Abstract
Superhydrophobicity is dependent on both the surface energy and the texture of the surface. These factors are discussed in terms of a series of electrospun poly(methyl methacrylate)-graft-poly(dimethylsiloxane) (PMMA-g-PDMS) copolymers with different poly(dimethylsiloxane) (PDMS) content. These copolymers are synthesized via conventional free radical copolymerization of methyl methacrylate (MMA) and monomethacryloxypropyl-terminated PDMS macromonomers. It is shown how these copolymers can be electrospun to produce copolymer fibers with diameters in the 100-1000 nm range. The effect of the copolymer composition (and hence the surface energy) and the electrospinning tip-to-collector distance (TCD) on the fiber morphology is discussed. The surfaces produced by the electrospinning process show superhydrophobic properties where the preferential surface segregation of the PDMS component is combined with the roughness of the fiber surface. The surface energy of the fibers is varied by variation of the PDMS content in the copolymers as well as by post-spinning modification with corona discharge. The hydrophobicity of the surfaces shows a greater dependence on the PDMS content than on the average fiber diameter. After exposure of these fiber surfaces to corona discharge, the initial superhydrophobic surfaces become easily wettable despite the fact that much of the surface roughness is maintained after exposure. The samples show the phenomena of hydrophobocity recovery after corona exposure. The rate and extent of this recovery depends on the PDMS content and the corona exposure time. Despite the recovery, scanning electron microscopy (SEM), swelling measurements, and confocal Raman spectroscopy show that permanent surface changes have taken place. The surfaces do not recover to their original superhydrophobic state.
Conference
16: World Forum on Advanced Materials, POLYCHAR, Lucknow, India, 2008-02-17–2008-02-21
References
1. doi:10.1039/b501657f, M. Callies, D. Quere. Soft Matter 1, 55 (2005).Search in Google Scholar
2. doi:10.1088/0957-4484/17/19/033, Y. C. Jung, B. Bhushan. Nanotechnology 17, 4970 (2006).Search in Google Scholar
3. doi:10.1021/la950418o, T. Onda, S. Shibuichi, N. Satoh, K. Tsujii. Langmuir 12, 2125 (1996).Search in Google Scholar
4. doi:10.1002/marc.200400065, J. L. Zhang, J. A. Li, Y. C. Han. Macromol. Rapid Commun. 25, 1105 (2004).Search in Google Scholar
5. J. Y. Shiu, C. W. Kuo. In Proceedings of SPIE - The International Society of Optical Engineering, pp. 325-332 (2005).Search in Google Scholar
6. doi:10.1002/marc.200500458, M. H. Jin, X. J. Feng, J. M. Xi, J. Zhai, K. W. Cho. Macromol. Rapid. Commun. 26, 1805 (2005).Search in Google Scholar
7. doi:10.1016/j.apsusc.2004.10.143, K. Teshima, H. Sugimura, Y. Inoue, O. Takai, A. Takano. Appl. Surf. Sci. 244, 619 (2005).Search in Google Scholar
8. doi:10.1021/cm051281i, H. Yabu, M. Shimomura. Chem. Mater. 17, 5231 (2005).Search in Google Scholar
9. doi:10.1002/adma.200402090, F. Shi, Z. Q. Wang, X. Zhang. Adv. Mater. 17, 1005 (2005).Search in Google Scholar
10. doi:10.1002/anie.200500868, L. Xu, W. Chen, A. Mulchandani, Y. Yan. Angew. Chem., Int. Ed. 43, 6009 (2005).Search in Google Scholar
11. doi:10.1021/la047064y, M. Ma, R. M. Hill, J. L. Lowery, S. V. Fridrikh, G. C. Rutledge. Langmuir 21, 5549 (2005).Search in Google Scholar
12. doi:10.1021/cm051281i, H. Yabu, M. Shimonura. Chem. Mater. 17, 5231 (2005).Search in Google Scholar
13. doi:10.1016/j.apsusc.2004.08.035, M. T. Khorasani, H. Mirzadeh, Z. Kermani. Appl. Surf. Sci. 242, 339 (2005).Search in Google Scholar
14. doi:10.1038/nmat856, R. Blossey. Nat. Mater. 2, 301 (2003).Search in Google Scholar
15. M. Minglin, M. H. Randal. Curr. Opin. Colloid Interface Sci. 193 (2006).Search in Google Scholar
16. doi:10.1016/S0032-3861(00)00250-0, J. M. Deitzel, J. Kleinmeyer, D. Harris. Polymer 42, 261 (2001).Search in Google Scholar
