Аннотация
Abstract The conformational transition expanded coil to compact globule for linear and crosslinked poly(4‐but‐3‐en‐1‐ynyl‐1‐methylpiperidin‐4‐ol), poly{1‐[2‐(4‐hydroxy‐1‐methyl‐4‐piperidyl)ethynyl]ethylene}, (1) in aqueous and aqueous‐salt solutions was investigated. The free energy of the conformational transition for linear 1. n HCl was calculated. It was shown that in aqueous solution 1 is characterized by a lower critical solution temperature (LCST). The collapse of crosslinked 1 on changing the ionization state (aqueous salt solution) and temperature was observed and is similar to a phase transition.