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.

Core/shell composite microparticles with silica nanoparticle as core and crosslinked poly(tert-butylmethacrylate) as shell were prepared by seed-emulsion polymerization utilizing 3-(trimethoxysilyl)propyl methacrylate(MPS) modified silica particles as seeds,tert-butylmethacrylate as monomer and sodium dodecyl sulfate(SDS) as emulsifier.

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

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.