Synthesis of poly[oligo(hexafluoropropylene oxide) perfluoroisopropenylether (PIPE)] graft copolymers with vinylidene fluoride (VDF) using CF 3 radicals
| Autor: | Trevor J. Burgess, Chadron M. Friesen, Abdelatif Manseri, Alessandra Vitale, Taizo Ono, Christine Joly-Duhamel, Bruno Ameduri, Roberta Maria Bongiovanni |
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| Přispěvatelé: | Politecnico di Torino = Polytechnic of Turin (Polito), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Dipartimento di Scienza dei Materiali e Ingegneria Chimica, National Institute of Advanced Industrial Science and Technology (AIST), Trinity Western University, Department of Chemistry, RISE |
| Jazyk: | angličtina |
| Předmět: |
Polymers and Plastics
fluoropolymer Bioengineering 02 engineering and technology 010402 general chemistry 01 natural sciences Biochemistry Contact angle chemistry.chemical_compound hexafluoropropylene oxide Polymer chemistry Copolymer radical copolymerization ComputingMilieux_MISCELLANEOUS Molar mass Comonomer vinylidene fluoride Organic Chemistry thermal properties Hexafluoropropylene oxide 021001 nanoscience & nanotechnology Macromonomer 0104 chemical sciences 19 F-NMR spectroscopy [CHIM.POLY]Chemical Sciences/Polymers chemistry perfluoroisopropenyl ethers graft copolymers 0210 nano-technology Glass transition Fluoride |
| Zdroj: | Polymer Chemistry Polymer Chemistry, Royal Society of Chemistry-RSC, In press, 10 (48), pp.6651-6661. ⟨10.1039/C9PY01453E⟩ |
| ISSN: | 1759-9962 1759-9954 |
| DOI: | 10.1039/c9py01453e |
| Popis: | The synthesis of poly(vinylidene fluoride)-graft-oligomeric hexafluoropropylene oxide graft copolymers [poly[VDF-g-oligo(HFPO)-PIPE] is presented, where VDF, HFPO, and PIPE stand for vinylidene fluoride (CH2CF2), hexafluoropropylene oxide (CF3CFCF2O) and, perfluoroisopropenylether (–OC(CF3)CF2), respectively. First, an 82% isolated yield of oligo(HFPO)-PIPE macromonomer was achieved by using oligo(HFPO) primary iodide as the starting reagent. Then, the radical copolymerization of VDF with the PIPE comonomer, initiated by perfluoro-3-ethyl-2,4-dimethyl-3-pentyl persistent radical (PPFR), was studied under various conditions. The PPFR initiator, stable at room temperature, was able to release a ˙CF3 radical starting from 80 °C. The resulting poly[VDF-g-oligo(HFPO)-PIPE] graft copolymers were produced in good isolated yields (76 to 97%). The molar percentages and molar masses of such graft copolymers were assessed by 19F-NMR spectroscopy using the CF3– end-group label. The molar percentages of VDF and oligo(HFPO)-PIPE comonomers reached up to 99% and 20%, respectively, while the molar masses ranged between 7500 and 42 600 g mol−1. Their thermal properties showed: (i) fair to satisfactory thermostability (T5%d) showing up to 271 °C under nitrogen, (ii) glass transition (Tg) ranged from −81 to −82 °C while (iii) their melting temperature (Tm) ranged between 150 and 163 °C. Moreover, the synthesized copolymers were demonstrated to be highly omniphobic (i.e., simultaneously hydrophobic and oleophobic), showing a water contact angle of ca. 133°, a hexadecane contact angle ca. 70°, and a surface energy as low as 12 mN m−1. |
| Databáze: | OpenAIRE |
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