Effect of Alkaline Treatment and Graphene Oxide Coating on Thermal and Chemical Properties of Hemp (Cannabis Sativa L.) Fibers
The constant concern about environmental issues has led to the growth of researches about eco-friendly materials. Among them, the natural lignocellulosic fibers have already presented their potential in place of petroleum-based synthetics. However, a relevant number of studies still have to deal wit...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-11-01
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| Series: | Journal of Natural Fibers |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/15440478.2022.2053265 |
| _version_ | 1797679995804450816 |
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| author | Pedro Henrique P. M. da Silveira Matheus P. Ribeiro Thuane T. Silva Andreza M. Lima Maurício F. Lemos Anthony G. B. A. M. Oliveira Lucio Fabio C. Nascimento Alaelson V. Gomes Sérgio N. Monteiro |
| author_facet | Pedro Henrique P. M. da Silveira Matheus P. Ribeiro Thuane T. Silva Andreza M. Lima Maurício F. Lemos Anthony G. B. A. M. Oliveira Lucio Fabio C. Nascimento Alaelson V. Gomes Sérgio N. Monteiro |
| author_sort | Pedro Henrique P. M. da Silveira |
| collection | DOAJ |
| description | The constant concern about environmental issues has led to the growth of researches about eco-friendly materials. Among them, the natural lignocellulosic fibers have already presented their potential in place of petroleum-based synthetics. However, a relevant number of studies still have to deal with their disadvantages, such as the weak bond on the matrices for a composite performance and limited thermal performance. Thus, the present study analyzes a combination of alkaline treatment and graphene oxide coating in hemp fibers, an NLF applied in several products but with few investigations in engineering applications. The hemp fibers were thermally characterized with thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The GO-coating was evidenced by the Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy. Changes in crystallinity were presented by X-ray diffraction (XRD). It was observed an increase of about 4% to 11% of the crystallinity after the alkaline treatment. The thermal stability rose about 13°C in the 10 wt% NaOH-treated and GO-coated fibers, and a change of about 3.5°C was detected for the glass transition temperature. The GO-coating effect was also evidenced by changes in Raman spectra and FTIR curves and was visually detected in the scanning electron microscope (SEM). |
| first_indexed | 2024-03-11T23:23:15Z |
| format | Article |
| id | doaj.art-e915d3bbc9964e149c586bb06d48fd14 |
| institution | Directory Open Access Journal |
| issn | 1544-0478 1544-046X |
| language | English |
| last_indexed | 2024-03-11T23:23:15Z |
| publishDate | 2022-11-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Natural Fibers |
| spelling | doaj.art-e915d3bbc9964e149c586bb06d48fd142023-09-20T13:25:59ZengTaylor & Francis GroupJournal of Natural Fibers1544-04781544-046X2022-11-011915121681218110.1080/15440478.2022.20532652053265Effect of Alkaline Treatment and Graphene Oxide Coating on Thermal and Chemical Properties of Hemp (Cannabis Sativa L.) FibersPedro Henrique P. M. da Silveira0Matheus P. Ribeiro1Thuane T. Silva2Andreza M. Lima3Maurício F. Lemos4Anthony G. B. A. M. Oliveira5Lucio Fabio C. Nascimento6Alaelson V. Gomes7Sérgio N. Monteiro8Military Institute of Engineering - ImeMilitary Institute of Engineering - ImeMilitary Institute of Engineering - ImeMilitary Institute of Engineering - ImeBrazilian Navy Research Institute - IPqMMilitary Institute of Engineering - ImeMilitary Institute of Engineering - ImeMilitary Institute of Engineering - ImeMilitary Institute of Engineering - ImeThe constant concern about environmental issues has led to the growth of researches about eco-friendly materials. Among them, the natural lignocellulosic fibers have already presented their potential in place of petroleum-based synthetics. However, a relevant number of studies still have to deal with their disadvantages, such as the weak bond on the matrices for a composite performance and limited thermal performance. Thus, the present study analyzes a combination of alkaline treatment and graphene oxide coating in hemp fibers, an NLF applied in several products but with few investigations in engineering applications. The hemp fibers were thermally characterized with thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The GO-coating was evidenced by the Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy. Changes in crystallinity were presented by X-ray diffraction (XRD). It was observed an increase of about 4% to 11% of the crystallinity after the alkaline treatment. The thermal stability rose about 13°C in the 10 wt% NaOH-treated and GO-coated fibers, and a change of about 3.5°C was detected for the glass transition temperature. The GO-coating effect was also evidenced by changes in Raman spectra and FTIR curves and was visually detected in the scanning electron microscope (SEM).http://dx.doi.org/10.1080/15440478.2022.2053265hemp fibersalkaline treatmentgraphene-oxidenatural lignocellulosic fiberscannabis sativa lgo coating |
| spellingShingle | Pedro Henrique P. M. da Silveira Matheus P. Ribeiro Thuane T. Silva Andreza M. Lima Maurício F. Lemos Anthony G. B. A. M. Oliveira Lucio Fabio C. Nascimento Alaelson V. Gomes Sérgio N. Monteiro Effect of Alkaline Treatment and Graphene Oxide Coating on Thermal and Chemical Properties of Hemp (Cannabis Sativa L.) Fibers Journal of Natural Fibers hemp fibers alkaline treatment graphene-oxide natural lignocellulosic fibers cannabis sativa l go coating |
| title | Effect of Alkaline Treatment and Graphene Oxide Coating on Thermal and Chemical Properties of Hemp (Cannabis Sativa L.) Fibers |
| title_full | Effect of Alkaline Treatment and Graphene Oxide Coating on Thermal and Chemical Properties of Hemp (Cannabis Sativa L.) Fibers |
| title_fullStr | Effect of Alkaline Treatment and Graphene Oxide Coating on Thermal and Chemical Properties of Hemp (Cannabis Sativa L.) Fibers |
| title_full_unstemmed | Effect of Alkaline Treatment and Graphene Oxide Coating on Thermal and Chemical Properties of Hemp (Cannabis Sativa L.) Fibers |
| title_short | Effect of Alkaline Treatment and Graphene Oxide Coating on Thermal and Chemical Properties of Hemp (Cannabis Sativa L.) Fibers |
| title_sort | effect of alkaline treatment and graphene oxide coating on thermal and chemical properties of hemp cannabis sativa l fibers |
| topic | hemp fibers alkaline treatment graphene-oxide natural lignocellulosic fibers cannabis sativa l go coating |
| url | http://dx.doi.org/10.1080/15440478.2022.2053265 |
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