Abstract
AbstractMultiwalled carbon nanotubes (MWCNTs)/poly(N‐isopropylacrylamide‐co‐acrylic acid) composite microhydrogels are simply synthesized with controllable size distribution via a microfluidic reactor system. Monomers (N‐isopropylacrylamide and acrylic acid) are rapidly copolymerized (about 3 s) with the embedding of nanoscaled inorganic materials (MWCNTs and hectorites) in microfluidic channels. MWCNTs/hectorites act as “molecular heater” and inorganic crosslinkers in this hydrogel system. As a result, microminiaturization, multifunctionalizaion, and modification of traditional polymer hydrogels are realized simultaneously. Fourier transform infrared spectroscopy is used to confirm polymerization and environment‐sensitive tests are done as well. The resultant microgels exhibit dual near‐infrared and pH response with good reversibility, indicating their potential applications in microreactor fields. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
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