17. doi:10.1016/S0032-3861(01)00336-6, J. M. Deitzel, J. D. Kleinmeyer, J. K. Hirvonen. Polymer 42, 8163 (2001).Search in Google Scholar
18. doi:10.1016/S0032-3861(01)00594-8, J. M. Deitzel, W. Kosik, S. H. McKnight. Polymer 43, 1025 (2002).Search in Google Scholar
19. doi:10.1016/0304-3886(95)00041-8, J. Doshi, D. H. Reneker. J. Electrostat. 35, 151 (1995).Search in Google Scholar
20. doi:10.1016/j.polymer.2004.08.071, J. Lyons, C. Li, F. Ko. Polymer 45, 7595 (2004).Search in Google Scholar
21. L. Larrondo, R. S. Marley. J. Polym. Sci., Part B: Polym. Phys. 19, 933 (1981).10.1002/pol.1981.180190603Search in Google Scholar
22. L. Larrondo, R. S. Marley. J. Polym. Sci., Part B: Polym. Phys. 19, 921 (1981).10.1002/pol.1981.180190602Search in Google Scholar
23. L. Larrondo, R. S. Marley. J. Polym. Sci., Part B: Polym. Phys. 19, 909 (1981).10.1002/pol.1981.180190601Search in Google Scholar
24. doi:10.1016/0032-3861(95)93667-B, T. Kawai, M. Akashima, S. Teramachi. Polymer 36, 2851 (1995).Search in Google Scholar
25. doi:10.1002/app.11223, Y. Lee, I. Akiba, S. Akiyama. J. Appl. Polym. Sci. 87, 375 (2003).Search in Google Scholar
26. M. Wang, A. J. Hsieh, G. C. Rutledge. Polymer 46, 3404 (2005).10.1016/j.polymer.2005.02.099Search in Google Scholar
27. doi:10.1016/S1359-0294(03)00004-9, A. Frenot, I. S. Chronakis. Curr. Opin. Colloid Interface Sci. 8, 64 (2003).Search in Google Scholar
28. A. Kiesow, J. Meinhardt, A. Heilmann. Coating 37, 36 (2004).Search in Google Scholar
29. S. M. Kassiriha, S. Tarbiat, M. A. Fard. "Effect of surface treatment methods on the surface tension of plastics", in Advances in Plastics Technology, 5th International Conference, Katowice, Poland (2003).Search in Google Scholar
30. doi:10.1002/(SICI)1097-4628(19991114)74:7<1846::AID-APP29>3.0.CO;2-B, S. Suzer, A. Argun, O. Vatansever, O. Aral. J. App. Polym. Sci. 74, 1846 (1999).Search in Google Scholar
31. M. J. Owen, M. Gentle, T. Orbeck, D. E. Williams. Polymer Surface Dynamics, J. D. Andrade (Ed.), Plenum Press, New York (1988).Search in Google Scholar
32. P. Smith, M. J. Owen. J. Conf. Electr. Insul. Diel. Phen. 829 (1992).Search in Google Scholar
33. doi:10.1016/S0032-3861(97)00484-9, H. Hillborg, U. M. Gedde. Polymer 39, 1991 (1997).Search in Google Scholar
34. doi:10.1002/app.1994.070520914, A. Toth, I. Bertoti, M. Blazso, G. Banhegyi, A. Bognar, X. Szaplonczay. J. Appl. Polym. Sci. 52, 1293 (1994).Search in Google Scholar
35. M. Morra, E. Occhiello, R. Marola, F. Garbassi, P. Humphrey, D. Johnson. J. Colloid Interface Sci. 11, 137 (1990).10.1016/0021-9797(90)90038-PSearch in Google Scholar
36. doi:10.1002/app.1970.070141006, J. R. Hollahan. J. Appl. Polym. Sci. 14, 2499 (1970).Search in Google Scholar
37. R. Scott, S. R. Gaboury, M. W. Urban. Structure Property Relations in Polymers, American Chemical Society Symposium Series No. 236, M. W Urban, C. D. Craver (Eds.), American Chemical Society, Washington, DC (1993).Search in Google Scholar
38. doi:10.1016/S0969-806X(03)00204-4, P. E. Mallon, C. J. Greyling, W. Vosloo, Y. C. Jean. Radiat. Phys. Chem. 68, 453 (2003).Search in Google Scholar
39. doi:10.1016/j.polymer.2004.11.012, M. Meincken, T. A. Berhane, P. E. Mallon. Polymer 46, 203 (2005).Search in Google Scholar
40. doi:10.1016/S0032-3861(98)00866-0, C. J. Buchko, Y. Shen, D. C. Martin, L. C. Chen. Polymer 40, 7397 (1999).Search in Google Scholar
41. doi:10.1016/S0032-3861(99)00068-3, H. Fong, I. Chun, D. H. Reneker. Polymer 40, 4585 (1999).Search in Google Scholar
42. doi:10.1016/j.porgcoat.2005.04.007, S. J. Hinder, C. Lowe, J. T. Maxted, J. F. Watts. Prog. Org. Coat. 54, 104 (2005).Search in Google Scholar
43. C. S. Ha, J. A. Gardella. J. Macromol. Sci. 45, 1 (2005).Search in Google Scholar
44. doi:10.1021/ma00067a009, X. Chen, J. A. Gardella. Macromolecules 26, 3778 (1993).Search in Google Scholar
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