Using contact angle measurement technique for determination of the surface free energy of B-SBA-15-x materials

ÇITAK A., YARBAŞ T.

International Journal of Adhesion and Adhesives, cilt.112, 2022 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 112
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.ijadhadh.2021.103024
  • Dergi Adı: International Journal of Adhesion and Adhesives
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: B-SBA-15, Boron, Contact angle measurement, Direct hydrothermal synthesis, Mesoporous materials, Surface energy
  • Bilecik Şeyh Edebali Üniversitesi Adresli: Evet

Özet

© 2021 Elsevier LtdPure and boron-containing, Santa Barbara Amorphous (SBA-15) mesoporous materials and B-SBA-15-x (x is molar ratio of Si/B = 50, 30, 10), were synthesized via a direct hydrothermal method. Samples were characterized by XRD, BJH pore size distribution and SEM techniques. A contact angle technique was used to determine surface free energy and its dispersive and polar components. For this purpose, ethylene glycol (EG), di-iodomethane (DIM), formamide (FA) and water were used as model liquids to detect the contact angles. The OWRK/Fowkes approach was used to calculate the surface free energy values. Total surface free energy (γS) values of pure SBA-15 and B-SBA-15-50, B-SBA-15-30, B-SBA-15-10 were calculated as 64.365, 63.545, 63.490 and 64.218 mJ/m2 at room temperature, respectively. The main results of the study can be summarized as follows: (i) The contact angle measurement technique is suitable for determining the total surface free energy (γS) and its dispersive and polar components (γSd and γSp, respectively) of SBA-15 mesoporous materials and (ii) Addition of boron did not have a significant impact on the characteristic structure of SBA-15.