P(St-BA-VBT)/dye colored nanoparticles were prepared by staining P(Styrene-Butyl Acrylate-Vinyl Benzyl Trimethylammonium chloride) nanoparticles synthesized by soap free cationic emulsion polymerization with reactive ...P(St-BA-VBT)/dye colored nanoparticles were prepared by staining P(Styrene-Butyl Acrylate-Vinyl Benzyl Trimethylammonium chloride) nanoparticles synthesized by soap free cationic emulsion polymerization with reactive dyes. The effects of reactive dyes dosage, dyeing temperature and time on amounts of dyes adsorbed on the nanoparticles were analysed. Results showed that when Reactive Red 195 dosage was5.25%, the adsorption amounts of dyes on the nanoparticles reached a maximum value of 18.64 mg/g at 65℃ for 90 min.展开更多
Batch cationic emulsion polymerization was carried out with styrene(St)and butyl acrylate(BA)as non-ionic monomer,Cetyl trimethyl ammonium chloride(CTAC)as emulsifier,and Azobis isobutyl amidine hydrochloride(AIBA)or ...Batch cationic emulsion polymerization was carried out with styrene(St)and butyl acrylate(BA)as non-ionic monomer,Cetyl trimethyl ammonium chloride(CTAC)as emulsifier,and Azobis isobutyl amidine hydrochloride(AIBA)or Azo diisopropyl imidazoline hydrochloride(AIBI)as initiator.The effects of amount and molecule structure of initiators on latex particle size,PDI and particle morphology were analyzed.Results showed that higher initiator amount resulted in smaller particle size and higher PDI.Besides,smaller particle size were obtained when AIBI was used as initiator.展开更多
The complexes formed by calcium ion and 12 common amino acids were investigated systematically in the gas phase at the level of MP2/6-311＋＋G（d,p）//MP2/6-3 1G（d,p）.The results show that the salt-bridge structure ...The complexes formed by calcium ion and 12 common amino acids were investigated systematically in the gas phase at the level of MP2/6-311＋＋G（d,p）//MP2/6-3 1G（d,p）.The results show that the salt-bridge structure is the most preferred motif for Ca2＋ binding aliphatic amino acids without heteroatom in the side chain,while charge-solvated（CS） structure is the most preferred motif for Ca2＋ binding other amino acids except for glutamine and lysine.IR spectra of Gln-Ca2＋ and Asn-Ca2＋ complexes were calculated and compared well with the available experiments.From the study in aqueous solution,the bidentate salt-bridge structure was determined to be the most favorable for all the twenty kinds of amino acids to chelate Ca2＋ to both the oxygen atoms of the negatively carboxylate group in the backbone.展开更多
基金National Natural Science Foundation of China(51173086)National Key Technology R&D Program(2014BACl3802),(2014BAE01801)Industriafization Projects of Major Independent Innovation Achievements of Shandong Province(2012ZHZXlA 0914)
文摘P(St-BA-VBT)/dye colored nanoparticles were prepared by staining P(Styrene-Butyl Acrylate-Vinyl Benzyl Trimethylammonium chloride) nanoparticles synthesized by soap free cationic emulsion polymerization with reactive dyes. The effects of reactive dyes dosage, dyeing temperature and time on amounts of dyes adsorbed on the nanoparticles were analysed. Results showed that when Reactive Red 195 dosage was5.25%, the adsorption amounts of dyes on the nanoparticles reached a maximum value of 18.64 mg/g at 65℃ for 90 min.
基金supported by National Natural Science Foundation of China,Grant No.51173086National Key Technology R&D Program,Grant No.2014BAC13B02 and 2014BAE01B01Industrialization Projects of Major Independent Innovation Achievements of Shandong Province,Grant No.2012ZHZX1A0914
文摘Batch cationic emulsion polymerization was carried out with styrene(St)and butyl acrylate(BA)as non-ionic monomer,Cetyl trimethyl ammonium chloride(CTAC)as emulsifier,and Azobis isobutyl amidine hydrochloride(AIBA)or Azo diisopropyl imidazoline hydrochloride(AIBI)as initiator.The effects of amount and molecule structure of initiators on latex particle size,PDI and particle morphology were analyzed.Results showed that higher initiator amount resulted in smaller particle size and higher PDI.Besides,smaller particle size were obtained when AIBI was used as initiator.
基金Supported by the National Natural Science Foundation of China（No. 21273122）.
文摘The complexes formed by calcium ion and 12 common amino acids were investigated systematically in the gas phase at the level of MP2/6-311＋＋G（d,p）//MP2/6-3 1G（d,p）.The results show that the salt-bridge structure is the most preferred motif for Ca2＋ binding aliphatic amino acids without heteroatom in the side chain,while charge-solvated（CS） structure is the most preferred motif for Ca2＋ binding other amino acids except for glutamine and lysine.IR spectra of Gln-Ca2＋ and Asn-Ca2＋ complexes were calculated and compared well with the available experiments.From the study in aqueous solution,the bidentate salt-bridge structure was determined to be the most favorable for all the twenty kinds of amino acids to chelate Ca2＋ to both the oxygen atoms of the negatively carboxylate group in the backbone.
