Patent ID: 11964874
Assignee: AGILENT TECHNOLOGIES, INC.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 11:
12. A particle comprising:
a non-porous core;
a hydrophilic polymer layer comprising an etched surface;
wherein the hydrophilic polymer layer includes at least one polymer chosen from poly(N-isopropylacrylamide) (PNIPAM), polyacrylamide (PAM), poly(acrylic acid), polymethacrylate, poly(ethylene glycol), poly(ethylene oxide), poly(-oxazoline) and polyethylenimine (PEI), poly(vinyl alcohol) (PVA), and poly(vinylpyrrolidone) (PVP);
wherein the particle has a pore volume of from about 0.001 to about 0.1 cm3/g, a surface area of from about 2 to about 100 m2/g, or a combination thereof;
wherein the particle includes a diameter of from about 0.3 μm to about 10 μm; and
wherein the etched surface is a roughened surface.