Template synthesis of hydrogel composite hollow spheres against polymeric hollow latex
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Hierarchically structured hydrogel hollow spheres with functional hydrogels located at desired sites are expected to have new properties. We have developed a facile swelling polymerization route using a polymer hollow sphere as template to synthesize hierarchically structured hydrogel hollow spheres. It is significant to pre-swell the template shell with good solvents, such as chloroform containing oil-soluble initiators to control interaction, thus, polymerization locus of different water-soluble functional monomers. Some representative hydrogel composite hollow spheres such as poly(N-isopropylarylamide) and poly(acrylic acid) with different morphologies have been synthesized. Hydrogels with functional groups can favorably complex with desired materials; hierarchically structured inorganic or polymer composite hollow spheres are synthesized by a sol–gel process of the inorganic precursor by using different hydrogel composite hollow spheres as templates.
KeywordsTemplate synthesis Hydrogel Hollow spheres Composite Morphology control
We thank the financial support of NSF of China (50573083, 50325313, 20128004 and 90206025), Chinese Academy of Sciences, and the China Ministry of Science and Technology (2004-01-09, KJCX2-SW-H07 and 2003CB615600).
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