslinking agent. The adsorption complex was used as an adsorbent to study its adsorption performance on trace Zn(II) in water by atomic absorption spectrophotometry. The experiment researched adsorption and elution conditions and enrichment factor,...
A new kind of foaming material for oil adsorption was prepared by melting blend and mold pressing, with Ethylene Propylene Diene Monomer (EPDM) as the matrix and waste dusty slag as the filler. The effects of foaming agent (AC) and waste dusty slag contents on the oil absorbency were studied. The results show that the oil absorbency reached the highest value with waste dusty slag loading 10% and AC...
A new kind of material for oil adsorption was prepared by melt blend with EPDM as the matrix and MgO as the filler. The effects of Dicumyl peroxide (DCP) and MgO contents on the oil absorbency were studied. Comparing the two samples with the highest oil adsorption rates, the experimental result indicates that the oil absorbency of EPDM (cross linked) is 51% more than that of EPDM the oil absorbency...
To find an effective method for uranium(VI) adsorption, uranium(VI) ion-imprinted chitosan composite magnetic microsphers (U(VI)-ICCMM) were synthesized using uranium(VI) as template, chitosan as functional monomer, epichlorohydrin and glutaraldehyde as crosslinking agents. Magnetic chitosan microsphers (MCM) were synthesized without U(VI) ion-imprinted as control. Experiments were conducted in a...
The avain feather is natural polymer material resources. It includes large quantity of keratin, among of which proteins take up 83%. The feathers modified by methyl methacrylate at Ammonium Persulfate(APS)-Sodium Bisulfite(SBS) as initiator are applied to treat chrome tanning waste water. The factors such as dosage, pH of chrome tanning waste water, adsorption time were discussed. The adsorption conditions...
Electrospun nylon-6 nanofibrous membrane with fiber diameters in the range of 50-200 nm were prepared and employed as affinity membrane material for papain adsorption due to their excellent chemical and thermal resistance as well as high wettability. In this work, covalent coupling of chitosan (CS) to activated nylon membrane was performed after the reaction of the nanofibrous nylon membrane with...
In this work, homogeneous dispersion of multiwall carbon nanotubes (MWCNTs) in the hydrophilic polymer poly (vinyl)alcohol (PVA) in the presence of organic surfactant sodium dodecyl sulfate (SDS) was achieved. Further, thermal analysis shows that carbon nanotubes increase the glass transition temperature Tg and nucleate PVA crystallization. The observed results from Raman spectra recorded with 785...
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