From surface to core: Exploring bulk hydrophobicity in geopolymer tiles

Basit Öğe Kaydı
dc.authoridAkarken, Gürkan / 0000-0002-9265-5156
dc.authoridCengiz, Uğur / 0000-0002-0400-3351
dc.contributor.authorAkarken, Gürkan
dc.contributor.authorCengiz, Uğur
dc.date.accessioned2026-02-03T12:02:46Z
dc.date.available2026-02-03T12:02:46Z
dc.date.issued2025
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThis study presents a pioneering approach to produce superhydrophobic bulk geopolymer tiles (SBGT) using a novel concurrent polymerization and cold-press technique. Unlike traditional hydrophobic coatings that degrade over time, this method achieves bulk hydrophobicity by integrating fluoroalkyl silane (FAS) modification directly into the geopolymerization process. The exothermic heat released during geopolymerization was utilized to trigger a sol-gel reaction, enabling chemical grafting of the hydrophobic agent within the geopolymer matrix. The resulting SBGT materials exhibited exceptional hydrophobic properties, with water contact angles (WCA) exceeding 150 degrees, demonstrating complete superhydrophobicity based on both static and dynamic criteria. Selfcleaning tests confirmed the high dust-repelling capability, and liquid resistance tests demonstrated strong non-wettability against common household liquids (coffee, tea, wine, and milk). Furthermore, sandpaper abrasion and water dripping tests revealed that SBGTs maintain their hydrophobicity even under mechanical stress, highlighting their long-term durability. Additionally, mechanical strength analyses showed that while moderate FAS concentrations enhanced flexural strength, excessive amounts led to a decline due to microstructural disruptions. X-ray diffraction (XRD) and scanning electron microscopy (SEM/EDX) analyses confirmed the transformation of the geopolymer into an amorphous aluminosilicate gel, reinforcing its mechanical integrity and water resistance. This is the first study to successfully implement simultaneous concurrent polymerization and hydrophobic modification in cold press geopolymer synthesis, producing a fully hydrophobic bulk material without post-processing treatments. These findings demonstrate the commercial potential of SBGTs for selfcleaning, moisture-resistant, and energy-efficient building applications.
dc.description.sponsorshipCanakkale Onsekiz Mart University Scientific Research Projects Coordination Unit [FDK-2024-4661]
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [2240501]
dc.description.sponsorshipScientific and Technological Research Council of Turkiye (TUBITAK) [BIDEB 2211-C]
dc.description.sponsorshipThis study was supported by the Canakkale Onsekiz Mart University Scientific Research Projects Coordination Unit (Project ID: FDK-2024-4661) and the Scientific and Technological Research Council of Turkey (TUBITAK, Project ID: 2240501) . Gurkan Akarken thanks the Scientific and Technological Research Council of Turkiye (TUBITAK) BIDEB 2211-C National Ph.D. Scholarship Program for the financial support. The authors also extend their gratitude to the Kale Seramik R & D Center laboratory in Canakkale for providing XRD, strength characterizations.
dc.identifier.doi10.1016/j.conbuildmat.2025.142863
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-105011688124
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2025.142863
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34867
dc.identifier.volume492
dc.identifier.wosWOS:001542533000001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofConstruction and Building Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20260130
dc.subjectBulk repellency
dc.subjectGeopolymer tile
dc.subjectSuperhydrophobicity
dc.subjectSelf-cleaning
dc.subjectBuilding material
dc.titleFrom surface to core: Exploring bulk hydrophobicity in geopolymer tiles
dc.typeArticle

Dosyalar

Orijinal paket
Listeleniyor 1 - 1 / 1
[ X ]
İsim:
Ugur Cengiz_Makale.pdf
Boyut:
9.15 MB
Biçim:
Adobe Portable Document Format
İndir

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Enerji Kaynakları Uygulama ve Araştırma Merkezi Yayın Koleksiyonu
Kimya Mühendisliği Bölümü Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu