Segmental dynamics in poly(ε‐caprolactone)/poly(L‐lactide) copolymer networks |
| |
| Authors: | Roser Sabater i Serra Jorge L Escobar Ivirico Jose María Meseguer Dueñas Andreu Andrio Balado José Luis Gómez Ribelles Manuel Salmerón Sánchez |
| |
| Institution: | 1. Center for Biomaterials and Tissue Engineering, Universidad Politécnica de Valencia, 46022 Valencia, Spain;2. Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER‐BBN), Valencia, Spain;3. Departament de Física, Universitat Jaume I, 12071 Castellón, Spain;4. Regenerative Medicine Unit, Centro de Investigación Príncipe Felipe, Autopista del Saler 16, 46013 Valencia, Spain |
| |
| Abstract: | Poly(ε‐caprolactone) (PCL) and poly(lactic acid) (PLA) networks were prepared from macromonomer diols functionalized with methacrylic anhydride, which allows one to get self‐crosslinkable polymers. Besides, both macromonomers were copolymerized to get copolymer networks with different compositions (namely, PCL/PLA: 0/100, 70/30, 50/50, 30/70, 100/0). Dielectric and calorimetric experiments allow one to conclude the microphase separation of the system: one phase made of pure PCL domains while the second one consists of caprolactone units, which somehow plasticize PLA and moves its main relaxation (glass transition) to lower temperatures. The effect of crosslinking PLA on the dynamics of the system was further investigated by comparing with the dynamics for linear PLA. © 2008 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 47: 183–193, 2009 |
| |
| Keywords: | copolymerization crosslinking dielectric properties polyesters |
|
|
