The synthesis and characterization of PNIPAM microgels<br /> with clay as cross-linker<br />
Journal Title: Science Paper Online - Year 2007, Vol 2, Issue 5
Abstract
Adopting inorganic clay (hectorite) as a physical cross-linker, a series of temperature-sensitive microgels based on poly(N-isopropyl-acrylamide)(PNIPAM) with a range of particle size from 150 nm to 360 nm are synthesized by surfactant-free emulsion polymerization method. The structure of the microgels is confirmed by FTIR and XRD. The temperature-sensitivity of the microgels is investigated by DLS. It is concluded that clay platelets could act as effective multifunctional cross-linking agents. With increasing clay dosage, the particle size tends to decrease, but increases at higher clay content.
Authors and Affiliations
Qingsong Zhang, Lan Li, Liusheng Zha
Keywords
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