Behavior Classification Physical/Chemistry PA66/HCl Binary System Utilized to Obtain Separation Membranes
Keywords:
polymer-low molecular liquid systems, true solution, PA66/HC binary system
Abstract
The dissolution of polymers in solvents is an interest area of polymers science and technology due to their applications in films and membranes. The starting point for the preparation of polymer membranes by phase inversion is having a thermodynamically stable solution. In this work, the thermodynamic behavior of polyamide 66 (PA66) solutions in formic acid (FA) and in hydrochloric acid (HC ), was studied to evaluate its physical/chemistry classification. The polymer systems may be divided into five classes (types), which incorporate polymer-low molecular liquid systems, ranging from true solutions to dispersions of polymers in liquids. The polyamide 66/formic acid (PA66/FA) binary system is considered a true solution. Several experiments were performed to verify if the polyamide 66/hydrochloric acid (PA66/HC ) binary system has all characteristics of true solution. The analysis showed that the PA66/HC binary system presents all characteristics of true solution, including the final morphology of the membranes that are similar obtained membranes by PA66/FA binary system.
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Published
2016-05-15
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