Please use this identifier to cite or link to this item:
|Title:||pH-responsive hollow polymeric microspheres and concentric hollow silica microspheres from silica-polymer core-shell microspheres||Authors:||Li, G.
|Issue Date:||19-Aug-2008||Citation:||Li, G., Liu, G., Kang, E.T., Neoh, K.G., Yang, X. (2008-08-19). pH-responsive hollow polymeric microspheres and concentric hollow silica microspheres from silica-polymer core-shell microspheres. Langmuir 24 (16) : 9050-9055. ScholarBank@NUS Repository. https://doi.org/10.1021/la8010579||Abstract:||Nearly monodispersed silica - poly(methacrylic acid) (SiO2-PMAA) core - shell microspheres were synthesized by distillation-precipitation polymerization from 3-(trimethoxysilyl)propylmethacrylate-silica (SiO 2-MPS) particle templates. SiO2-PMAA-SiO2 trilayer hybrid microspheres were subsequently prepared by coating of an outer layer of SiO2 on the SiO2-PMAA core-shell microspheres in a sol-gel process. pH-Responsive PMAA hollow microspheres with flexible (deformable) shells were obtained after selective removal of the inorganic SiO2 core from the SiO2-PMAA core-shell microspheres by HF etching. The pH-responsive properties of the PMAA hollow microspheres were investigated by dynamic laser scattering (DLS). On the other hand, concentric and rigid hollow silica microspheres were prepared by selective removal of the PMAA interlayer from the SiO2-PMAA-SiO2 trilayer hybrid microspheres during calcination. The hybrid composite microspheres, pH-sensitive hollow microspheres, and concentric hollow silica microspheres were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and energy-dispersive X-ray (EDX) analysis. © 2008 American Chemical Society.||Source Title:||Langmuir||URI:||http://scholarbank.nus.edu.sg/handle/10635/89785||ISSN:||07437463||DOI:||10.1021/la8010579|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Aug 9, 2022
WEB OF SCIENCETM
checked on Aug 9, 2022
checked on Aug 4, 2022
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.