公开(公告)号：KR100724845B1

公开(公告)日：2007-06-04

申请号：KR1020060015331

申请日：2006-02-16

Applicant: 재단법인서울대학교산학협력재단

Inventor： 장정식 ,  하정석

IPC: C08F2/18 ,  C08J3/12 ,  C08G73/02 ,  B82B3/00

Abstract: Provided is a method for preparing a silica-polyaniline core-shell composite, which allows mass production of core-shell nanoparticles, enables production of core-shell composites having different thicknesses, and permits an ultrathin conductive coating on the surface of nanoparticles. The method for preparing a silica-polyaniline core-shell composite comprises the steps of: dispersing silica nanoparticles into an aqueous solution to perform surface modification of silica into an anionically charged surface; adding hydrochloric acid dropwise into an aqueous solution to provide HCl solution, and introducing aniline monomers thereto under agitation to form cationically charged anilinium ions; mixing the silica particles with the anilinium ions under agitation to allow the anilinium ions to be adsorbed on the silica surface through positive charge-negative charge electrostatic attraction; adding an oxidant dropwise to the mixed solution to perform polymerization of the anilinium ions adsorbed onto the silica surface under room temperature for several hours, and thus forming a polyaniline thin film on the silica surface; and separating and recovering the resultant core-shell nanoparticles through centrifugal separation.

Abstract translation: 本发明提供一种二氧化硅 - 聚苯胺核壳型复合体的制造方法，其能够大量生产核 - 壳型纳米粒子，能够制造厚度不同的核壳型复合体，并且能够在纳米粒子的表面形成超薄导电性覆膜。 制备二氧化硅 - 聚苯胺核 - 壳复合物的方法包括以下步骤：将二氧化硅纳米粒子分散到水溶液中以将二氧化硅表面改性成带阴离子电荷的表面; 将盐酸逐滴加入水溶液中以提供HCl溶液，并在搅拌下向其中引入苯胺单体以形成带阳离子电荷的苯胺离子; 在搅拌下将二氧化硅颗粒与苯胺离子混合以使苯胺离子通过正电荷 - 负电荷静电引力吸附在二氧化硅表面上; 向混合溶液中滴加氧化剂，使室温下吸附于二氧化硅表面的苯胺离子聚合数小时，在二氧化硅表面形成聚苯胺薄膜， 并通过离心分离分离并回收得到的核 - 壳纳米颗粒。

公开(公告)号：KR100793319B1

公开(公告)日：2008-01-11

申请号：KR1020060074434

申请日：2006-08-07

Applicant: 재단법인서울대학교산학협력재단

Inventor： 장정식 ,  하정석

IPC: C08J3/12 ,  C08G73/02 ,  C08F8/30 ,  B82Y30/00

Abstract: A method for preparing water-dispersible polyaniline nanoparticles is provided to produce polyaniline nanospheres which have good storage stability and dispersibility in an aqueous solution and form films having less surface roughness and high electroconductivity. A method for preparing water-dispersible polyaniline nanoparticles includes the steps of: dissolving styrenesulfonate, which is a water-soluble monomer having a negative charge, in an aqueous solution; adding an acid to distilled water to prepare an aqueous acid solution, thereto adding an aniline monomer, and stirring the admixture to form an anilinium ion having a positive charge; mixing the anilinium ion-containing aqueous solution with the aqueous styrenesulfonate solution, and stirring the mixture to produce a complex compound by positive-negative charge electrostatic attraction between the styrenesulfonate monomer and anilinium ion; and adding an initiator and an oxidant to the mixed solution, and preparing water-dispersible polyaniline nanoparticles while polymerizing the styrenesulfonate.

Abstract translation: 提供了一种制备水分散性聚苯胺纳米颗粒的方法，以生产具有良好的储存稳定性和在水溶液中的分散性的聚苯胺纳米球，并形成具有较小表面粗糙度和高导电性的薄膜。 制备水分散性聚苯胺纳米颗粒的方法包括以下步骤：将具有负电荷的水溶性单体的苯乙烯磺酸溶解在水溶液中; 向蒸馏水中加入酸以制备酸性水溶液，加入苯胺单体，并搅拌混合物以形成具有正电荷的苯胺鎓离子; 将含苯胺离子的水溶液与苯乙烯磺酸盐水溶液混合，并通过苯乙烯磺酸酯单体和苯胺鎓离子之间的正负电荷静电吸引搅拌该混合物以产生络合物; 并向混合溶液中加入引发剂和氧化剂，并在聚合苯乙烯磺酸盐的同时制备水分散性聚苯胺纳米粒子。