Crystallization and molecular mobility in renewable semicrystalline copolymers based on polycaprolactone and polyisosorbide
| Autor: | Chaima Bouyahya, Nikolaos D. Bikiaris, Alexandra Zamboulis, Apostolos Kyritsis, Mustapha Majdoub, Panagiotis A. Klonos |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Soft Matter. 18:9216-9230 |
| ISSN: | 1744-6848 1744-683X |
| DOI: | 10.1039/d2sm01198k |
| Popis: | A series of novel block copolymers based on two biodegradable polymers, poly(ε-caprolactone), PCL, and poly(isosorbide), PIS, with PIS fractions 5, 10, and 25 wt%, are studied herein. The aim is to assess the effects of the amorphous PIS phase on the properties of the semicrystalline PCL (majority), in addition to the synthesis strategy. The latter involved the polymerization of caprolactone onto initial PIS of low molar mass, resulting, thus, in gradually shorter PCL blocks when the starting amount of PIS is increased. The structure-property relationship investigation, with an emphasis on molecular mobility and crystallization, involves the following sum of complementary techniques: differential scanning calorimetry, dielectric spectroscopy, polarized optical microscopy and X-ray diffraction. The molecular mobility map for these PCL/PIS and initial PIS is drawn here for the first time. Despite the high glass transition temperature of PIS ( |
| Databáze: | OpenAIRE |
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