Formation of polyelectrolyte complexes (PECs) is based on the result of interactions between amino groups and the carboxyl groups present in chitosan, and hyaluronic acid respectively.The phase behavior and chain conformation of polyelectrolyte complexes in salted aqueous solutions of sodium hydroxide causes the charge fraction of these complexes to be adjusted by pH. Moreover, it can be observed that increasing pH results in higher yielding volume fraction and water content of dense coacervates formed between net pure PECs. This contrast with a decrease in the critical NaOH concentration is required for coacervation onset, as the charge fraction of PECs decreases accordingly. The hydrophobicity of the PECs solution is linked to a reduction in charge fraction with increasing pH.
Миллс С., Грибиниченко Т.Н., Шаньшина А.Д. (науч. рук. Успенская М.В.) UNDERSTANDING THE BEHAVIOUR OF POLYELECTROLYTE COMPLEXES UNDER DIFFERENT pH // Сборник тезисов докладов конгресса молодых ученых. Электронное издание. – СПб: Университет ИТМО, [2024]. URL: https://kmu.itmo.ru/digests/article/12794