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A Facile Synthesis of Cu NPs and Ag NPs Coated by PS with Core–Shell Structure by Precipitation Polymerization
Author(s) -
Xu Guoyuan,
Wei Xiaobing,
Zong Chuanhui,
Sun Yiang,
Li Aixiang,
Ma Xiaojie,
Ren Huihua
Publication year - 2017
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201700055
Subject(s) - chemistry , polymerization , azobisisobutyronitrile , precipitation polymerization , polymer chemistry , monomer , reducing agent , radical polymerization , nanoparticle , polystyrene , chemical engineering , acrylate , nuclear chemistry , polymer , organic chemistry , engineering
Copper nanoparticles (Cu NPs ) coated with polystyrene ( PS ) (Cu NPs @ PS ) were prepared by precipitation polymerization. First, Cu NPs were prepared by chemical reduction using cupric acetate as precursor, sodium polyacrylate ( PAANa ) as stabilizer, and hydrazine hydrate as reducing agent. Then Cu NPs were coated by precipitation polymerization using styrene as monomer, 3‐(trimethoxysilyl) propyl acrylate as co‐monomer, and 2, 2‐azobisisobutyronitrile ( AIBN ) as initiator. Ultraviolet–visible ( UV –vis) spectroscopy and transmission electron microscopy ( TEM ) results showed that stable composite particles could be synthesized by precipitation polymerization. The amount of PAANa had a significant effect on the size of Cu NPs . The addition of more PAANa resulted in smaller Cu NPs . The spherical Cu NPs became nanowires when increasing the stirring rate from 350 to 700 rpm during precipitation polymerization. Ag NPs @ PS with core–shell structure were also prepared by this method, which appears to be universal.