Date of Award

6-1965

Degree Name

Bachelor of Science

Department

Paper Science and Engineering

First Advisor

Raymond Janes

Abstract

Introduction

For a number of years, the study of hydrodynamic behavior of cellulose has been limited by the lack of a solvent capable of dissolving this high polymer without degrading its degree of polymerization. The consequence of the degradation is the marked change in the properties of the cellulose molecule in solution. Investigations to improve this problem have generally taken two directions.

The first involves the substitution of derivatives on the reactive alcoholic sites of the molecule (substitution method). This allows the molecule to be dissolved, in appropriate solvents, without degradation during dissolution.

The second involved the search for compounds capable of solvating the unsubstituted cellulose molecule without reducing its degree of polymerization (direct solvation method). The copper-based cuprammonium hydroxide and cupriethylendiamine coordinating agents are perhaps the best examples of such compounds.

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