Rubbery nanofibers by co-electrospinning of almost immiscible NBR and PCL blends
The paper presents a simple method for producing rubbery nanofibers without additional crosslinking required. Electrospinning's fast solvent evaporation is able to induce in liquid NBR/PCL pairs thermoplastic elastomeric (TPE) structure that holds stable over time without any further processing...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-01-01
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| Series: | Materials & Design |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127519306483 |
| _version_ | 1819017142571368448 |
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| author | Emanuele Maccaferri Laura Mazzocchetti Tiziana Benelli Tommaso Maria Brugo Andrea Zucchelli Loris Giorgini |
| author_facet | Emanuele Maccaferri Laura Mazzocchetti Tiziana Benelli Tommaso Maria Brugo Andrea Zucchelli Loris Giorgini |
| author_sort | Emanuele Maccaferri |
| collection | DOAJ |
| description | The paper presents a simple method for producing rubbery nanofibers without additional crosslinking required. Electrospinning's fast solvent evaporation is able to induce in liquid NBR/PCL pairs thermoplastic elastomeric (TPE) structure that holds stable over time without any further processing. The slight relative solubility of the polymers pair promotes a homogeneous blend formation with low Tg regions of blended NBR/PCL, avoiding phase separation. Such nanofibers show also a PCL-like crystal phase that is surprisingly higher than plain PCL nanofibrous counterpart and seemingly promoted by NBR/PCL interaction at molecular scale. The obtained nanofibrous-TPE morphology is reproducible, stable with time up to at least two years and is detected in a wide range of blend compositions (up to 80%wt NBR). Such a morphology reflects in good mechanical properties, which are analysed with a fitting model taking into account nanofibrous structure. Its impressive fitting ability helps interpretation of tensile tests behavior, carried out via normalization of force data with respect to sample mass, highlighting the contribution of liquid rubber in improving both elastic modulus and properties at failure. Such rubbery nanofibers represent a cost-effective powerful tool for the production of advanced self-damping composite materials with improved overall mechanical properties. Keywords: Nitrile butadiene rubber, Polycaprolactone, Electrospinning, Rubber nanofiber, Thermal properties, Tensile test |
| first_indexed | 2024-12-21T02:58:49Z |
| format | Article |
| id | doaj.art-8a5627fb4e894a15a091b800d24fcae0 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-21T02:58:49Z |
| publishDate | 2020-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-8a5627fb4e894a15a091b800d24fcae02022-12-21T19:18:15ZengElsevierMaterials & Design0264-12752020-01-01186Rubbery nanofibers by co-electrospinning of almost immiscible NBR and PCL blendsEmanuele Maccaferri0Laura Mazzocchetti1Tiziana Benelli2Tommaso Maria Brugo3Andrea Zucchelli4Loris Giorgini5Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, ItalyDepartment of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy; Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI-MAM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy; Corresponding authors at: Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI-MAM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy.Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy; Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI-MAM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, ItalyDepartment of Industrial Engineering, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy; Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI-MAM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, ItalyDepartment of Industrial Engineering, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy; Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI-MAM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy; Corresponding authors at: Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI-MAM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy.Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy; Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI-MAM, University of Bologna, Viale Risorgimento 2, 40136 Bologna, ItalyThe paper presents a simple method for producing rubbery nanofibers without additional crosslinking required. Electrospinning's fast solvent evaporation is able to induce in liquid NBR/PCL pairs thermoplastic elastomeric (TPE) structure that holds stable over time without any further processing. The slight relative solubility of the polymers pair promotes a homogeneous blend formation with low Tg regions of blended NBR/PCL, avoiding phase separation. Such nanofibers show also a PCL-like crystal phase that is surprisingly higher than plain PCL nanofibrous counterpart and seemingly promoted by NBR/PCL interaction at molecular scale. The obtained nanofibrous-TPE morphology is reproducible, stable with time up to at least two years and is detected in a wide range of blend compositions (up to 80%wt NBR). Such a morphology reflects in good mechanical properties, which are analysed with a fitting model taking into account nanofibrous structure. Its impressive fitting ability helps interpretation of tensile tests behavior, carried out via normalization of force data with respect to sample mass, highlighting the contribution of liquid rubber in improving both elastic modulus and properties at failure. Such rubbery nanofibers represent a cost-effective powerful tool for the production of advanced self-damping composite materials with improved overall mechanical properties. Keywords: Nitrile butadiene rubber, Polycaprolactone, Electrospinning, Rubber nanofiber, Thermal properties, Tensile testhttp://www.sciencedirect.com/science/article/pii/S0264127519306483 |
| spellingShingle | Emanuele Maccaferri Laura Mazzocchetti Tiziana Benelli Tommaso Maria Brugo Andrea Zucchelli Loris Giorgini Rubbery nanofibers by co-electrospinning of almost immiscible NBR and PCL blends Materials & Design |
| title | Rubbery nanofibers by co-electrospinning of almost immiscible NBR and PCL blends |
| title_full | Rubbery nanofibers by co-electrospinning of almost immiscible NBR and PCL blends |
| title_fullStr | Rubbery nanofibers by co-electrospinning of almost immiscible NBR and PCL blends |
| title_full_unstemmed | Rubbery nanofibers by co-electrospinning of almost immiscible NBR and PCL blends |
| title_short | Rubbery nanofibers by co-electrospinning of almost immiscible NBR and PCL blends |
| title_sort | rubbery nanofibers by co electrospinning of almost immiscible nbr and pcl blends |
| url | http://www.sciencedirect.com/science/article/pii/S0264127519306483 |
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