Thermodynamic analysis and injection molding of hierarchical superhydrophobic polypropylene surfaces
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Can Weng
Abstract
In this study, thermodynamic analysis of the hierarchical structure of the 3D cylinder-textured surface model was performed. The wetting states at different penetration depths, the effects of three components on the wetting properties, and all equilibrium contact angle of the hierarchical structure were investigated. It was found that the interaction between micropillars and nanopillars can affect the transition energy barrier and the transition pitch in the wetting-state transition process. This showed that all components would play a key role in enhancing the surface hydrophobicity. Polypropylene (PP) surfaces with mono micropillars and hierarchical structures were both fabricated by injection molding. Mold inserts for hierarchical structures were obtained by the combination of a punching plate and an anodized aluminum alloy plate. The static contact angle (CA) and the roll-off angle of injection-molded PP surfaces were measured and analyzed from the perspective of thermodynamic analysis. With the hierarchical structures, a static CA of about 163° as well as a roll-off angle of about 5° was approached. Compared with a mono micropillar-structured PP surface, the hierarchical-structured PP surface has a larger static CA and a smaller roll-off angle. The work demonstrates an inexpensive and reproducible technique to fabricate function-designed controlled hierarchical structures on PP material.
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: 51775562
Award Identifier / Grant number: 51305465
Funding statement: The authors would like to acknowledge financial support from the National Natural Science Foundation of China (grant nos.: 51775562 and funder id: http://dx.doi.org/10.13039/501100001809, 51305465).
Nomenclature
- E
Normalized Gibbs energy (NGE) of the system (J)
- Ec
Gibbs energy (GE) of the composite state
- Enc
GE of the noncomposite state
- dE
Normalized transition Gibbs energy barrier (GEB) (J)
- ΔE
The difference of GE between noncomposite and composite states
- Fsys
GE of the system (J)
- fSL
Area fraction of solid-liquid interface
- g
Gravitational acceleration (m/s2)
- L
Radius of the base area of the drop on the surface (m)
- r
Roughness ratio
- rcap
Capillary length of drop radius (m)
- Sla
Contact area of the liquid-air interface (m2)
- Ssa
Contact area of the solid-air interface (m2)
- Ssl
Contact area of the solid-liquid interface (m2)
- Ssurface
Surface area of patterned structure
- VTOP
Liquid volume on the top of the roughness (m3)
- VP
Total liquid volume that has penetrated into the pores (m3)
- z
Penetration depth of liquid (m)
- θC
Cassie apparent contact angle (°)
- θW
Wenzel apparent contact angle (°)
- θY
Young’s contact angle or intrinsic contact angle (°)
- ρ
Density (kg/m3)
- γsa
Interfacial energy per unit area of the solid-air interface (J/m2)
- γsl
Interfacial energy per unit area of the solid-liquid interface (J/m2)
- γla
Interfacial energy per unit area of the liquid-air interface (J/m2)
- CA
Contact angle (°)
- ECA
Equilibrium contact angle (°)
- FE-SEM
field emission scanning electron microscope
- GE
Gibbs energy (J)
- GEB
Gibbs energy barrier (J)
- NGE
Normalized Gibbs energy (J)
- PP
polypropylene
Author contributions: Can Weng wrote the manuscript; Jin Yang edited this manuscript and performed the experiments; Fei Wang carried out the thermodynamic analysis; Tao Ding assisted in performing experiments and analyzed the data; Zhanyu Zhai directed the research and helped to revise the manuscript. The manuscript was finalized through contributions from all authors, and all authors have approved the final manuscript.
