Abstract:
A method of making a silicone rubber having a structure adapted for growth of cells or living tissue, which comprises contacting a silicone rubber precursor with a biologically-acceptable sacrificial filler, curing the resultant mixture and removing the sacrificial filler to form a structured silicone rubber.
Abstract:
A porous, molecularly imprinted polymer and a process for its preparation are described. The porous, molecularly imprinted polymer is characterised in that it is obtainable by providing a porous silica; attaching a molecular template to the surface of the porous silica; filling the pores of the porous silica with a polymer; removing the silica and the molecular template, thereby leaving a porous, molecularly imprinted polymer. The process is characterised by the above defined process steps. Also described are a porous polymer vesicle and its preparation with the same features as defined for the porous, molecularly imprinted polymer and its preparation, except for the lack of the molecular template and thus the lack of the molecular imprint in the porous polymer.
Abstract:
A separator of a battery wherein an organic electrolyte is used, which is made of a microporous film having a matrix constituted of a polyethylene having such a molecular weight distribution that a portion having a molecular weight of 1,000,000 or above accounts for 10 wt.% or above and a portion having a molecular weight of 100,000 or less accounts for 5 wt.% or above and a polypropylene having a weight-average molecular weight of 10,000 to 1,000,000 in an amount of 5 to 45 wt.% of the total amount of polyethylene and polypropylene. The microporous film has a thickness of 10 to 500 νm, a porosity of 40 to 85 % and a maximum pore diameter of 0.05 to 5 νm. This battery separator can be readily produced by extrusion-molding a mixture of the polyethylene having the above-specified molecular weight distribution, the polypropylene having the above-specified weight-average molecular weight, an organic liquid and fine inorganic powder to form a film, and then extracting the organic liquid and the inorganic powder from the film. It has not only excellent stability but also excellent chemical resistance, mechanical strength and ion permeability, and is extremely useful as the separators of not only a lithium cell but also other primary and secondary cells wherein an organic electrolyte is used.
Abstract:
펠렛 또는 과립은 중합체 재료, 예를 들면 폴리에테르에테르케톤 및 임시 재료, 예를 들어 염화나트륨을 포함한다. 과립은 메디컬 임플란트에 사용되기 위한 형상을 생성하기 위해 사출 성형될 수 있고 부분적으로 다공성인 부품을 형성하거나, 또는 다공성 필름을 제조하는데 편리하게 사용될 수 있다.
Abstract:
A process for producing a porous film containing a liquid-crystalline polyester, characterized by comprising the following steps (a), (b), and (c) in this order. (a) 100 Parts by weight of a liquid-crystalline polyester is dissolved in a solvent, and 1-1,500 parts by weight of a filler is dispersed in the solution to prepare a slurry coating fluid. (b) The coating fluid is applied to at least one side of a substrate to form a coating film. (c) The coating film is subjected to solvent removal, immersion in a solvent in which the liquid-crystalline polyester does not dissolve, and drying to thereby obtain a porous film containing the liquid-crystalline polyester.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a three-dimensional product having a nanoporous surface in which the pore density, pore size or pore size distribution can be easily and readily controlled. SOLUTION: The invention combines two techniques: a method for producing a three-dimensional product in which a yarn is knitted or woven to finish into an arbitrary three-dimensional shape, and a method for transforming a surface consisting of a material in which nanoparticles are dispersed in a matrix to a nanoporous surface by immersing the surface in a liquid which dissolves the nanoparticles but does not dissolve the matrix. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
En el presente documento se detalla un material nanoestructurado definido por una alúmina anodizada que presenta una nanoestructura que presenta unos poros transversales que atraviesan y conectan poros longitudinales crecidos sobre un substrato de aluminio. En este documento se describe también el procedimiento de obtención de dicho material nanoestructurado así como su posible uso como plantilla o molde para la obtención de nanoestructuras formadas por nanohilos, los cuales se generan en los huecos o poros de la nanoestructura anteriormente citada del nanomaterial de la invención. Asimismo este documento detalla el uso del material nanoestructurado de alúmina anodizada como moldepara producir nanoestructuras.