Highly monodisperse poly(N-isopropylacrylamide), PNiPAM, microgels were prepared by the conventional radical polymerization of NiPAM in the presence of dimethylamino ethyl methacrylate (DMAEMA) monomers at various concentrations. The effect of DMAEMA on the polymerization of PNiPAM microgels was examined at constant initiator (V50) and cross-linker (MBA) concentrations. The presence of DMAEMA i...

A series of thermoresponsive double hydrophilic (AB)(n) multiblock and ABA triblock copolymers of N,N-dimethylacrylamide (DMA) and N-isopropylacrylamide (NIPAM) with varying sequence lengths were synthesized via successive reversible addition-fragmentation chain transfer (RAFT) polymerizations by employing polytrithiocarbonate as the chain transfer agent. Previously, we reported that multiblock...

We have used neutron reflectivity (NR) measurements in combination with dynamic light scattering (DLS), surface tension and ellipsometry, to study the adsorption behaviour at the air/water interface of N-isopropylacrylamide-based nanogels as a function of concentration. The data provide clear evidence that the nanogels are adsorbed at the interface in a strongly deformed shape and forming a mul...

Three-component lamellar phase has been investigated which consists of C12E5 , octane and water . This is a layered phase, the lyotropic equivalent of a thermotropic smectic-A phase. X-ray scattering techniques were used on powder and aligned samples, as well as the optical microscopy investigations to understand the structure and the interactions that govern this lyotropic system, and also the...

Open AccessCCS ChemistryRESEARCH ARTICLE1 Aug 2021Controlling the Chain Folding for Synthesis of Single-Chain Polymer Nanoparticles Using Thermoresponsive Polymers He Zhang, Liang Jichun You, Niboqia Linxiuzi Yu, Huanyu Zhao, Hu-Jun Qian* and Zhong-Yuan Lu Zhang State Key Laboratory Supramolecular Structure Materials, Institute Theoretical Chemistry, Jilin University, Changchun 130012 Google Sc...

UNLABELLED To verify the interaction mechanism between sericin and Escherichia coli, especially the morphological and structural changes in the bacterial cells, the antimicrobial activity of sericin against E. coli as a model for Gram-negative bacteria was investigated. The antibacterial activity of sericin on E. coli and the interaction mechanism were investigated in this study by analyzing th...

Poly(N-isopropylacrylarnide-CO-methacrylic acid) P(NIPArn/MAA) nanoparticles were investigated as potentiai targetable systems for intravenous drug delivery. The responsive properties of P(NIPAm/MAA) nanoparticles have been characterized using dynamic light scattering (DLS) and responsive adhesion techniques. The hydrodynamic diameter of the nanoparticles decreased with increasing temperature o...

Adv. Mater. 2009, 21, 1949–1953 2009 WILEY-VCH Verlag G IO N Janus particles are non-centrosymmetric particles with two distinct sides. The two sides may differ in surface wettability or in optical, electrical, or magnetic properties. Depending upon the anisotropic properties, these particles can be used as emulsion stabilizers, analogous to surfactant molecules, optical probes for chemical, bi...