Poly (N -isopropylacrylamide) microgel-based assemblies
نویسندگان
چکیده
منابع مشابه
Poly (N-Isopropylacrylamide) Microgel-Based Etalons for Optical Sensing
Poly (N-isopropylacrylamide) (pNIPAm) is one of the most completely studied “smart” polymers due to its unique reversible thermoresponsivity.That is, when pNIPAm in water is heated > ~31°C, it transits from a random coil to a globule conformation; this transition is reversed when T < ~31°C. This conformational change is accompanied by water exchange process. When pNIPAm undergoes the coil to gl...
متن کاملPoly (N-isopropylacrylamide) Microgel-Based Optical Devices for Sensing and Biosensing
Responsive polymer-based materials have found numerous applications due to their ease of synthesis and the variety of stimuli that they can be made responsive to. In this review, we highlight the group's efforts utilizing thermoresponsive poly (N-isopropylacrylamide) (pNIPAm) microgel-based optical devices for various sensing and biosensing applications.
متن کاملControlling the response of color tunable poly(N-isopropylacrylamide) microgel-based etalons with hysteresis.
We present the hysteresis of the response of the poly(N-isopropylacrylamide)-co-acrylic acid microgel-based etalons to solution temperature and pH changes. We find that the optical hysteresis of the etalon can be controlled using various solution ionic strengths and/or counterions, as well as by varying the microgel's acrylic acid concentration.
متن کاملInternal Motions of both Poly(N-isopropylacrylamide) Linear Chains and Spherical Microgel Particles in Water
Poly(N-isopropylacrylamide) (PNIPAM) linear chains and spherical microgel particles in very dilute aqueous solutions were studied by dynamic laser light scattering (LLS) over a wide range of scattering angles (6-154°). For the linear chains, at x < 1, only one peak related to diffusion was observed in the line-width distribution G(Γ), while for x > 1, we detected a second peak related to intern...
متن کاملPreparation of monodisperse poly(N-isopropylacrylamide) microgel particles with homogenous cross-link density distribution.
Monodisperse microgel latex with homogeneous cross-link density distribution within the particles was prepared by feeding the monomer and cross-linker into the reaction mixture in a regulated way during the polymerization. To determine the appropriate monomer feeding parameters, the kinetics of the particle formation was investigated by HPLC. The swelling and optical characteristics of the prep...
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ژورنال
عنوان ژورنال: Journal of Polymer Science Part A: Polymer Chemistry
سال: 2013
ISSN: 0887-624X
DOI: 10.1002/pola.26702