Periodic Swelling and Collapse of Polyelectrolyte Brushes Driven by Chemical Oscillation | Zendy

Guangming Liu | Zendy; Guangzhao Zhang | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Periodic Swelling and Collapse of Polyelectrolyte Brushes Driven by Chemical Oscillation

Author(s) -

Guangming Liu,

Guangzhao Zhang

Publication year - 2008

Publication title -

the journal of physical chemistry b

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.864

H-Index - 392

eISSN - 1520-6106

pISSN - 1520-5207

DOI - 10.1021/jp801533r

Subject(s) - quartz crystal microbalance , polyelectrolyte , oscillation (cell signaling) , ferrocyanide , swelling , dissipation , materials science , viscosity , belousov–zhabotinsky reaction , acrylic acid , modulus , elastic modulus , chemistry , composite material , polymer , electrode , adsorption , thermodynamics , biochemistry , physics , monomer

Poly(acrylic acid) (PAA) chains exhibit conformational change in response to pH, whereas bromate-sulfite-ferrocyanide (BSF) solution shows pH oscillation between 3.2 and 6.6. By use of quartz crystal microbalance with dissipation (QCM-D), we have investigated the pH induced conformational change of PAA brushes under a continuous flow of BSF solution in real time. The changes in frequency and dissipation clearly indicate the periodic swelling and collapse of brushes with pH oscillation. The changes in thickness, viscosity, and elastic modulus further indicate the oscillation of the interface.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research