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European Polymer Journal, Volume 62, 2015, Pages 43–50.
Liang Yuan2, Nasrollah Hamidi1, Shaleesh Smith1, Felicia Clemons1, Amid Hamidi1, Chuanbing Tang2.
- Department of Biological and Physical Sciences, South Carolina State University, Orangeburg, South Carolina 29115, United States.
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States.
Abstract
Renewable resin acid-substituted polycaprolactone is prepared for characterization of physical properties of polymers. Six samples of dehydroabietic acid-substituted polycaprolactone (PCL-g-DAPE) with various molecular weight were synthesized by a combination of ring-opening polymerization and click chemistry. These polymers were characterized by on-line two angle light scattering and differential pressure viscosity. The values of dn/dc, average molecular weight, intrinsic viscosity, hydrodynamic radius, and radius of gyration were determined. Mark-Houwink double logarithmic relations of intrinsic viscosity and weight average molecular weight as well as Stockmayer–Fixman plots were established to scale the dimensions and conformation of PCL-g-DAPE chains related to their molar mass. The results indicated that PCL-g-DAPE is a flexible-coil polymer, similar to poly(methyl acrylate). Such properties were somewhat unexpected, considering the bulky group in the polymer side chains.
