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Synthesis and Characterization of Copolymer core ‐Silver shell Composite Microspheres
Author(s) -
ChangHua Zhou,
JingFang Zhou,
ZhiShen Wu,
ZhiJun Zhang,
PingYu Zhang
Publication year - 2005
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200591071
Subject(s) - x ray photoelectron spectroscopy , composite number , thermogravimetric analysis , transmission electron microscopy , nucleation , chemistry , chemical engineering , microsphere , copolymer , shell (structure) , scanning electron microscope , characterization (materials science) , nanocrystal , polymer chemistry , nanotechnology , composite material , materials science , polymer , organic chemistry , engineering
Composite microspheres composed of monodispersed poly(St‐co‐MAA) latices with diameter about 260 nm as core and Ag nanocrystals as shell were prepared by an in situ reduction method. The shell thickness could be controlled in the range of 15‐45 nm by this coating process. The structure and the composition of the core‐shell microspheres were characterized by transmission electron microscopy (TEM), X‐ray diffractometry (XRD), X‐ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TG). The formation of the composite microspheres is explained by the nucleation of silver on the surface of the latices followed by growth of the silver shell.