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Preparation of polymer/silica nanoscale hybrids through sol‐gel method involving emulsion polymers. II. Poly(ethyl acrylate)/SiO 2
Author(s) -
Tong Xin,
Tang Tao,
Feng Zhiliu,
Huang Baotong
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.11152
Subject(s) - materials science , polymer , casting , phase (matter) , chemical engineering , dispersion (optics) , morphology (biology) , acrylate , emulsion , transmission electron microscopy , nanoscopic scale , sol gel , polymer chemistry , ethyl acrylate , copolymer , composite material , chemistry , organic chemistry , nanotechnology , physics , optics , biology , engineering , genetics
Poly(ethyl acrylate) (PEA)/SiO 2 hybrids with different compositions were prepared under different casting temperatures and pH values. Their morphology as investigated by transmission electron microscopy (TEM) shows that samples with different compositions have different morphologies. When the SiO 2 content is lower, PEA is the continuous phase and SiO 2 is the dispersed phase. At higher SiO 2 content, the change in phase morphology takes place, nd PEA gradually dispersing in the form of latex particles in SiO 2 matrix. Change in phase morphology depends mainly on the time the sol‐gel transition occurs. At suitable casting temperature and pH value, PEA/SiO 2 in 95/5 and 50/50 hybrids with even dispersion was obtained. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 3532–3536, 2002