• Title/Summary/Keyword: Colloid

Search Result 428, Processing Time 0.024 seconds

양이온성 Polysulfone막의 제조

  • 현진호;윤영인;탁태문
    • Proceedings of the Membrane Society of Korea Conference
    • /
    • 1993.10a
    • /
    • pp.30-30
    • /
    • 1993
  • Polysulfone은 물리적, 화학적 성질이 우수한 재질로 분리막의 소재로 많이 이용되고 있다. 대부분의 막이 sieving mechanism에 기초를 두고 있기 때문에, 크기가 비슷한 물질의 혼합물일 경우는 분리할 수가 없다. 그러나 고정된 전하를 가지고 있는 Polysulfone 하전막을 제조하여, 전기적 효과에 의해서 전하를 띠는 물질과 중성인 물질을 분리해 낼 수 있다. 또한 하전막은 막과 동일한 전하를 가지고 있는 물질과 colloid를 배제하여 막표면에 gel layer가 형성되는 것을 방지하여 fouling을 감소시킬 수 있다.

  • PDF

A Study on Performance of Building Material using nano-hydrated Aluminum for Fire-Resistance (나노 수산화알루미나를 이용한 건설소재의 내화성능 개선연구)

  • Jo, Byung-Wan;Park, Jong-Bin
    • Proceedings of the Korea Concrete Institute Conference
    • /
    • 2004.05a
    • /
    • pp.826-829
    • /
    • 2004
  • An increasing interest in fire safety engineering can currently be identified in Korea and overseas. The fire-resistant characteristics of spray coating material for fire protection with or without nano $Al(OH)_3$ colloid has been experimentally investigated and the results are presented in this paper. The fire-resistance characteristics of spray coating material with nano $Al(OH)_3$ were superior to those without $Al(OH)_3$. Especially, spray coating material with nano material showed that thermal characteristic in the early days was remarkably excellent.

  • PDF

Tolaasin Forms Various Types of Ion Channels in Lipid Bilayer

  • Cho, Kwang-Hyun;Kim, Young-Kee
    • Proceedings of the Korean Biophysical Society Conference
    • /
    • 1998.06a
    • /
    • pp.34-34
    • /
    • 1998
  • Tolaasin is a channel forming bacterial toxin produced by Pseudomonas tolaasii and causes a brown blotch disease on cultivated oyster mushrooms. When tolaasin molecules form channels in the membranes of mushroom cells, they destroy cellular membrane structure, known as 'colloid osmotic lysis'. In order to understand the molecular mechanisms forming membrane channels by tolaasin molecules, we have investigated the electrophysiological characteristics of tolaasin-induced channels in lipid bilayer.(omitted)

  • PDF

Preparation of Microcapsules and Their Application (Poly (L-lactide) Microcapsule) (마이크로캡슐의 제조와 그 응용(폴리락티드 마이크로캡슐))

  • 홍기정;박수민
    • Textile Coloration and Finishing
    • /
    • v.10 no.2
    • /
    • pp.29-36
    • /
    • 1998
  • Poly(L-lactide) microcapsules containing hydrophilic penetrate were prepared by interfacial precipitation method through solvent evaporation from w/o/w emulsion. Effect of four determinative process parameters on the particle size distributions, morphologies, and release properties of microcapsules coated with poly(L-lactide) was investigated. Moreover, susceptible functional cotton fabrics treated with the mentioned microcapsules were prepared and laundry test up to 15 times were done to determine fastness properties. As a result, the prepared poly(L-lactide) microcapsules with a more sharp-distributive, rounder, and more permeable membranes could be prepared by means of protective colloid concentration, solution volume and stirring rate.

  • PDF

Antimicrobial of PET fabric treated with Corona using Ag nano colloid Solution (은나노 콜로이드 용액을 이용한 코로나 처리된 PET 직물의 항균성)

  • Jeong, Ji-Won;Lee, Jae-Ung;Kim, Sam-Su
    • Proceedings of the Korean Society of Dyers and Finishers Conference
    • /
    • 2008.10a
    • /
    • pp.65-66
    • /
    • 2008
  • 은나노 콜로이드를 플라즈마 처리 한 PET 직물과 플라즈마 처리를 하지 않은 PET 직물에 적용시킨 후 항균성을 측정하였다. 플라즈마 처리 PET에 은나노가 잘 부착되었으며, 항균성 또한 우수하였다.

  • PDF