Читать книгу Materials for Biomedical Engineering - Mohamed N. Rahaman - Страница 165

The measured contact angle of a water droplet on polymethyl methacrylate (PMMA) is 70°. Determine the surface energy of PMMA, given that the densities of PMMA and water are 1.2 and 1.0 g/cm³, respectively, and the surface tension of water is 73.0 mN/m.