Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: Composition impact on the properties
Thermoplastic poly(urethane-siloxane)/organoclay nanocomposites (TPU NCs) with different hard segment content (20–55 wt. %) were prepared by in situ polymerization in the presence of organically modified montmorillonite as a nanofiller (Cloisite 30B; 1 wt. %). Hydroxyl-terminated ethoxypropyl- poly(...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2022-01-01
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| Series: | Journal of the Serbian Chemical Society |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2022/0352-51392200036P.pdf |
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| author | Pergal Marija V. Ostojić Sanja Steinhart Miloš Stefanović Ivan S. Pezo Lato Špírková Milena |
| author_facet | Pergal Marija V. Ostojić Sanja Steinhart Miloš Stefanović Ivan S. Pezo Lato Špírková Milena |
| author_sort | Pergal Marija V. |
| collection | DOAJ |
| description | Thermoplastic poly(urethane-siloxane)/organoclay nanocomposites (TPU NCs) with different hard segment content (20–55 wt. %) were prepared by in situ polymerization in the presence of organically modified montmorillonite as a nanofiller (Cloisite 30B; 1 wt. %). Hydroxyl-terminated ethoxypropyl- poly(dimethylsiloxane) was used as soft segment, while 4,4'-methylenediphenyl diisocyanate and 1,4-butanediol were the hard segment components. The study of the influence of the hard segment content on the functional properties of TPU NCs was performed by Fourier transform infrared (FTIR) spectroscopy, X-ray diffractometry (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM), dynamic mechanical thermal analyses (DMTA), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), water contact angle and water absorption tests. The results revealed that TPU NCs with the increasing hard segment content exhibit higher values of degree of microphase separation, melting temperature of the hard segments, degree of crystallinity, storage modulus (except for TPU NC-55), but lower thermal stability and hydrophobicity. TPU NC films were hydrophobic and their free surface energy was in the range from 17.7 to 24.9 mJ m-2. This work highlights how the composition of TPU NCs would affect their functional properties and provide an additional composition intended for designing advanced TPU NC materials for special biomedical applications. |
| first_indexed | 2024-04-12T03:31:47Z |
| format | Article |
| id | doaj.art-fcfac57a3e2343dfa9183733f1baa3f3 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 1820-7421 |
| language | English |
| last_indexed | 2024-04-12T03:31:47Z |
| publishDate | 2022-01-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-fcfac57a3e2343dfa9183733f1baa3f32022-12-22T03:49:32ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51391820-74212022-01-0187101203121810.2298/JSC220223036P0352-51392200036PNanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: Composition impact on the propertiesPergal Marija V.0https://orcid.org/0000-0001-6078-2006Ostojić Sanja1https://orcid.org/0000-0002-9853-1189Steinhart Miloš2Stefanović Ivan S.3https://orcid.org/0000-0002-2679-0341Pezo Lato4https://orcid.org/0000-0002-0704-3084Špírková Milena5University of Belgrade, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, Belgrade, SerbiaInstitute of General and Physical Chemistry, University of Belgrade, Belgrade, SerbiaInstitute of Macromolecular Chemistry CAS (IMC), Prague, Czech RepublicUniversity of Belgrade, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, Belgrade, SerbiaInstitute of General and Physical Chemistry, University of Belgrade, Belgrade, SerbiaInstitute of Macromolecular Chemistry CAS (IMC), Prague, Czech RepublicThermoplastic poly(urethane-siloxane)/organoclay nanocomposites (TPU NCs) with different hard segment content (20–55 wt. %) were prepared by in situ polymerization in the presence of organically modified montmorillonite as a nanofiller (Cloisite 30B; 1 wt. %). Hydroxyl-terminated ethoxypropyl- poly(dimethylsiloxane) was used as soft segment, while 4,4'-methylenediphenyl diisocyanate and 1,4-butanediol were the hard segment components. The study of the influence of the hard segment content on the functional properties of TPU NCs was performed by Fourier transform infrared (FTIR) spectroscopy, X-ray diffractometry (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM), dynamic mechanical thermal analyses (DMTA), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), water contact angle and water absorption tests. The results revealed that TPU NCs with the increasing hard segment content exhibit higher values of degree of microphase separation, melting temperature of the hard segments, degree of crystallinity, storage modulus (except for TPU NC-55), but lower thermal stability and hydrophobicity. TPU NC films were hydrophobic and their free surface energy was in the range from 17.7 to 24.9 mJ m-2. This work highlights how the composition of TPU NCs would affect their functional properties and provide an additional composition intended for designing advanced TPU NC materials for special biomedical applications.http://www.doiserbia.nb.rs/img/doi/0352-5139/2022/0352-51392200036P.pdfpolyurethaneclay nanofillercomposition-dependent propertiesdegree of microphase separationsurface propertiesthermal performance |
| spellingShingle | Pergal Marija V. Ostojić Sanja Steinhart Miloš Stefanović Ivan S. Pezo Lato Špírková Milena Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: Composition impact on the properties Journal of the Serbian Chemical Society polyurethane clay nanofiller composition-dependent properties degree of microphase separation surface properties thermal performance |
| title | Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: Composition impact on the properties |
| title_full | Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: Composition impact on the properties |
| title_fullStr | Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: Composition impact on the properties |
| title_full_unstemmed | Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: Composition impact on the properties |
| title_short | Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: Composition impact on the properties |
| title_sort | nanocomposites made from thermoplastic linear poly urethane siloxane and organoclay composition impact on the properties |
| topic | polyurethane clay nanofiller composition-dependent properties degree of microphase separation surface properties thermal performance |
| url | http://www.doiserbia.nb.rs/img/doi/0352-5139/2022/0352-51392200036P.pdf |
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