Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis of Surface Properties of PVC Thin Film according to Addition of Non-solvent to PVC-THF Solution

PVC-THF 용액에 비용매 첨가에 따른 PVC 박막의 표면 특성 분석

  • Lee, Seung Gyu (Division of Chemical Engineering and Bioengineering, Kangwon National University) ;
  • Moon, Je Cheol (Division of Chemical Engineering and Bioengineering, Kangwon National University) ;
  • Lee, Won Gyu (Division of Chemical Engineering and Bioengineering, Kangwon National University)
  • 이승규 (강원대학교 화공.생물공학부) ;
  • 문제철 (강원대학교 화공.생물공학부) ;
  • 이원규 (강원대학교 화공.생물공학부)
  • Received : 2022.05.20
  • Accepted : 2022.06.15
  • Published : 2022.08.10
Download PDF
⟨ Previous Next ⟩

Abstract

The effect of the addition of a polyvinylchloride (PVC) non-solvent to a PVC-tetrahydrofuran (THF) solution on the surface properties of the PVC thin film was analyzed. The non-solvents used were composed of alcohol-based and non-alcoholic ones. Surface morphologies of PVC thin films according to the addition of the non-solvent were compared. In addition, the hydrophobic properties relying on the surface characteristics were compared. The micro-bubbles generated in the preparation of PVC-THF solution affected the surface morphology of the thin film. In order to implement the normal surface physical properties of the coating thin film at the relatively high concentration of PVC-THF solution, the selection of appropriate drying method was required. When an alcohol-based non-solvent was added, a PVC thin film having a granular porous surface was obtained and exhibited super hydrophobic properties. The volume ratio of the PVC-THF solution to the non-solvent affects the surface shape of the coating thin film. The larger the amount of non-solvent was added, the more advantageous it was to form a super hydrophobic PVC thin film.

폴리염화비닐(polyvinylchloride, PVC)-tetrahydrofuran (THF) 용액에 PVC 비용매의 첨가와 박막 건조 공정이 PVC 박막에 미치는 영향을 분석하였다. 사용된 비용매는 알코올과 비알코올계로 구성되었으며, 첨가에 따른 PVC 박막의 표면 거칠기와 표면 형상의 차별성에 따른 소수성 성질을 비교하였다. PVC-THF 용액 제조과정에 발생하는 용액 내 기포 함유가 박막의 표면 구조에 미치는 영향이 큼을 확인하였다. 상대적인 고농도 PVC-THF 용액에서 코팅 박막의 정상적 표면 물성을 구현하기 위하여 적절한 박막 건조법의 선택이 요구된다. 알코올계 비용매를 첨가할 경우 과립형 형상의 다공성 표면을 갖는 PVC 박막이 얻어져 초소수성 특성을 보인다. 비용매에 대한 PVC-THF 용액의 부피 비는 코팅 박막의 표면 형상에 영향을 주며, 비용매 첨가량이 많을수록 초소수성 PVC 박막을 형성하는 데 유리하다.

Keywords

References

  1. L. Zhang, Z. Zhou, B. Cheng, J. M. DeSimone, and E. T. Samulski, Superhydrophobic behavior of a perfluoropolyether lotus-leaf-like topography, Langmuir, 22, 8576-8580 (2006). https://doi.org/10.1021/la061400o
  2. Q. Zeng, H Zhou, J. Huang, and Z. Guo, Review on the recent development of durable superhydrophobic materials for practical applications, Nanoscale, 13, 11734-11764 (2021). https://doi.org/10.1039/D1NR01936H
  3. K. Liu and L. Jiang, Bio-inspired design of multiscale structures for function integration, Nano Today, 6, 155-175 (2011). https://doi.org/10.1016/j.nantod.2011.02.002
  4. I. Banerjee, R. C. Pangule, and R. S. Kane, Antifouling coatings: Recent developments in the design of surfaces that prevent fouling by proteins, bacteria, and marine organisms, Adv. Mater., 23, 690-718 (2011). https://doi.org/10.1002/adma.201001215
  5. S. Parvate, P. Dixit, and S. Chattopadhyay, Superhydrophobic surf aces: Insights from theory and experiment, J. Phys. Chem. B, 124, 1323-1360 (2020). https://doi.org/10.1021/acs.jpcb.9b08567
  6. W. Barthlott and C. Neinhuis, Purity of the sacred lotus, or escape from contamination in biological surfaces, Planta, 202, 1-8 (1997). https://doi.org/10.1007/s004250050096
  7. X. F. Gao and L. Jiang, Water-repellent legs of water striders, Nature, 432, 36 (2004). https://doi.org/10.1038/432036a
  8. R. N. Wenzel, Resistance of solid surfaces to wetting by water, Ind. Eng. Chem., 28, 988-994 (1936). https://doi.org/10.1021/ie50320a024
  9. A. B. D. Cassie and S. Baxter, Wettability of porous surfaces, Trans. Faraday Soc., 40, 546-551 (1944). https://doi.org/10.1039/TF9444000546
  10. S. Sakka, Current sol-gel activities in Japan, J. Sol-Gel Sci. Technol., 37, 135-140 (2006). https://doi.org/10.1007/s10971-006-6433-z
  11. A. B. Gurav, S. S. Latthe, C. Kappenstein, S. K. Mukherjee, A. V. Rao, and R. S. Vhatkar, Porous water repellent silica coatings on glass by sol-gel method, Porous Mater., 18, 361-367 (2011). https://doi.org/10.1007/s10934-010-9386-0
  12. H. H. Son, J. N. Park, and W. G. Lee, Hydrophobic properties of films grown by torch-type atmospheric pressure plasma in Ar ambient containing C6 hydrocarbon precursor, Korean J. Chem. Eng., 30, 1480-1484 (2013). https://doi.org/10.1007/s11814-013-0075-y
  13. T. I. Kim, C. H. Baek, K. Y. Suh, S. M. Seo, and H. H. Lee, Optical lithography with printed metal mask and a simple super-hydrophobic surface, Small, 4, 182-185 (2008). https://doi.org/10.1002/smll.200700882
  14. Y. C. Jung and B. Bhushan, Mechanically durable carbon nano-tube-composite hierarchical structures with superhydrophobicity, self-cleaning, and low-drag, ACS Nano, 3, 4155-4163 (2009). https://doi.org/10.1021/nn901509r
  15. X. Li, G. Chen, Y. Ma, L. Feng, H. Zhao, L. Jiang, and F. Wang, Preparation of a super-hydrophobic poly(vinyl chloride) surface via solvent-nonsolvent coating, Polymer, 47, 506-509 (2006). https://doi.org/10.1016/j.polymer.2005.08.097
  16. Y. Kang, J. Wang, G. Yang, X. Xiong, X. Chen, L. Yu, and P. Zhang, Preparation of porous super-hydrophobic and super-oleophilic polyvinylchloride surface with corrosion resistance property, Appl. Surf. Sci., 258, 1008-1013 (2011). https://doi.org/10.1016/j.apsusc.2011.07.106
  17. J. N. Park, Y. S. Shin, and W. G. Lee, Effect of the addition of propanol to PVC solution on the structure of thin film and its surface property, Appl. Chem. Eng., 26, 35-39 (2015). https://doi.org/10.14478/ACE.2014.1095