Analysis of the linear viscoelasticity of polyelectrolytes by magnetic microrheometry-Pulsed creep experiments and the one particle response

作者：Tassieri M; Waigh T A^*; Trinick John; Aggeli Amalia; Evans R M L

来源：Journal of Rheology, 2010, 54(1): 117-131.

DOI：10.1122/1.3266946

• creep
• gels
• polymer electrolytes
• polymer solutions
• rheology
• self-assembly
• viscoelasticity

We report experimental measurements on polyacrylamide (flexible polyelectrolytes), actin (semi-flexible polyelectrolytes), and self-assembled peptide (gelled semi-flexible polyelectrolytes) solutions. The measurements were obtained using a two-pole piece magnetic microrheometer based on an upright Olympus microscope with an oil immersion (x100) lens. Pulsed creep experiments produced high quality data over a wide time range with good agreement between passive particle tracking and magnetic microrheology results. This implies a commonality of the one probe particle response to its viscoelastic environment in both passive and active microrheology experiments.

• 出版日期2010-2