The Structure of Polymer Clusters in Aqueous Solutions of Hydroxypropyl Cellulose

  • O. M. Alekseev Taras Shevchenko National University of Kyiv, Faculty of Physics
  • Yu. F. Zabashta Taras Shevchenko National University of Kyiv, Faculty of Physics
  • V. I. Kovalchuk Taras Shevchenko National University of Kyiv, Faculty of Physics
  • M. M. Lazarenko Taras Shevchenko National University of Kyiv, Faculty of Physics
  • L. A. Bulavin Taras Shevchenko National University of Kyiv, Faculty of Physics
Keywords: hydroxypropyl cellulose, globule, rigid-chain polymer

Abstract

The viscosity, turbidity, and heat capacity of dilute aqueous solutions of hydroxypropyl cellulose have been studied in a concentration interval of 0.047–1.5 g/l and a temperature interval of 20–80 ∘C. The data obtained testify that, if the temperature does not exceed 40 ∘C, hydroxypropyl cellulose molecules are prolate spheroidal globules with semiaxis lengths of 7 and 490 ˚ A. At temperatures above 70 ∘C, the hydroxypropyl cellulose solution consists of clusters; every cluster is composed of 11 globules and has a prolate spheroidal form with semiaxes of 41 and 490 ˚ A. In the temperature interval from 40 to 70 ∘C, the solution concerned contains both globules and clusters, with the concentration of the latter increasing, as the temperature grows.

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Published
2019-04-01
How to Cite
Alekseev, O., Zabashta, Y., Kovalchuk, V., Lazarenko, M., & Bulavin, L. (2019). The Structure of Polymer Clusters in Aqueous Solutions of Hydroxypropyl Cellulose. Ukrainian Journal of Physics, 64(3), 238. https://doi.org/10.15407/ujpe64.3.238
Section
Liquid crystals and polymers