Experimental static light scattering study on the scattering parameters for Pluronic | ||||
| Benha Journal of Applied Sciences | ||||
| Article 35, Volume 7, Issue 5, May 2022, Page 257-263 PDF (871.71 K) | ||||
| Document Type: Original Research Papers | ||||
| DOI: 10.21608/bjas.2022.261444 | ||||
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| Authors | ||||
| Sabah F. khater1; R. ghazy2; N. Hendawya1; El-Refaie kenawy3; Ahmed Farouk Elmekawy2; M. H. makled1; Ahmed R. ghazy2 | ||||
| 1Physics dept., Faculty of Science, Benha Univ., Benha, Egypt | ||||
| 2Physics dept., Faculty of Science, Tanta Univ., Tanta, Egypt | ||||
| 3chemistry dept., Faculty of Science, Tanta Univ., Tanta, Egypt | ||||
| Abstract | ||||
| Static light scattering from an aqueous solution of Pluronic F-108 prill has been measured over the angles range (40o to 140o) for four different concentrations (0.004, 0.006, 0,008, 0.01 gm/ml). A home build multiangle static light scattering experiment was used to calculate the Rayleigh ratio and construct the Zimm plot, which was used to calculate the radius of gyration , the second virial coefficient A2, and the molecular weight . The refractive index was measured by abbe's refractometer to calculate refractive index increment . The measured data show that the molecular weight of Pluronic F-108 prill is 14661 gm/mole, which is a medium molecular weight. The second viral coefficient is greater than zero, which means that the Pluronic F-108 prill likes the solvent (deionized water) more than itself. While the radius of gyration is 1094 nm, which is a little bit large as in an aqueous environment these block copolymers self-assemble into micelles. | ||||
| Keywords | ||||
| Laser scattering; static laser scattering; pluronic | ||||
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