Abstract:
본 발명은 진단 시약용 셀룰로오스 아세테이트 착색 미립자 비드의 제조 방법 및 이로부터 제조되는 진단 시약용 셀룰로오스 아세테이트 착색 미립자 비드에 관한 것으로서, 다색 발색이 가능한 면역 크로마토그래피 키트 및 상기 키트의 요소로서 적합한 유기 착색 미립자를 제조하는 방법 및 상기 방법으로 제조되는 착색 미립자 비드를 제공한다. 본 발명에 따르면 아세틸기 치환도가 2.5 이하인 셀룰로오스 아세테이트를 출발 원료로 사용하고 아세톤과 디클로로메탄의 공용매를 이용하여 고분자를 용해시키며 고분자 용액에 착색제를 분산시켜 에멀젼-증발법을 통해 입자 직경이 약 10~1,000nm, 입도분포가 1.1~1.5인 균일한 착색 미립자를 제조할 수 있다. 또한, 본 발명에 따라 제조되는 셀룰로오스 아세테이트 착색 미립자는 내부에 잔류하는 수산기에 의해 우수한 수분산성을 나타내고 소수성 표면 특성으로 인한 단백질 흡착성을 유지시켜 면역 크로마토그래피 키트의 고분자 프로브(probe)로서 이용될 수 있을 것으로 기대된다.
Abstract:
The present invention relates to a polymer micelle-medicine complex based on a cellulose-graft-polylactide-based amphiphilic polymer and to a method for producing the same. More specifically, the polymer micelle-medicine complex includes an amphiphilic copolymer having a hydrophilic block including cellulose and a hydrophobic block including polylactide and is formed in a core-shell structure consisting of a hydrophobic core unit and a hydrophilic shell unit. Prednisolone acetate which is a refractory drug is encapsulated in the core unit of the core-shell structure so as to constitute the polymer micelle-medicine complex. The polymer micelle-medicine complex according to the present invention effectively solubilizes the refractory drug and changes the molecular variants of the amphiphilic copolymer so that a micelle having improved stability is produced. Accordingly, the encapsulation efficiency of the refractory drug is maximized and releasing behavior can be easily controlled.
Abstract:
The present invention relates to a method for preparing regenerated cellulose fibers with improved strength by hydrolyzing cellulose acetate fibers prepared by melt-spinning in a short time, and more specifically, to a method for preparing cellulose fibers by hydrolyzing cellulose acetate fibers by putting the tense cellulose acetate fibers in an alkaline solution containing metal salt, and washing and drying the cellulose acetate fibers. According to the present invention, the cellulose fibers are prepared by melt-spinning the cellulose acetate fibers and hydrolyzing the cellulose acetate fibers in a short time, thereby improving productivity. The cellulose fibers can be applied to a wide range of products which require high strength.
Abstract:
The present invention relates to a mask pack using temperature-responsive sol-gel transfer hydrogel and, more specifically, to a temperature-responsive mask pack manufactured by mixing a hydrophilic polymer or an amphipathic polymer including two or more phosphate groups and a multivalence cation corresponding to a negative charge of the phosphate group and aging, and including a sol-gel transfer hydrogel transferred from the sol state to the gel state at the temperature range of 10-50°C and skin active ingredients. The mask pack using temperature-responsive sol-gel transfer hydrogel according to the present invention uses the temperature-responsive hydrogel existing in the sol state at low temperatures and existing in the state transformation into the sol state at body temperatures, so that a large amount of skin active ingredients is rapidly spread on the skin at the beginning, and the hydrogel gelates by the skin temperature afterward to form a film. Therefore, the moisture retention maintains to minimize evaporation of the skin active ingredients, thereby improving absorption and usability of the skin active ingredients.