• 한국막학회:학술대회논문집
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• 한국막학회 1998년도 춘계 총회 및 학술발표회
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• pp.99-101
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• 1998

1. Introduction : The conventional grafting polymerization technique requires chemically reactive groups on the surface as well as on the polymer chains. For this reason, a series of prefunctionalization steps are necessary for covalent grafting. The surface prefunctionalizational technique for grafting can be used to ionization radiation, UV, plasma, ion beam or chemical initiators. Of these techniques, radiation method is one of the useful methods because of uniform and rapid creation of active radical sites without catalytic contamination in grafted samples. If the diffusion of monomer into polymer is large enough to come to the inside of polymer substrate, a homogeneous and uniform grafting reaction can be carried out throughout the whole polymer substrate. Radiation-induced grafting method may attach specific functional moieties to a polymeric substrate, such as preirradiation and simultaneous irradiation. The former is irradiated at backbone polymer in vacuum or nitrogen gas and air, and then subsequent monomer grafting by trapped or peroxy radicals, while the latter is irradiated at backbone polymer in the presence of the monomer. Therefore, radiation-induced polymerization can be used to modification of the chemical and physical properties of the polymeric materials and has attracted considerable interest because it imparts desirable properties such as blood compatibility. membrane quality, ion excahnge, dyeability, protein adsorption, and immobilization of bioactive materials. Synthesizing biocompatible materials by radiation method such as preirradiation or simultaneous irradiation has often used $\gamma$-rays to graft hydrophilic monomers onto hydrophobic polymer substrates. In this work, in attempt to produce surfaces that show low levels of anti-fouling of bovine serum albumin(BSA) solutions, hydroxyethyl methacrylate(HEMA) was grafted polypropylene membrane surfaces by preirradiation technique. The anti-fouling effect of the polypropylene membrane after grafting was examined by permeation BSA solution.

• 공업화학
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• 제10권3호
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• pp.477-485
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• 1999

방사선 전조사법에 의하여 폴리프로필렌 부직포 상에 2,3-에폭시프로필메타크릴레이트 (GMA)를 공중합시킨 후 다양한 혼합용매 상에서 이미노디아세트산 (IDA)과 반응시킴으로서 고성능의 섬유상 금속 흡착제를 제조하였다. 그라프트 반응시의 그라프트율은 반응시간과 반응온도, 총 조사선량 및 선량율에 의존하는 것으로 나타났다. GMA가 그라프트된 폴리프로필렌 부직포 상에 이미노디아세트산을 도입하는 아민화반응에 있어서 다양한 혼합용매가 반응성에 미치는 영향을 고찰한 결과 디메틸술폭시드 (DMSO)와 물을 적정비율로 혼합한 혼합용매 상에서 가장 높은 반응성을 가지는 것으로 나타났으며, 물만을 사용하는 경우 아민화반응은 전혀 진행되지 않았다. 이온농도 100 ppm으로 조재된 중금속 용액에 제조된 아민화 흡착제를 일정시간 담그어 금속이온에 대한 흡착성능을 살펴보았는데, 각각의 경우에 대하여 흡착효율을 다음의 순서를 따랐다: 납>코발트>철.