The mixed polymerization system of reverse atom transfer radical polymerization(RATRP)and reversible addition fragmentation chain transfer polymerization(RAFT)was investigated using CPDN as chain transfer agent,AIBN as initiator,CuCl2·2H2O as catalyzer and byp as ligand,resulting a series of dithioester-terminated and chloro-terminated PMMA homopolymer.

Compatibilizing Effect of Copolymers in Polymer Blends Ⅱ.Grafted and Random Copolymers;

The formation and development of phase morphology in immiscible polymer blends is illustrated, including the analysis of influenced factors on phase dimension.

Determination of Components Separately in the Mixed System of KIO_3-KI-KBrO_3-KBr;

Tests on the mixed bacteria in the mixed system containing multifactor substrate show that since there is no antagonism among strains C-14-1,C-14-2 and J-13-1,they can be mixed and applied together.

The surface properties in the mixed system of simply structured bolaform amphiphile sodium eicosanedioate (C 20Na 2) and cationic surfactant dodecyl triethylammonium bromide(C 12Et 3)were studied.

The results indicated that the addition of organic nitrogen source was not only advantageous to the growth of the mixed culture,but also propitious to PVA degradation.

The dynamic composition of species and quantity in a mixed culture,which was capable of completely degrading 1 g/L poly(vinyl alcohol)(PVA) 1799,was investigated usingTerminal Restriction Fragment Length Polymorphism(T-RFLP) technology during the degradation process.

The experimental results show that the solubilizing ability of mixture system is lower for polat substances than that of single surfactant aqueous solution," V type isotherm curves of solubilized amount of p.