DOI QR코드

DOI QR Code

TiO2 하이브리드에 의한 바이오-폴리우레탄 멤브레인 필름의 투습성 향상에 관한 연구

강승구;강구;곽남호;진호진;홍성현;주일중;권오경;민병길
Kang, Seung-Gu;Kang, Goo;Kwak, Nam Ho;Jin, Hojin;Hong, Seong Hyun;Joo, Il Jung;Kwon, Oh Kyung;Min, Byung Gil

  • 투고 : 2016.02.13
  • 심사 : 2016.03.17
  • 발행 : 2016.04.30

초록

The aim of this work was to enhance the water vapor permeability of bio-polyurethane thin film, whose essential application is as a non-microporous type of film in breathable fabrics, by hybridizing it with nano- and micro-sized titania ($TiO_2$). The bio-polyurethanes were synthesized from 4,4-diphenylmethane diisocyanate (MDI) and a polyol mixture containing polyethylene glycol (PEG) and soybean oil-based polyol, that is, bio-glycols by the hydroxylation of soybean oils upto 25% by weight of bio-polyurethane. We studied the effect of hybridizing the bio-polyurethane films with hydrophilic nano- or micro-sized $TiO_2$ on their breathability by measuring the water contact angle and the water vapor permeability of the films; it was found to significantly enhance the permeability of the bio-polyurethane film. Further, nano-$TiO_2$ was more effective than micro-$TiO_2$ due to the higher surface area resulting from nano particles. On the other hand, it is expected that it would be possible to provide additive functionality to the bio-PU membranes due to photocatalytic effect of nano-$TiO_2$.

키워드

bio-polyurethane;nano-titania;hybrid film;breathable film;contact angle;permeability

참고문헌

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과제정보

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