PLA Electrospun Fibers Reinforced with Organic and Inorganic Nanoparticles: A Comparative Study
| Autor: | Marcela Lieblich, Daniel López, Adrián Leonés, Marina P. Arrieta, Alicia Mujica-Garcia, Valentina Salaris, Laura Peponi, Jose Maria Kenny |
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| Přispěvatelé: | Ministerio de Economía y Competitividad (España), European Commission |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Pharmaceutical Science Nanoparticle macromolecular substances Article Silver nanoparticle Analytical Chemistry Chitosan chemistry.chemical_compound Crystallinity QD241-441 Drug Discovery Ultimate tensile strength Physical and Theoretical Chemistry electrospinning Nanocomposite Electrospinning Organic Chemistry technology industry and agriculture Inorganic nanoparticle inorganic nanoparticles chemistry Chemical engineering Chemistry (miscellaneous) Organic nanoparticles organic nanoparticles PLA Molecular Medicine Glass transition |
| Zdroj: | Molecules Molecules, Vol 26, Iss 4925, p 4925 (2021) Digital.CSIC. Repositorio Institucional del CSIC instname Volume 26 Issue 16 |
| ISSN: | 1420-3049 |
| DOI: | 10.3390/molecules26164925 |
| Popis: | In this work, different poly (lactic acid) (PLA)-based nanocomposite electrospun fibers, reinforced with both organic and inorganic nanoparticles, were obtained. As organic fibers, cellulose nanocrystals, CNC, both neat and functionalized by “grafting from” reaction, chitosan and graphene were used; meanwhile, hydroxyapatite and silver nanoparticles were used as inorganic fibers. All of the nanoparticles were added at 1 wt% with respect to the PLA matrix in order to be able to compare their effect. The main aim of this work was to study the morphological, thermal and mechanical properties of the different systems, looking for differences between the effects of the addition of organic or inorganic nanoparticles. No differences were found in either the glass transition temperature or the melting temperature between the different electrospun systems. However, systems reinforced with both neat and functionalized CNC exhibited an enhanced degree of crystallinity of the electrospun fibers, by up to 12.3%. From a mechanical point of view, both organic and inorganic nanoparticles exhibited a decreased elastic modulus and tensile strength in comparison to neat electrospun PLA fibers, improving their elongation at break. Furthermore, all of the organic and inorganic reinforced systems disintegrated under composting conditions after 35 days. The authors thank the Spanish Ministry of Economy, Industry and Competitive- ness (MINEICO) (MAT2017-88123-P, POLYMAGIC: (PCIN-2017-036) cofinanced with EU FEDER funds |
| Databáze: | OpenAIRE |
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