Abstract:
A nanoporous material is provided. The pores of the nanoporous material are formed between nanoparticles that have a polymeric surface layer. The nanoporous material is produced by (a) suspending the nanoparticles in a medium material, wherein the nanoparticles are phase separated from the medium material, (b) heating the suspension to a temperature above the melting point of the nanoparticle surface layer, and (c) cooling the suspension. Alternatively, the nanoporous material may be produced by dissolving nanoparticles having a polymeric surface layer in a solvent, and then adding a medium material that causes the nanoparticles to phase separate from the solution.
Abstract:
Temperature sensitive, water soluble polymers are disclosed, together with a method for control the LCST of the polymer. The polymers include hydrophillic components and hydrophobic components joined by linking groups such as ester or amide groups wherein the hydrophilic components includes m ethylene oxide groups, the hydrophobic components consist of aliphatic groups such as n ethylenes and/or n cycloaliphatic groups, and where 1≦m≦30 and 1≦n≦30. Substrates bearing the grafted temperature responsive polymers also are disclosed. Microfluidic devices which include the temperature responsive polymers also are disclosed.
Abstract:
Disclosed herein are rubber compositions suitable for use in tire treads comprising (a) at least one conjugated diene polymer or copolymer; (b) at least one filler; (c) a curative package; and (d) at least one of: (i) from 0.2 to 10 phr of at least one halogenated hydrocarbon wax, or (ii) from 0.2 to 10 phr of at least one silicone-containing wax comprising a functionalized polyalkylsiloxane, a functionalized polyalkylsilsesquioxane resin, or combinations thereof. In certain embodiments, the at least one halogenated hydrocarbon wax is a chlorinated hydrocarbon or a fluorinated hydrocarbon wax.
Abstract:
The invention provides a hollow nano-particle comprising a crosslinked shell and a void core; and a preparation method thereof. The hollow nano-particle may be used in rubber composition, tire product, and pharmaceutical delivery system etc.
Abstract:
A method for determining the styrene microblock content of a copolymer sample, the method comprising: (i) pyrolyzing the copolymer sample to form polymer fragments of the polymer sample; (ii) analyzing the fragments to determine the relative amounts of styrene monomer fragments, styrene dimer fragments, and styrene trimer fragments, where the relative amounts of the fragments include the amount of any given fragment relative to the total of the monomer fragments, dimer fragments, and trimer fragments; and (iii) using the relative amounts of the styrene monomer fragments, styrene dimer fragments, and styrene trimer fragments to predict the polystyrene microblock content from a mathematical model that is based upon the relative styrene monomer fragments, relative styrene dimer fragments, relative styrene trimer fragments, and microblock content of a copolymer having known microblock content.
Abstract:
Temperature sensitive, water soluble polymers are disclosed, together with a method for control the LCST of the polymer. The polymers include hydrophillic components and hydrophobic components joined by linking groups such as ester or amide groups wherein the hydrophilic components includes m ethylene oxide groups, the hydrophobic components consist of aliphatic groups such as n ethylenes and/or n cycloaliphatic groups, and where 1≦m≦30 and 1≦n≦30. Substrates bearing the grafted temperature responsive polymers also are disclosed. Microfluidic devices which include the temperature responsive polymers also are disclosed.
Abstract translation:公开了温度敏感的水溶性聚合物,以及用于控制聚合物的LCST的方法。 聚合物包括亲水组分和通过连接基团如酯或酰胺基团连接的疏水组分,其中亲水组分包括环氧乙烷基团,疏水组分由脂族基团如n个乙烯基和/或n个脂环族基团组成, = m <= 30,1 <= n <= 30。 还公开了承载接枝温度响应性聚合物的底物。 还公开了包括温度响应聚合物的微流体装置。