Impact of the architecture on the crystallization kinetics of poly(ε-caprolactone)/poly(trimethylene carbonate) block copolymers
| Autor: | Blanca Martin-Vaca, Christophe Navarro, Guillaume Fleury, Didier Bourissou, R. Veronica Castillo, Aline Couffin |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Polymers and Plastics Crystallization of polymers Organic Chemistry Kinetics Nucleation General Physics and Astronomy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound Differential scanning calorimetry Chemical engineering chemistry law Polymer chemistry Materials Chemistry Copolymer Trimethylene carbonate Crystallization 0210 nano-technology Caprolactone |
| Zdroj: | European Polymer Journal. 95:711-727 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/j.eurpolymj.2017.05.045 |
| Popis: | Well defined block copolymer architectures based on poly(e-caprolactone) and poly(trimethylene carbonate) were prepared thanks to the methane sulfonic acid (MSA) organocatalyzed ROP of the corresponding monomers. The interplay between the crystallization kinetics, self-assembling behavior and superstructural morphology was investigated. In order to probe the influence of the block copolymer architecture (molecular weight, number of blocks and sequence), kinetics theories of polymer crystallization were applied to the isothermal crystallization kinetics data obtained by differential scanning calorimetry and polarized optical microscopy. The results suggest that the PCL crystallization kinetic is only slightly disturbed by the segregation strength for weakly segregated systems while the block copolymer sequence shows a strong impact on the overall crystallization kinetics, and particularly on the nucleation step due to topological constraints. |
| Databáze: | OpenAIRE |
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