Effect of temporary network structure on linear and nonlinear viscoelasticity of polymer solutions

• Published in: Korea-Australia rheology journal Vol. 27; no. 2; pp. 151 - 161
• Main Authors: Cho, Kwang Soo, Kim, Jae Woo, Bae, Jung-Eun, Youk, Ji Ho, Jeon, Hyun Jeong, Song, Ki-Won
• Format: Journal Article
• Language: English
• Published: Seoul / Melbourne Korean Society of Rheology, Australian Society of Rheology 01.05.2015; 한국유변학회
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Complex Fluids and Microfluidics; Food Science; Materials Science; Mechanical Engineering; Polymer Sciences; Soft and Granular Matter; 공학일반; shear-thinning fluids; temporary network structure; large amplitude oscillatory shear; strain-frequency superposition; shear-thickening fluids
• ISSN: 1226-119X; 2093-7660
• DOI: 10.1007/s13367-015-0015-y

We investigated the effects of temporary network structures on linear and nonlinear viscoelasticity of polymer solutions by use of oscillatory shear (LAOS) flow. We tested two different types of polymer solutions: entanglement systems and ion complex systems. It was found that the entanglement network is difficult to show shear-thickening while network of ion complex gives rise to shear-thickening. The objectives of this paper are the test of strain-frequency superposition for various polymer solutions and to suggest a new method classifying complex fluids consisting temporary networks using LAOS data.