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Systhesis And Performance Of A Ternary Lipophilic Polyelectrolyte Acrylate Resin

Posted on:2013-08-25Degree:MasterType:Thesis
Country:ChinaCandidate:P P MaoFull Text:PDF
GTID:2251330392470385Subject:Materials science
Abstract/Summary:PDF Full Text Request
A ternary lipophilic poly electrolyte acrylate resin was prepared by incorporating of weakly coordinatng anions into the ternary nonionic polyacrylate oil-absorption resin which was copolymerized by styrene (St), methacrylate (BMA) and stearyl methacrylate (SMA). The oil-absorption resin was determined by Fourier Transform Infrared Spectrometry (FTIR), the particle morphology of the resin was observed by Scanning Electron Microscopy (SEM) and the oil absorbency was measured.First of all, the suspension polymerization of St, BMA and SMA was carried out to prepare ternary nonionic polyacrylate oil-absorption resin. The influences of sorts and feed ratios of monomers, water-oil ratio, crosslink agents, initiators, dispersants, and temperature on the structure and oil-absorptive properties of ternary nonionic polyacrylate oil-absorption resin were discussed in detail. The optimum polymerization conditions were obtained as follows:the feed ratio of St to monomer was50wt%, the ratio of BMA to soft monomer was60wt%, the water phase to oil phase ratio was3:1, the concentration of DVB was1.0wt%, and BPO was1.5wt%. The composite dispersant contained HEC, gelatin and SDBS. ω(HEC)=0.07wt%, ω(Gelatin)=0.14wt%, ω(SDBS)=0.02wt%, and T=85℃. The maximum oil absorbency to dichloromethane was23.00g/g.Tetraalkylammonium cations and tetraphenylborate anions were incorporated into the ternary nonionic polyacrylate oil-absorption resin to prepare ternary lipophilic polyelectrolyte acrylate resin through the modifications of polystyrene buliding block by chloromethylation, quaternary ammoniation and couterion exchange reactions. The structure of ternary lipophilic polyelectrolyte acrylate resin was analyzed by FTIR, and the morphology was observed by SEM. Results indicated that incorporation of too many ionic groups would cause physical crosslinking by higher aggregation of the ionic groups and consequently collapse of the gels. When the content of the ionic groups in the polymer chains was8.27wt%, the maximum oil absorbency to dichlorometane was35.78g/g.
Keywords/Search Tags:High oil aborbent resins, Polyacrylate, Weaking coordinating anions, Oilabsorbency
PDF Full Text Request
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