Abstract:
본발명에따른양친매성제미니고분자화합물은친수성부위와소수성부위를동시에가지고있으며미셀구조를이룰수 있다. 이러한미셀구조를통해소수성약물을봉입할수 있는약물전달체로사용될수 있으며, 특히본 발명에따른양친매성제미니고분자화합물을함유한약물전달체는디설파이드결합의티올반응성으로인해, 특정부위에서의약물전달및 방출특성을크게향상시킬수 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.