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

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


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-$TiO_2$.


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


  1. C. Hepburn, "Polyurethane Elastomers: The Ultimate in Multiphase Polymeric Materials", Key Eng. Mater., 1996, 118, 3-18.
  2. J. Datta and E. Glowinska, "Effect of Hydroxylated Soybean Oil and Bio-based Propanediol on the Structure and Thermal Properties of Synthesized Bio-polyurethanes", Ind. Crops Prod., 2014, 61, 84-91.
  3. S.-G. Kang, H.-J. Choi, J. Kim, S. Lee, J. S. Park, O. K. Kwon, and B. G. Min, "Enhancement of Breathability of Biomass-based Polyurethane Non-porous Membrane Films through Hybridizing with Nano-$SiO_2$", Text. Sci. Eng., 2015, 52, 73-78.
  4. J. Datta and E. Glowinska, "Polyurethane Biomaterials Produced with the Use of Modified Natural Oils: A Literature Review", J. Elastomers Plast., 2014, 46, 33-42.
  5. J. Datta and E. Glowinska, "Chemical Modifications of Natural Oils and Examples of Their Usage for Polyurethane Synthesis", J. Elastomers Plast., 2012, 91, 1234-1236.
  6. J. J. van Gorp, J. W. Desalvo, and R. Miller, "Susterra$^{(R)}$ Propanediol-Renewability, Sustainability and Differentiating Performance in Urethane Applications", EI du Pont de Nemours and Company Experimental Station in Wilmington and DuPont Tate & Lyle Bio Products Company, LLC in London, 2010.
  7. J. Datta and A. Balas, "DSC and Thermal Stability Investigation of Novel Poly(ester-ether) Glycols and Poly(ester-ether) Urethanes", J. Therm. Anal. Calorim., 2003, 74, 615-621.
  8. L. J. Sun, C. H Yao, H. F. Zheng, and J. Lin, "A Novel Direct Synthesis of Polyol from Soybean Oil", China Chem. Lett., 2012, 23, 919-922.
  9. D. H. Lee, S. M. Jo, and B. G Min, "Preparation and Antimicrobial Properties of Nylon 6/Nano-$TiO_2$ Nanohybrids", Text. Sci. Eng., 2014, 51, 193-199.
  10. S. W. Lee, T. S. Lee, G. Li, B. B. Won, T. S. Hwang, and S. G. Lee, "Preparation and Characterization of N-doped $TiO_2$/PAN Composite Nanofibers Having Photocatalytic Activity", Text. Sci. Eng., 2009, 46, 311-318.
  11. D. H Lee and B. G. Min, "Preparation and Antibacterial Properties of Nanocomposite Fibers Made of Polyamide 6 and Silver-doped Hydroxyapatite", Fiber. Polym., 2014, 15, 1921-1926.
  12. Z. S. Hu, J. X. Dong, G. X. Chen, and J. Z. He, “Preparation and Tribological Properties of Nanoparticle Lanthanum Borate”, Wear, 2000, 243, 43-47.
  13. Z. S. Petrovic, I. Javni, A. Waddon, and G. J. Banhegyi, "Structure and Properties of Polyurethane-silica Nanocomposites", J. Appl. Polym. Sci., 2000, 76, 133-151.<133::AID-APP3>3.0.CO;2-K
  14. C. T. Hsieh, F. L. Wu, and S. Y. Yang, "Superhydrophobicity from Composite Nano/microstructures: Carbon Fabrics Coated with Silica Nanoparticles", Surf. Coat. Tech., 2008, 202, 6103-6108.
  15. D. Kurniawana, S. Morita, and K. Kitagawa, "Durability of Nafion-hydrophilic Silica Hybrid Membrane against Trace Radial Species in Polymer Electrolyte Fuel Cells", Microchem. J., 2013, 108, 60-63.
  16. D. Xing, H. Zhang, L. Wang, Y. Zhai, and B. Yi, "Investigation of the Ag-$SiO_2$/sulfonated Poly(biphenyl ether sulfone) Composite Membranes for Fuel Cell", J. Membr. Sci., 2007, 296, 9-14.
  17. S. Lin, J. Huang, P. R. Chang, S. Wei, Y. Xu, and Q. Zhang, "Structure and Mechanical Properties of New Biomass-based Nanocomposite: Castor Oil-based Polyurethane Reinforced with Acetylated Cellulose Nanocrystal", Carbohydr. Polym., 2013, 95, 91-99.


연구 과제 주관 기관 : 산업통상부