摘要:
본 발명은 표면 개질 처리된 고흡수성 수지 및 그 제조방법에 관한 것으로서, 보다 자세하게는 고흡수성 수지에 다가 양이온을 포함하는 수용성 염 및 초소수성을 갖는 미세입자를 첨가하여 표면 개질 처리함으로써 다른 물성을 크게 저하시키지 않으면서 동시에 파쇄 저항성과 투과능 그리고 흡수 속도가 향상되는 효과를 갖는 내파쇄성 고흡수성 수지 및 그 제조방법에 관한 것이다.
摘要:
본 발명은, 차아염소산나트륨(NaOCl)의 농도가 2.0∼20.0%인 차아염소산나트륨(NaOCl) 수용액 2.0∼15.0중량%, 칼륨계 화합물 0.1∼15.0중량%, 산성을 나타내는 pH 조절제 0.1∼5.0중량% 및 용매 70.0∼97.5중량%를 포함하는 것을 특징으로 하는 PEDOT-PSS 전도성 필름용 화학적 특수 산화제 및 이를 이용한 PEDOT-PSS 전도성 필름의 전도성 패턴화 방법에 관한 것이다. 본 발명에 의하면, PEDOT-PSS 전도성 필름을 화학적 특수 산화제에 노출시켜 물리적인 부식이 아닌 화학적으로 전도성을 잃게 함으로써, 산화 전후의 색차 등 광학적 특성에 변화를 줄여주어 패턴의 형상이 잘 보이지 않게 할 수 있으며, 전도성 패턴을 형성하기 위한 산화시간이 1분 이내로 짧고, 산화안정성이 30일 정도로 우수하다.
摘要:
A method for oxidizing polymeric surfaces to render them hydrophilic and more amenable to wetting is disclosed. The method comprises reacting the surface of a hydrophobic polymer with a peracid, especially Caro's acid, under conditions effective to render the surface more hydrophilic. Although strong oxidants can easily carbonize or discolor the surface of organic polymers, polymers can be rendered more hydrophilic without these problems when process conditions are carefully controlled. Specifically, treatment of the polymer surface with a peracid such as Caro's acid requires judicious selection of oxidation temperature, acid concentration, and peroxide content to achieve reaction rates that provide the desired level of hydrophilicity without charring or otherwise damaging the polymer.
摘要:
The present disclosure relates to particles comprising carboxyalkyl starch that are permeated with an acidic gas and their uses as absorbent materials. It was discovered that superabsorbent materials could be obtained from carboxyalkyl starch particles permeated with the acidic gas and heated to a temperature of at least 100°C until they reach an AUL at 0.7 psi. of at least 14 g/g and a CRC of at least 18 g/g. Moreover, it was discovered that the pH of alkaline starch extrudates can be adjusted by permeating particles of the extrudate with the acidic gas even with treating the particles to temperatures less than 100°C. The carboxyalkyl starch particles obtained by the methods described herein are characterized as having intramolecular ester bonds, which are greater in number at the surface of the particle than in the core, and the particles have a greater concentration of cation of the acidic gas at the surface than a the core.
摘要:
Polymer surface modification method comprising the steps of first forming a surface of primary reactive end groups tethered to the polymer chain ends during fabrication of an article, and then modifying the reactive surface with bio-active molecules, hydrophilic and hydrophobic monomers, oligomers, or polymers to attain specific surface properties. Alternatively, a multifunctional coupling agent can be used to couple the primary reactive group to a second reactive group capable of reacting with a functional group associated with bio-active molecules, hydrophilic and hydrophobic monomers, oligomers, and polymers to attain specific surface properties. The invention involves bringing reactive endgroups to the surface with surface active spacer attached to the polymer chain end. The surface active spacer allows the migration and enrichment of reactive end groups to the surface during fabrication. The invention provides medical devices having a bio-interface with anti-thrombogenic properties, lubricity, selective adsorption, and antimicrobial properties.
摘要:
A pickling solution for the surface pre-treatment of plastic surfaces in preparation for metallization, the solution comprising a source of Mn(VII) ions; and an inorganic acid; wherein the pickling solution is substantially free of chromium (Vl) ions, alkali ions, and alkaline- earth ions. In particular, the present invention relates to a pickling solution and to a pickling process for pickling ABS plastic surfaces or ABS polymer blend surfaces prior to a subsequent metallization of these surfaces.
摘要:
Surface-treated carboxyalkylated polysaccharides comprising a biobased content of at least 82 % are described herein. The surface-treated carboxyalkylated polysaccharides comprise a CRC of at least 18 g/g, a FSC of at least 26 g/g, and an AUL at 0.7 psi of at least 14 g/g. Processes for the manufacture of surface-treated carboxyalkylated polysaccharides are also described herein.
摘要:
A painted polyacetal article comprises a polyacetal substrate comprising 90 - 99.5wt% polyacetal and 0.5 - 10wt% of semicrystalline or amorphous thermoplastic non-polyacetal resin of molecular weight 1,000 - 50,000; and a paint applied to the polyacetal substrate from a solvent-borne, water-borne or powder 1K paint system onto a surface of the polyacetal substrate pretreated to enhance exposure of said semicrystalline or amorphous thermoplastic non-polyacetal resin of the substrate to the applied paint. The paint is a thermoplastic or partly thermoplastic non-thermosetting paint. A layer of thermosetting paint or varnish can be applied over the thermoplastic paint. The painted polyacetal article has improved paint adhesion and good retained physico-mechanical properties.
摘要:
An enhanced K-type polarizer includes a molecularly oriented sheet of polyvinylalcohol/polyvinylene block copolymer material having polyvinylene blocks formed by molecular dehydration of a sheet of polyvinylalcohol wherein the molecularly oriented sheet comprises light-polarizing molecules of polyvinylalcohol/polyvinylene block copolymer material varying in length, n, of conjugated repeating vinylene unit of the polyvinylene block, wherein an absorption concentration of each of the polyvinylene blocks in the range of n=19 to 25 is not less than approximately 65% of the absorption concentration of any of the polyvinylene blocks in the range of n=14 or 15, wherein the absorption concentration is determined by absorption of wavelengths from about 200 nm to about 700 nm by the polyvinylene blocks, and wherein the molecularly oriented sheet exhibits a photopic dichroic ratio, RD, of at least approximately 75.
摘要翻译:增强型K型偏振片包括聚乙烯醇/聚亚乙烯基嵌段共聚物材料的分子取向片材,其具有由聚乙烯醇薄膜分子脱水形成的聚乙烯基嵌段,其中分子取向片材包含长度不同的聚乙烯醇/聚乙烯嵌段共聚物材料的光偏振分子 ,n为聚亚乙烯基嵌段的共轭重复亚乙烯基单元,其中每个聚亚乙烯基嵌段在n = 19至25的范围内的吸收浓度不小于任何聚亚乙烯基嵌段的吸收浓度的约65% n = 14或15的范围,其中吸收浓度由聚亚乙烯嵌段吸收从约200nm至约700nm的波长确定,并且其中分子取向片材显示至少近似的明视二色性比RD 75。