PEGylated organosilica nanoparticles have been synthesized through selfcondensation of 3-mercaptopropyltrimethoxysilane in dimethylsulfoxide into thiolated nanoparticles with their subsequent reaction with methoxypolyethylene glycol maleimide. The PEGylated nanoparticles showed excellent colloidal stability over a wide range of pHs in contrast to the parent thiolated nanoparticles, which have a...

Interpolymer complexation is associated with the formation of hydrogen bonds between pendent and/or grafted groups of a single polymer or copolymers. The degree of complexation can be described theoretically in terms of complexation/decomplexation equilibrium characteristics. Graft copolymer networks of poly(methacrylic acid-g-ethylene glycol) were prepared by free radical solution polymerizati...

Herein we report the design of a photocurable amphiphilic co-network consisting of perfluoropolyether and poly(ethylene glycol) segments that display outstanding nonfouling characteristics with respect to spores of green fouling alga Ulva when cured under high humidity conditions. The analysis of contact angle hysteresis revealed that the poly(ethylene glycol) density at the surface was enhance...

Facile synthesis and detailed characterization of photopolymerizable and biocompatible poly(ethylene glycol) dimethacrylates (PEGDM) and poly(ethylene glycol) urethane-dimethacrylates (PEGUDM) are described. Poly(ethylene glycol)s of various molecular masses (M(n) = 1000 to 8000 g/mol) were reacted with methacrylic anhydride or with 2-isocyanatoethyl methacrylate to form PEGDMs and PEGUDMs, res...

Our laboratory is currently exploring synthetic oligo(poly(ethylene glycol)fumarate) (OPF)-based biomaterials as a means to deliver fibroblasts to promote regeneration of central/partial defects in tendons and ligaments. In order to further modulate the swelling and degradative characteristics of OPF-based hydrogels, OPF crosslinking via a radically initiated, mixed-mode reaction involving poly...

Davis and his co-workers (1944) experimented with phenyl cellosolve (monophenyl ether of ethylene glycol) using a mixture of phenyl cellosolve, ethanol and water in proportions of 1:2:2 with enough methyl salicylate to give it a slight pleasant odour. The material was used against head lice. The results, though not fully evaluated, were however thought to have been completely satisfactory. Hans...

Graft copolymers of poly (ethylene glycol) with poly (methacrylic acid) were prepared by reaction of poly (ethylene glycol) methacrylate macromonomer with methacrylic acid in the presence of tetraethylene glycol dimethacrylate as a crosslinking agent. The materials were swollen in aqueous solutions with the pH ranging from 1.5 to 12.0. Dynamic swelling studies were performed. The swelling rates...

Microfluidics (MFs) offers a promising method for the preparation of polymer microgels with exquisite control over their dimensions, shapes and morphologies. A challenging task in this process is the generation of droplets (precursors for microgels) from highly viscous polymer solutions. Spatial separation of MF emulsification and gelation of the precursor droplets on chip can address this chal...

Petroleum-derived monomers are the most common building blocks for ester-based thermosets. Bio-derived thermoset elastomers becoming viable alternatives to conventional Herein, we developed a biobased vitrimer-type using abundant and sustainable raspberry ketone as feedstock. We utilize create dynamic oxime chemistry crosslinked these through free radical polymerization with poly(ethylene glyco...