A series of poly(hexamethylene 2,5-furanodicarboxylate)-block-poly(tetrahydrofuran) (PHF-b-F-pTHF) copolymers were synthesized using a two-stage procedure, employing transesterification and polycondensation. The content of pTHF flexible segments varied from 25 to 75 wt.%. 1H nuclear magnetic resonance (NMR) and Fourier transformed infrared spectroscopy (FTIR) analyses were applied to confirm the molecular structure of the materials. Differential scanning calorimetry (DSC), dynamic mechanical measurements (DMTA), and X-ray diffraction (XRD) allowed characterizing the supramolecular structure of the synthesized copolymers. SEM analysis was applied to show the differences in the block copolymers’ morphologies concerning their chemical structure. The influence of the number of flexible segments in the copolymers on the phase transition temperatures, thermal properties, as well as the thermo-oxidative and thermal stability was analyzed. TGA analysis, along with tensile tests (static and cyclic), confirmed the utilitarian performance of the synthesized bio-based materials. It was found that an increase in the amount of pTHF caused the increase of both number-average and weight-average molecular weights and intrinsic viscosities, and at the same time causing the shift of the values of phase transition temperatures toward lower ones. Besides, PHF-b-F-pTHF containing 75 wt.% of F-pTHF units was proved to be a promising thermoplastic shape memory polymer (SMP) with a switching temperature of 20 °C.
", "funding": [ { "award": { "number": "CA18220", "title": { "en": "COST Action FUR4Sustain" } }, "funder": { "id": "01bstzn19", "name": "European Cooperation in Science and Technology" } } ], "publication_date": "2021-01-27", "publisher": "Zenodo", "resource_type": { "id": "publication-article", "title": { "de": "Zeitschriftenartikel", "en": "Journal article" } }, "rights": [ { "description": { "en": "The Creative Commons Attribution license allows re-distribution and re-use of a licensed work on the condition that the creator is appropriately credited." }, "icon": "cc-by-icon", "id": "cc-by-4.0", "props": { "scheme": "spdx", "url": "https://creativecommons.org/licenses/by/4.0/legalcode" }, "title": { "en": "Creative Commons Attribution 4.0 International" } } ], "subjects": [ { "subject": "FUR4Sustain" }, { "subject": "furan-based copolymers" }, { "subject": "biocopolyesters" }, { "subject": "poly(hexamethylene 2,5-furanodicarboxylate)" }, { "subject": "bio-poly(tetrahydrofuran)" }, { "subject": "melt polycondensation" }, { "subject": "phase structure" }, { "subject": "morphology" }, { "subject": "thermal properties" }, { "subject": "mechanical performance" } ], "title": "Biobased Thermoplastic Elastomers: Structure-Property Relationship of Poly(hexamethylene 2,5-furanodicarboxylate)-Block-Poly(tetrahydrofuran) Copolymers Prepared by Melt Polycondensation" }, "parent": { "access": { "owned_by": { "user": "1101747" }, "settings": { "accept_conditions_text": null, "allow_guest_requests": false, "allow_user_requests": false, "secret_link_expiration": 0 } }, "communities": { "default": "2f03dfa0-e62d-47e3-b455-d303cff171bc", "entries": [ { "access": { "member_policy": "open", "members_visibility": "public", "record_submission_policy": "open", "review_policy": "closed", "visibility": "public" }, "children": { "allow": false }, "created": "2024-04-23T14:39:00.303746+00:00", "custom_fields": {}, "deletion_status": { "is_deleted": false, "status": "P" }, "id": "2f03dfa0-e62d-47e3-b455-d303cff171bc", "links": {}, "metadata": { "curation_policy": "This Zenodo community contains documents performed within the framework of COST Action CA18220 - 'European network of FURan based chemicals and materials FOR a Sustainable development (FUR4Sustain)'.
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", "title": "European network of FURan based chemicals and materials FOR a Sustainable development | FUR4Sustain COST Action" }, "revision_id": 5, "slug": "ca18220", "updated": "2024-04-23T14:50:59.827472+00:00" } ], "ids": [ "2f03dfa0-e62d-47e3-b455-d303cff171bc" ] }, "id": "11277904", "pids": {} }, "pids": { "doi": { "identifier": "10.3390/polym13030397", "provider": "external" }, "oai": { "identifier": "oai:zenodo.org:11277905", "provider": "oai" } }, "revision_id": 8, "stats": { "all_versions": { "data_volume": 338724288.0, "downloads": 112, "unique_downloads": 106, "unique_views": 17, "views": 17 }, "this_version": { "data_volume": 338724288.0, "downloads": 112, "unique_downloads": 106, "unique_views": 17, "views": 17 } }, "status": "published", "swh": {}, "updated": "2024-07-05T17:53:47.577751+00:00", "versions": { "index": 1, "is_latest": true } }