FIG. 1.

Representation of the radical polymerization of PNVCL (a). The percent transmittance (at a wavelength of 500 nm) as a variation of temperature of PNVCL suspensions (1% w/v) with different molecular weights (b). Images of the transition of a PNVCL-L suspension from transparent to opaque when below and above the LCST, respectively (c). LCST, lower critical solution temperature; PNVCL, poly(N-vinylcaprolactam); PNVCL-L, PNVCL lower. Color images available online at www.liebertpub.com/tea