본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

Journal of colloid and interface science v.512, 2018년, pp.198 - 207   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Protective composite silica/polyelectrolyte shell with enhanced tolerance to harsh acid and alkali conditions

Gao, Hui (School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom ) ; Nazar, Thaaqib (School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom ) ; Hu, Zhongliang (School of Chemical and Processing Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom ) ; Wen, Dongsheng (School of Chemical and Processing Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom ) ; Sukhorukov, Gleb B. (School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom ) ;
  • 초록  

    Abstract Here we report a facile method to fabricate composite polymeric/inorgainc shells consisting of poly(allylamine hydrochloride) (PAH)/poly-(sodium 4-styrenesulfonate) (PSS) multilayers strengthed by the in situ formed silica (SiO 2 ) nanoparticles (NPs), achieving an enhanced stability under harsh acidic and basic conditions. While the unsiliconised PAH/PSS multilayers show a pH-dependent stability and permeability, the composite PAH/PSS/SiO 2 shells display significantly higher chemical tolerance towards a variety of harsh conditions (1 ≤ pH ≤ 13, high salinity). Upon treatment with either hydrochloric acid (HCl, pH=1) or 0.2 M ethylenediaminetetraacetic acid disodium salt (EDTA, weak acid, chelator), the (PAH/PSS) 6 /SiO 2 shells are able to maintain the integrity of most calcium carbonate (CaCO 3 ) particles, as the shells are tickened and densified by sufficient SiO 2 NPs. When treated with NaOH solution at pH=13, the (PAH/PSS) 6 /SiO 2 shells also display an intact morphology and maintain the ability to intercept rhodamin B (Rh-B) molecules, which is quite different to that observed with the unsiliconised (PAH/PSS) 6 shells. Ultrasound is proved to rapidly break the composite shells, hence can be used as a potential stimulus to trigger the release of encapsulated substances. All the results demonstrate the fact that the composite (PAH/PSS) 6 /SiO 2 shells have a higher chemical stability, lower permeability for small molecules and a greater sensitivity to ultrasound, which is promising for many applications where protecting the activity of small molecules is required, such as the delivery of encapsulated drugs in an unhindered form to their specific destination within the human body. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Enhanced acid/alkali tolerance .   Composite shell .   In situ .   SiO2 .   Ultrasound responsiveness.  

 활용도 분석

  • 상세보기

    amChart 영역
  • 원문보기

    amChart 영역

원문보기

무료다운로드
  • 원문이 없습니다.
유료다운로드

유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.

원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.

NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.

이 논문과 함께 출판된 논문 + 더보기