References
[1] Wang S, Jiang L. Adv. Mater. 2007, 19, 3423–3424.10.1002/adma.200700934Suche in Google Scholar
[2] Bhushan B, Yong CJ. Prog. Mater. Sci. 2011, 56, 1–108.10.1016/j.pmatsci.2010.04.003Suche in Google Scholar
[3] Miwa M, Nakajima A, Fujishima A, Hashimoto K, Watanabe T. Langmuir 2000, 16, 5754–5760.10.1021/la991660oSuche in Google Scholar
[4] Guo SC, Wu F, Fang L, Mao CY, Dou YY. Mater. Technol. 2015, 30, 43–49.10.1179/1753555714Y.0000000198Suche in Google Scholar
[5] Jiang L, Tang Z, Clinton RM, Breedveld V, Hess DW. ACS Appl. Mater. Interfaces 2017, 9, 9195–9203.10.1021/acsami.7b00829Suche in Google Scholar PubMed
[6] Barthwal S, Lim SH. Appl. Surf. Sci. 2015, 328, 296–305.10.1016/j.apsusc.2014.11.182Suche in Google Scholar
[7] Liao Y, Loh CH, Wang R, Fane AG. ACS Appl. Mater. Interfaces 2014, 6, 16035–16048.10.1021/am503968nSuche in Google Scholar PubMed
[8] Barthlott W, Neinhuis C. Planta 1997, 202, 1–8.10.1007/s004250050096Suche in Google Scholar
[9] Jokinen V, Suvanto P, Garapaty AR, Lyytinen J, Koskinen J, Franssila S. Colloids Surf. A 2013, 434, 207–212.10.1016/j.colsurfa.2013.05.061Suche in Google Scholar
[10] Marquez-Velasco J, Vlachopoulou ME, Tserepi A, Gogolides E. Microelectron. Eng. 2010, 87, 782–785.10.1016/j.mee.2009.11.113Suche in Google Scholar
[11] Feng J, Tuominen MT, Rothstein JP. Adv. Funct. Mater. 2011, 21, 3715–3722.10.1002/adfm.201100665Suche in Google Scholar
[12] Okulova N, Johansen P, Christensen L, Taboryski R. Nanomaterials 2018, 8, 831.10.3390/nano8100831Suche in Google Scholar PubMed PubMed Central
[13] Puukilainen E, Rasilainen T, Suvanto M, Pakkanen TA. Langmuir 2007, 23, 7263–7268.10.1021/la063588hSuche in Google Scholar PubMed
[14] Huovinen E, Takkunen L, Suvanto M, Pakkanen TA. J. Micromech. Microeng. 2014, 24, 055017.10.1088/0960-1317/24/5/055017Suche in Google Scholar
[15] Chen AF, Huang HX. J. Phys. Chem. C 2016, 120, 1556–1561.10.1021/acs.jpcc.5b10079Suche in Google Scholar
[16] Li W, Amirfazli A. J. Colloid Interface Sci. 2005, 292, 195–201.10.1016/j.jcis.2005.05.062Suche in Google Scholar PubMed
[17] Lu T, Guo Z, Li W. J. Colloid Interface Sci. 2014, 436, 19–28.10.1016/j.jcis.2014.09.009Suche in Google Scholar PubMed
[18] Liu HH, Zhang HY, Li W. Langmuir 2011, 27, 6260–6267.10.1021/la200028xSuche in Google Scholar PubMed
[19] Zhao J, Su Z, Yan S. Appl. Surf. Sci. 2015, 357, 1625–1633.10.1016/j.apsusc.2015.10.031Suche in Google Scholar
[20] He L, Liang W, Wang Z, Yang B, Duan Z, Chen Y. Colloids Surf. A. 2016, 504, 201–209.10.1016/j.colsurfa.2016.05.070Suche in Google Scholar
[21] Sajadinia SH, Sharif F. J. Colloid Interface Sci. 2010, 344, 575–583.10.1016/j.jcis.2009.12.058Suche in Google Scholar PubMed
[22] Young T. Philos. T. Roy. Soc. B. 1805, 95, 65–87.10.1098/rstl.1805.0005Suche in Google Scholar
[23] Wenzel RN. Ind. Eng. Chem. 1936, 28, 988–994.10.1021/ie50320a024Suche in Google Scholar
[24] Cassie ABD, Baxter S. Trans. Faraday Soc. 1944, 40, 546–551.10.1039/tf9444000546Suche in Google Scholar
[25] Patankar NA. Langmuir 2004, 20, 7097–7102.10.1021/la049329eSuche in Google Scholar PubMed
[26] Pompe T, Herminghaus S. Phys. Rev. Lett. 2000, 85, 1930–1933.10.1103/PhysRevLett.85.1930Suche in Google Scholar PubMed
[27] Patankar NA. Langmuir 2003, 19, 1249–1253.10.1021/la026612+Suche in Google Scholar
[28] Barbieri L, Wagner E, Hoffmann P. Langmuir 2007, 23, 1723–1734.10.1021/la0617964Suche in Google Scholar PubMed
[29] Bhushan B, Jung YC. Ultramicroscopy 2007, 107, 1033–1041.10.1016/j.ultramic.2007.05.002Suche in Google Scholar PubMed
[30] Suh KY, Jon S. Langmuir 2005, 21, 6836–6841.10.1021/la050878+Suche in Google Scholar PubMed
