KINETICS OF POLYMERIZATION OF METHYL METHACRYLATE INITIATED BY COPPER POLYPROPYLENE—BASED POLY（OXIME—IMIDODIACETATE）—SODIUM SULFITE SYSTEM

The aqueous polymerization of methyl methacrylate intiated by copper polypropylene-based poly(oxime-imidodiacetate)(P-Cu)-sodium sulfite system has been investigated.The overall rate of polymerization(Rp) was found to be Rp=5.8×10^12e^-84.1KJ/RT[MMA]^1.4[P-Cu]^0[Na2SO3]^0.50 A mechanism of “coordination-proton transfer”for the production of initiating species was proposed and discussed.     

Modification of Montmorillonite through Intercalative Polymerization

Montmorillonite(MMT) was modified through intercalative polymerization of phenol and formaldehyde catalyzed by oxalic acid.The modified montmorillonite was delaminated at large,as demonstrated by XRD and TEM studies,It can disperse easily in epoxy resion to from exfoliated nanocomposites.The nanoscale silicate platelets dispersed in water can be metallized by silver deposition.     

Isolation and Characterization of Antimicrobial Polypeptide from Loach

A novel antimicrobial polypeptide was isoated and characterized from loach,misgurnus anguillicaudatus.The polypeptide,named MAPP,is a single-chain polypeptide with Mw adout 9,800 Dalton and pI about 4.78:the N-tag of MAPP was CFGWN.MAPP showed good inhibition against various bacteria including Bacillus subtilis.Escherichia coli and Staphylococcus aureus.MAPP could be used as a lead compound in antibiotics drug discovery.