• Title/Summary/Keyword: 고분자물질

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Self-healing Polymer Coatings in Corrosive Environments (부식 환경하에서의 자가치료성 고분자 코팅)

  • Jo, Su-Hyeon
    • Proceedings of the Korean Institute of Surface Engineering Conference
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    • 2009.05a
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    • pp.115-115
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    • 2009

  • 하부 금속소재의 부식방지 및 코팅 도막의 자기치료 효과를 가지는 고분자 코팅을 마이크로 캡슐화된 치료물질 및 촉매의 분산에 의하여 구성하였으며 도막 손상 시에는 이러한 치료물질들이 손상부위로 흘러들어 소지를 보호하는 효과를 가지게 된다. 자기치료성 고분자는 실험실적 모델 뿐아니라 산업적으로 중요한 코팅 시스템 등에 광범위하게 응용되어질 수 있다.

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Decreasing Particle Size of (+)-Dihydromyricetin Using Hydrophilic Polymer in Fractional Precipitation (분별침전에서 친수성 고분자 물질을 이용한 (+)-dihydromyricetin의 입자크기 감소)

  • Ji, Seong Bin;Kim, Jin-Hyun
    • Korean Chemical Engineering Research
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    • v.56 no.3
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    • pp.370-375
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    • 2018

  • In this study, we have applied fractional precipitation with hydrophilic polymer in order to decrease the particle size of the (+)-dihydromyricetin from plant materials. When compared with the case where no hydrophilic polymer was employed, the addition of hydrophilic polymer in fractional precipitation resulted in a considerable decrease in the size of the (+)-dihydromyricetin precipitate. Among the polymers used, HPMC 2910 was the most effective for inhibition of precipitate growth. A polymer concentration of 0.1% (w/v) yielded the smallest particle size. The particle size was reduced by ~40% compared to control. In addition, the precipitate size was inversely correlated with the absolute value of the zeta potential of the suspension with polymer.

  • https://doi.org/10.9713/kcer.2018.56.3.370 인용 PDF KSCI