Fabrication of Thermoresponsive Cross-Linked Poly(N-isopropylacrylamide) Nanocapsules and Silver Nanoparticle-Embedded Hybrid Capsules with Controlled Shell Thickness

Abstract

Hollow polymeric nanocapsules have attracted great interest in recent years due to their broad applications in controlledrelease carriers, catalysis, nanoreactors, and encapsulation of guest molecules. 1,2 Polymeric nanocapsules have been typically fabricated via the self-assembly of block copolymers, 3À5 polymerization within lipid vesicles, 6 emulsion polymerization, 7À14 and the sacrificial core-template approach. 15À32 The latter can provide extra advantages such as ease of fabrication and tunable sizes of the hollow void. The sacrificial core-template approach typically involves the covalent or noncovalent attachment of polymer shells onto the surface of inorganic or organic core templates, followed by the subsequent core etching step.Core templates can be coated with polymer shells via layer-bylayer (LBL) adsorption 15,16,18,23,26 or surface polymerization techniques. In the latter case, precipitation polymerization in

Preparation of thermal-responsive magnetic molecularly imprinted polymers for selective removal of antibiotics from aqueous solution

“…So the cross-linking monomer (EGDMA), which is hydrophobic, will make the LCST of TMMIPs higher than pure PNIPAm. Moreover, the trend of absorbance value depending on the temperature was similar to that of the silica/PNIPAm hybrid nanoparticles prepared by Liu et al [36], which were not absolutely water soluble. They could be suspended in water and when temperature increased the hydrodynamic radius of them decreased.…”

Design of Controllable-structured Polymeric Nanocapsules via SI-ATRP from Colloidal Templates

“…Wu et al fabricated the thermo-responsive crosslinked poly(Nisopropylacrylamide) (PNIPAM) nanocapsules and silver nanoparticle embedded hybrid PNIPAM nanocapsules with controlled shell thickness via the combination of SI-ATRP and "click" cross-linking [62]. SI-ATRP of N-isopropylacrylamide (NIPAM) and 3-azidopropylacrylamide (AzPAM) afforded hybrid silica nanoparticles immobilizing with P(NIPAM-co-AzPAM) brushes.…”

Fabrication of composite thin films with microstructures of honeycomb, foam, and nanosphere arrays through adsorption and self-assembly of block copolymers at the liquid/liquid interface

“…Various approaches have been proposed and developed to prepare polymer-based composites, which can be classified into blending [3,4], layer-by-layer assembling [5,6], emulsion polymerization [7,8] or hard template-directed polymerization/adsorption [9,10], electrospun/adsorption [11,12], and self-assembly methods [13,14]. The former two kinds of methods are most commonly used.…”