Wetting and other physical characteristics of polycarbonate surface textured using laser ablation

Yilbaş, Bekir Sami; Khaled, Mazen; Abu-Dheir, Numan; Al-Aqeeli, N.; Said, S.A.M.; Ahmed, Anas; Varanasi, Kripa K.; Toumi, Y.K.

doi:10.1016/j.apsusc.2014.09.052

Cited by 43 publications

(30 citation statements)

References 48 publications

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“…FTIR data for the PDMS samples after the crystallized PC surface was copied are also shown in Figure . The as‐received sample demonstrated the absorption spectrum of a typical PC wafer . In the case of the crystallized surface, the presence of the absorption band at 2874–2969 cm −1 was related to the CH bond stretching vibrations taking place, and the absorption band at 860–680 cm −1 corresponded to the bending vibrations of the CH bond.…”

Section: Resultsmentioning

confidence: 96%

“…The characteristics of surface hydrophobicity depend on the surface texture and surface free energy; in this case, a surface texture composed of micropillars/nanopillars with a low surface energy is desirable . Several methods have been reported and strategies have been introduced to improve the surface hydrophobicity . In general, these methods are associated with multistep procedures and mostly involve harsh conditions, specialized reagents, and high costs.…”

Section: Introductionmentioning

confidence: 99%

“…In general, these methods are associated with multistep procedures and mostly involve harsh conditions, specialized reagents, and high costs. Some of these methods include phase separation, electrochemical deposition, plasma treatment, sol–gel processing, electrospinning, laser texturing, and solution immersion . During these processes, the free energy of the surfaces is modified via changes in the compositions through chemical and physical reactions.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, polycarbonate (PC) wafers can replace glasses for protection from environmental hazardous in domestic applications and industry because of its superior properties, including its high impact resistance, good optical transmission in the visible range, low modulus of elasticity, and good machinability . The crystallization of PC surfaces under a controlled environment generates surface textures composed of microstructures/nanostructures; this significantly improves the surface hydrophobicity . Because of the molecular distortion and optical scattering of the crystallized surface, the optical transmission of the textured surface decreases significantly .…”

Section: Introductionmentioning

confidence: 99%

“…The crystallization of PC surfaces under a controlled environment generates surface textures composed of microstructures/nanostructures; this significantly improves the surface hydrophobicity . Because of the molecular distortion and optical scattering of the crystallized surface, the optical transmission of the textured surface decreases significantly . This limits the application of the textured surface when the transmittance of the visible spectrum of light is required.…”

Section: Introductionmentioning

confidence: 99%

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Solvent‐induced crystallization of a polycarbonate surface and texture copying by polydimethylsiloxane for improved surface hydrophobicity

Yilbaş

Ali

Al-Aqeeli

et al. 2016

J of Applied Polymer Sci

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The influence of the immersion period on the crystallization of polycarbonate (PC) was investigated, and the resulting texture configurations of the crystal structures were reconstructed with polydimethylsiloxane (PDMS). Analytical tools, including optical microscopy, scanning electron microscopy, atomic force microscopy, X-ray diffraction, the sessile drop technique, Fourier transform infrared spectroscopy, microtribometry, and ultraviolet-visible spectrophotometry, were used to characterize crystallized PC and PDMS surfaces. We found that the crystallized PC surface possessed microsize/nanosize spherulites, voids, and fibrils, and the increasing immersion period increased the texture height and spherulite concentration at the surface. The residual stress in the crystallized PC wafer was compressive, and it was on the order of 230 MPa. The friction coefficient of the crystallized PC surface remained lower than that of the as-received PC wafer, and the increase in the immersion period lowered the friction coefficient. The crystallized PC surface demonstrated superhydrophobic characteristics, and the maximum contact angle occurred with 6 min of immersion. The PDMS exactly reconstructed the texture of the crystallized PC surface, except those of the nanofibrils and subnanofibrils. The droplet contact angle attained a higher values for the PDMS replicated surfaces than for those corresponding to the crystallized PC wafer.

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Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Solvent‐induced crystallization of a polycarbonate surface and texture copying by polydimethylsiloxane for improved surface hydrophobicity

Yilbaş

Ali

Al-Aqeeli

et al. 2016

J of Applied Polymer Sci

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Surface and wetting characteristics of textured bisphenol‐A based polycarbonate surfaces: Acetone‐induced crystallization texturing methods

Owais

Khaled

Yilbaş

et al. 2015

J of Applied Polymer Sci

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Polycarbonate (PC) sheet is a promising material for facile patterning to induce hydrophobic self-cleaning and dust repelling properties for photovoltaic panels' protection. An investigation to texture PC sheet surfaces to develop a self-cleaning structure using solvent induced-crystallization is carried out using acetone. Acetone is applied in both liquid and vapor states to generate a hierarchically structured surface that would improve its contacts angle and therefore improve hydrophobicity. The surface texture is investigated and characterized using atomic force microscopy, contact angle technique (Goniometer), optical microscopy, ultravioletvisible spectroscopy (UV-vis) and Fourier transform infrared spectroscopy. The findings revealed that the liquid acetone-induced crystallization of PC surface leads to a hierarchal and hydrophobic surface with an average contact angle of 1358 and average transmittance <2%. However, the acetone vapor induced-crystallization results in a slightly hydrophilic hierarchal textured surface with high transmittance; in which case, average contact angle of 898 and average transmittance of 69% are achieved. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43074.

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A role of lasers in energy materials and future perspectives

Yilbaş

2017

Int J Energy Res

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Wetting and other physical characteristics of polycarbonate surface textured using laser ablation

Cited by 43 publications

References 48 publications

Solvent‐induced crystallization of a polycarbonate surface and texture copying by polydimethylsiloxane for improved surface hydrophobicity

Solvent‐induced crystallization of a polycarbonate surface and texture copying by polydimethylsiloxane for improved surface hydrophobicity

Surface and wetting characteristics of textured bisphenol‐A based polycarbonate surfaces: Acetone‐induced crystallization texturing methods

A role of lasers in energy materials and future perspectives

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