Light scattering studies of stereocomplex formation of stereoregular poly(methyl methacrylate) in solutions

• Published in: European polymer journal Vol. 41; no. 3; pp. 447 - 452
• Main Authors: Zhao, Yue, Chen, Wenna, Hair, Dennis, Xu, Jian, Wu, Chi, Han, Charles C.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.03.2005; Elsevier
• Subjects: Applied sciences; Exact sciences and technology; Laser light scattering; Organic polymers; Physicochemistry of polymers; Poly(methyl methacrylate); Properties and characterization; Solution and gel properties; Stereocomplex; Laser light scattering; Poly(methyl methacrylate); Stereocomplex; Solvent effect; Intermolecular interaction; Organic solution; Hydrodynamic radius; Temperature effect; Methyl methacrylate polymer; Stereospecific polymer; Experimental study; Intramolecular interaction
• ISSN: 0014-3057; 1873-1945
• DOI: 10.1016/j.eurpolymj.2004.10.031

The structure and stereocomplex formation of multi-stereoblock poly(methyl methacrylates) in three different solvents, acetone, tetrahydrofuran (THF) and chloroform, corresponding to strongly-, weakly- and non-complexing solvent, respectively, were investigated by a combination of static and dynamic laser light scattering. Our results revealed that the stereocomplex was caused by weak interactions, and could be melted at higher temperatures. In THF, the intermolecular and intramolecular interactions could be clearly separated at lower temperatures, and the structure of aggregated chains was linear. In acetone, a more compact structure was obtained, which was corroborated by the fact that the stereocomplex had a higher melting temperature than in THF.