[31] Jeong HE, Lee SH, Kim JK, Suh KY. Langmuir 2006, 22, 1640–1645.10.1021/la0526434Suche in Google Scholar PubMed
[32] Rahmawan Y, Moon MW, Kim KS, Lee KR, Suh KY. Langmuir 2010, 26, 484–491.10.1021/la902129kSuche in Google Scholar PubMed
[33] Yüce MY, Demirel AL. Phys. Condens. Matter 2008, 64, 493–497.10.1140/epjb/e2008-00042-0Suche in Google Scholar
[34] Liu SS, Zhang CH, Zhang HB, Zhou J, He JG, Yin HY. Chin. Phys. B 2013, 22, 436–444.10.1088/1674-1056/22/10/106801Suche in Google Scholar
[35] Kim DH, Kim Y, Hwang SH, Bang YS, Cho CR, Kim YK, Kim JM. Appl. Surf. Sci. 2011, 257, 8985–8992.10.1016/j.apsusc.2011.05.077Suche in Google Scholar
[36] Park HK, Yoon SW, Do YR. J. Mater. Chem. 2012, 22, 14035–14041.10.1039/c2jm31978kSuche in Google Scholar
[37] Sung YH, Kim YD, Choi HJ, Shin R, Kang S. Appl. Surf. Sci. 2015, 349, 169–173.10.1016/j.apsusc.2015.04.141Suche in Google Scholar
[38] Zhou M, Jiang B, Weng C, Zhang L. Microsyst. Technol. 2017, 23, 983–989.10.1007/s00542-016-2819-1Suche in Google Scholar
[39] Weng C, Zhou M, Jiang B, Lv H. Int. Commun. Heat Mass 2016, 75, 92–99.10.1016/j.icheatmasstransfer.2016.03.025Suche in Google Scholar
[40] Li X, Gong N, Yang C, Zeng S, Fu S, Zhang K. J. Mater. Process. Technol. 2018, 255, 635–643.10.1016/j.jmatprotec.2018.01.008Suche in Google Scholar
[41] Li X, Liu F, Gong N, Huang P, Yang C. J. Mater. Process. Technol. 2017, 249, 386–393.10.1016/j.jmatprotec.2017.06.034Suche in Google Scholar
©2020 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Material properties
- Characterization and mechanism of accelerated curing of adhesives by in situ ultrasonic vibration for bonded joints
- Effects of tension fatigue on the structure and properties of carbon black filled-SBR and SBR/TPI blends
- New fire-resistant epoxy thermosets: nonisothermal kinetic study and flammability behavior
- Preparation and assembly
- The layer-structure transition of glass-fiber-reinforced composite materials
- Geraniol and cinnamaldehyde as natural antibacterial additives for poly(lactic acid) and their plasticizing effects
- Formation of PA12 fibres via melt electrospinning process: parameter analysis and optimisation
- Flexible epoxy composite coatings modified by reactive rubber with improvements in water and corrosive resistances
- Nanocrystalline cellulose prepared by double oxidation as reinforcement in polyvinyl alcohol hydrogels
- Engineering and processing
- Improvement of stability and release of (-)-epicatechin by hot melt extrusion
- Thermodynamic analysis and injection molding of hierarchical superhydrophobic polypropylene surfaces
Artikel in diesem Heft
- Frontmatter
- Material properties
- Characterization and mechanism of accelerated curing of adhesives by in situ ultrasonic vibration for bonded joints
- Effects of tension fatigue on the structure and properties of carbon black filled-SBR and SBR/TPI blends
- New fire-resistant epoxy thermosets: nonisothermal kinetic study and flammability behavior
- Preparation and assembly
- The layer-structure transition of glass-fiber-reinforced composite materials
- Geraniol and cinnamaldehyde as natural antibacterial additives for poly(lactic acid) and their plasticizing effects
- Formation of PA12 fibres via melt electrospinning process: parameter analysis and optimisation
- Flexible epoxy composite coatings modified by reactive rubber with improvements in water and corrosive resistances
- Nanocrystalline cellulose prepared by double oxidation as reinforcement in polyvinyl alcohol hydrogels
- Engineering and processing
- Improvement of stability and release of (-)-epicatechin by hot melt extrusion
- Thermodynamic analysis and injection molding of hierarchical superhydrophobic polypropylene surfaces
