'工学部/工学系研究科 プレスリリース' blog (64135473799) of hub id 20511701

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Universal Equation of State Describes Osmotic Pressure throughout Gelation Process

 

Authors
Takashi Yasuda, Naoyuki Sakumichi, Ung-il Chung, Takamasa Sakai

Abstract
The equation of state of the osmotic pressure for linear-polymer solutions in good solvents is universally described by a scaling function. We experimentally measure the osmotic pressure of the gelation process via osmotic deswelling. We find that the same scaling function for linear-polymer solutions also describes the osmotic pressure throughout the gelation process involving both the sol and gel states. Furthermore, we reveal that the osmotic pressure of polymer gels is universally governed by the semidilute scaling law of linear-polymer solutions.


Physical Review Letters : https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.267801