Abstract:
본 발명은 일광견뢰도가 향상된 플라스틱을 제조하는 방법에 관한 것으로서, 보다 상세하게는 (a) 수수( Sorghum
bicolor )의 잎, 줄기 및 이의 혼합물로 구성된 군으로부터 선택된 어느 하나의 추출물을 플라스틱 성형재료에 혼입하여 플라스틱 성형물을 제조하는 단계; 및 (b) 상기에서 제조된 플라스틱 성형물을 금속염이 포함된 용액으로 처리하는 단계를 포함한다. 본 발명은 수수 부산물로부터 항균 및 항산화 활성을 갖는 천연색소를 추출하여 플라스틱과 혼합하는 방법을 제공하고 있으며, 이에 의해 생산된 플라스틱을 이용하여 천연색소를 함유한 인체친화적이고 위생적인 제품을 개발할 수 있다. 특히, 본 발명은 수수에서 추출한 색소로 착색된 플라스틱 사출물 제조를 위한 최적 가공법을 제공함에 있어, 천연색소의 문제점인 일광에 대한 낮은 안정도를 높이기 위해 금속염과의 최적 가공조건을 확립함으로써 천연색소로 착색된 제품의 완성도를 높일 수 있다.
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 device for forming homogeneous monomer droplets and, more specifically, to a device for forming homogeneous monomer droplets, which forms droplets with uniform shapes for making polymer particles in a bead type such as polystyrene beads, thereby improving uniformity in shapes and sizes of polymer beads. According to the present invention, the device collects a monomer solution with low viscosity at one point using a distribution plate and separately transfers the collected monomer solution to each droplet hole formed at a multi-hole distribution plate when the monomer solution is transferred, thereby forming monomer droplets with improved uniformity.
Abstract:
PURPOSE: A core cross-linked polymer micelle composition is provided to improve biostability, to minimize side effect due to toxicity of chemicals, and to be used as a drug carrier. CONSTITUTION: A core cross-linked polymer micelle composition is represented by chemical formula 1. In the chemical formula 1, P is an aqueous polymer, X is a fat-soluble polymer, Y is a connection ring, and Z is polycysteine with 3-20 cysteine. The aqueous polymer P is one or more linear, block, graft, or dendrimer polymer selected form polyethylene glycol, polyvinylpyrrolidone, and poly[N-2-(hydroxypropyl)methacrylamide]. The molecular weight of the aqueous polymer P is 500-20,000 Dalton.
Abstract:
PURPOSE: A magnetic nanoparticles which are surface modified with phosphocholine, a formation method thereof, and a protein isolation method using thereof are provided to simplify isolating process in order to easily isolate using magnetic nano particles which is surface modified with the choline phosphate and a magnet. CONSTITUTION: A magnetic nanoparticles which are surface modified with phosphocholine comprises magnetic nano particles and materials having choline phosphate group. The choline phosphate is combined with magnetic nano particle surface and is exposed. A formation method of material having choline phosphate comprises a step of radical polymerizing monomers having choline phosphate groups which is represented by the following structural formula at surfaces of the magnetic nano particles. The structural formula 1 is Choline phosphate -X-R. A isolation method of C-reactive protein comprises next steps: adding magnetic nanoparticles which are surface modified with choline phosphate to sample solution containing the C-reactive protein; forming a complex of the C-reactive proteins and magnetic nano particles; isolating the composite from the sample solution by using the magnet; and isolating the C-reactive protein from the isolated composite by using a dissociating agent.
Abstract:
PURPOSE: A chip for detecting C-reactive proteins is provided to improve binding constant to the C-reactive proteins and detection effect. CONSTITUTION: A chip for detecting C-reactive proteins comprises: a metal substrate; and a molecularly imprinted layer which is formed on a metal substrate and contains phospho choline groups. The metal substrate contains gold, silver, copper, palladium, or combination thereof. The molecularly imprinted layer contains a monomolecular layer of HS-CnH2n+1-phospho choline or HC≡C-CH2-CmH2m+1-phospho choline. The chip also has a blocking layer on the metal substrate.