Effect of Tacticity on Viscoelastic Properties of Polystyrene

• Published in: Macromolecules Vol. 44; no. 15; pp. 6155 - 6161
• Main Authors: Huang, Chien-Lin, Chen, Yu-Chen, Hsiao, Ting-Jui, Tsai, Jing-Cherng, Wang, Chi
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 09.08.2011
• Subjects: Applied sciences; Exact sciences and technology; Organic polymers; Physicochemistry of polymers; Properties and characterization; Rheology and viscoelasticity; Molten state; Shear flow; Molecular weight viscosity relationship; Styrene polymer; Experimental study; Syndiotactic polymer; Activation energy; Comparative study; Atactic polymer; Rheological properties

The viscoelastic properties of a series of syndiotactic polystyrene (s-PS) melts with high stereoregularity and different molecular weights (M w = 134–1160 kg/mol) are measured in a wide achievable temperature range (270–310 °C) to determine the entanglement molecular weight (M e ) and flow activati...