Dispersion polymerization of tert-butyl acrylate(tBA)proceeded with ethanol-water solution as dispersion medium,polyvinylpyrrolidone(PVP)as stabilizer and azobisisobutyronitrile(AIBN)as initiator.

A series of temperature-sensitive microgels were synthesized using N-isopropylacrylamide(NIPAM) as main monomer,tert-butyl acrylate(tBA) as comonomer,and N,N′-methylene-bis(acrylamide)(MBA) as cross-linking agent by modified surfactant-free emulsion polymerization method.

In the present dissertation, controlled grafting polymerization of styrene, methyl methacrylate (MMA), tert-butyl acrylate (tBA) by atom transfer radical polymerization from cross-linked poly(methyl methacrylate) microgel were carried out.

The aim to synthesize the composite particles based on silica as core and poly(tert-butyl acrylate) as shell in this work, is to prepare the inorganic/organic core/shell composite particles whose shells are composed of poly(acrylic acid) by transforming poly(tert-butyl acrylate) into poly(acrylic acid) by hydrolysis.

PJ was treated with di-tert-butyl dicarbonate in the presence of K2CO3 to give N-Boc-1H-pyrazole-1-carboxamidine(PB),then PB reacted with di-tert-butyl dicarbonate in the presence of 4-dimethylaminopyridine to give N,N,N′-tri-Boc-1H-pyrazole-1-carboxamidine(PT),PT reacted with Mg(ClO4)·6H2O to give N,N -di-Boc-1H-pyrazole-1-carboxamidine(PM).