The present invention provides a surface-active two-tailed hydrophobic associated polymer and a preparation method thereof. The surface-active two-tailed hydrophobic associated polymer is prepared using a micellar free radical copolymerization method including: adding a surfactant sodium lauryl sulfate and a hydrophobic monomer N-phenethyl-N-alkyl (methyl) acrylamide or N-benzyl-N-alkyl (methyl) acrylamide into an aqueous solution containing acrylamide, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid, and surface-active macromonomer polyoxyethylene lauryl ether (methyl) acrylate, wherein the surfactant is used to solubilize the hydrophobic monomer in the formed micelle; adjusting pH to 6-8 with sodium hydroxide, and copolymerizing the hydrophobic monomer and a water-soluble monomer by means of photoinitiation. The properties, such as viscosifying property, temperature resistance, salt resistance and hydrolysis resistance, of the hydrophobic associated polymer can be effectively improved. The preparation method is reliable in principle and simple in operation and has a wide market prospect.

A non-silicon defoaming agent, includes an acrylate polymer, an organic solvent carrier, hydrophobic particles and defoaming auxiliaries; and the acrylate polymer is prepared from following raw material components: monomer-1, monomer-2, unsaturated terminated polyether, alkene, diluent and initiator. The present invention further includes a preparing method for the non-silicon defoaming agent and the application of the non-silicon defoaming agent to the defoaming and foam inhibiting in systems rich in anionic surfactants. The defoaming agent takes the acrylate polymer as the main active substance and has excellent defoaming and foam inhibiting performance. By dropwise adding monomers, the defoaming performance of the acrylate polymer is improved, by using unsaturated terminated polyether to modify, the hydrophilia of the acrylate polymer is improved, the instant defoaming capacity is further improved, and by the alkene with the carbon atoms of 6-22 to modify, the foam inhibiting performance of the defoaming agent is improved.

Disclosed are photoinitiators that are ultra violet (UV) reactive. The photoinitiators can be polymerized into polymeric backbones for use in UV curable hot melt pressure sensitive adhesives. The preferred polymeric backbones are acrylic-based polymers. The photoinitiators are very UVC sensitive and have excellent hot melt viscosity stability that is many fold higher than existing photoinitiators. The subject photoinitiators feature aryl ketones linked through an ether linkage to a variety of connector sequences that allow for polymerization of the photoinitiators.

Disclosed here is a method for making a three-dimensional micro-architected aerogel, comprising: (a) curing a reaction mixture comprising a co-sol-gel material (e.g., graphene oxide (GO)) and at least one catalyst to obtain a crosslinked co-sol-gel (e.g., GO hydrogel); (b) providing a photoresin comprising a solvent, a photoinitiator, a crosslinkable polymer precursor, and a dispersion of the crosslinked co-sol-gel (e.g., GO hydrogel); (c) curing the photoresin using projection microstereolithography layer-by-layer to produce a wet gel having a pre-designed three-dimensional structure; (d) drying the wet gel to produce a dry gel; and (e) pyrolyzing the dry gel to produce a three-dimensional micro-architected aerogel (e.g., graphene aerogel). Also disclosed is a photoresin for projection microstereolithography, comprising a solvent, a photoinitiator, a crosslinkable polymer precursor, and a dispersion of a crosslinked co-sol-gel.

Disclosed are a green synthesis method of an antibacterial super-porous hydrogel, a product of the antibacterial super-porous hydrogel and an application of the antibacterial super-porous hydrogel to degradation of various pollutants in wastewater treatment. The super-porous hydrogel based on poly (ionic liquid) is prepared by copolymerization of an imidazole type ionic liquid with double bonds and polyethylene glycol diacrylate (PEGDA) as a cross-linker. In the reaction system, water is a good solvent for the monomer ionic liquid and PEGDA, but a poor solvent for the poly (ionic liquid); when an initial concentration of the ionic liquid is higher than 25%, the phase separation typically proceeds through poly(ionic liquid) formation, interconnected networks with macroporous structure could be obtained by photo-crosslinking.

An anionic hydrogel based on poly(acrylic acid)-co-poly(oligoethylene glycol monoacrylate) (PAA-co-POEGA) for protein delivery and method of making the same.

A security device includes an arrangement of image icon focusing elements, wherein each image icon focusing element of the arrangement of image icon focusing elements is associated with a focal path. The device further includes an image icon layer with one or more image icons associated with a first characteristic color and one or more image icons associated with a second characteristic color and one or more regions between the image icons comprising a volume of substantially colorless material. At a first viewing angle, a color is visible through each image icon focusing element, and the color visible through each image icon focusing element at the first viewing angle is based on one or more of the first characteristic color, the second characteristic color, or the substantially colorless material.

Described herein are methods of stereolithographically printing intraocular devices, in particular intraocular lenses, as well as stereolithographic compositions for use therein. The stereolithography composition may comprise: a photoinitiator; a monofunctional aryl acrylate monomer, wherein the acrylate group of the monofunctional aryl acrylate monomer is of the formula -0-(C?0)-CH?CH.sub.2; and a multifunctional methacrylate or acrylate cross-linker, wherein the monofunctional aryl acrylate monomer is present in the composition in a greater amount than the multifunctional methacrylate or acrylate cross-linker.

Disclosed herein is a resin film. The resin film has a height difference of about 10 nm to about 65 nm between a convex portion and a concave portion on an outermost surface thereof, and has a difference in contact angle (CA) of less than about 10 , as represented by Equation 1:
CA=|CA2-CA1|[Equation 1] where in Equation 1, CA1 is a water droplet contact angle after a surface of a substrate coated with the resin film has been subjected to a 500-cycle reciprocating abrasion test using an eraser under a load of 500 g/cm.sup.2, and CA2 is a water droplet contact angle before the reciprocating abrasion test. Embodiments of the invention provide a novel and improved resin film capable of improving antifouling and slip properties and enhancing film strength, and a method of manufacturing the same.

Disclosed herein is a resin film. The resin film has a height difference of about 10 nm to about 65 nm between a convex portion and a concave portion on an outermost surface thereof, and has a difference in contact angle (CA) of less than about 10 , as represented by Equation 1:
CA=|CA2-CA1|[Equation 1] where in Equation 1, CA1 is a water droplet contact angle after a surface of a substrate coated with the resin film has been subjected to a 500-cycle reciprocating abrasion test using an eraser under a load of 500 g/cm.sup.2, and CA2 is a water droplet contact angle before the reciprocating abrasion test. Embodiments of the invention provide a novel and improved resin film capable of improving antifouling and slip properties and enhancing film strength, and a method of manufacturing the same.