A New Strategy to Produce Hemp Fibers through a Waterglass-Based Ecofriendly Process
Natural fibers such as kenaf, hemp, flax, jute, and sisal have become the subject of much research as potential green or eco-friendly reinforcement composites, since they assure the reduction of weight, cost, and CO release with less reliance on oil sources. Herein, an inexpensive and eco-friendly w...
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| Veröffentlicht in: | Materials 2020-04, Vol.13 (8), p.1844 |
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| creator | Bifulco, Aurelio Silvestri, Brigida Passaro, Jessica Boccarusso, Luca Roviello, Valentina Branda, Francesco Durante, Massimo |
| description | Natural fibers such as kenaf, hemp, flax, jute, and sisal have become the subject of much research as potential green or eco-friendly reinforcement composites, since they assure the reduction of weight, cost, and CO
release with less reliance on oil sources. Herein, an inexpensive and eco-friendly waterglass treatment is proposed, allowing the production of silica-coated fibers that can be easily obtained in micro/nano fibrils through a low power mixer. The silica coating has been exploited to improve the chemical compatibility between fibers and the polymer matrix through the reaction of silanol groups with suitable coupling agents. In particular, silica-coated fibers easily functionalized with (3-Aminopropyl) triethoxysilane (APTS) were used as a filler in the manufacturing of epoxy-based composites. Morphological investigation of the composites through Scanning Electron Microscopy (SEM) demonstrated that the filler has a tendency to produce a web-like structure, formed by continuously interconnected fibrils and microfibrils, from which particularly effective mechanical properties may be obtained. Dynamic Mechanical Analysis (DMA) shows that the functionalized fibers, in a concentration of 5 wt%, strongly affect the glass transformation temperature (10 °C increase) and the storage modulus of the pristine resin. Taking into account the large number of organosilicon compounds (in particular the alkoxide ones) available on the market, the new process appears to pave the way for the cleaner and cheaper production of biocomposites with different polymeric matrices and well-tailored interfaces. |
| doi_str_mv | 10.3390/MA13081844 |
| format | Article |
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release with less reliance on oil sources. Herein, an inexpensive and eco-friendly waterglass treatment is proposed, allowing the production of silica-coated fibers that can be easily obtained in micro/nano fibrils through a low power mixer. The silica coating has been exploited to improve the chemical compatibility between fibers and the polymer matrix through the reaction of silanol groups with suitable coupling agents. In particular, silica-coated fibers easily functionalized with (3-Aminopropyl) triethoxysilane (APTS) were used as a filler in the manufacturing of epoxy-based composites. Morphological investigation of the composites through Scanning Electron Microscopy (SEM) demonstrated that the filler has a tendency to produce a web-like structure, formed by continuously interconnected fibrils and microfibrils, from which particularly effective mechanical properties may be obtained. Dynamic Mechanical Analysis (DMA) shows that the functionalized fibers, in a concentration of 5 wt%, strongly affect the glass transformation temperature (10 °C increase) and the storage modulus of the pristine resin. Taking into account the large number of organosilicon compounds (in particular the alkoxide ones) available on the market, the new process appears to pave the way for the cleaner and cheaper production of biocomposites with different polymeric matrices and well-tailored interfaces.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/MA13081844</identifier><identifier>PMID: 32295251</identifier><language>eng</language><publisher>Switzerland: MDPI AG</publisher><subject>Biomedical materials ; Bisphenol A ; Cellulose ; Chemical compatibility ; Coated fibers ; Composite materials ; Coupling agents ; Dynamic mechanical analysis ; Energy consumption ; Epoxy resins ; Flax ; Hemp ; Hydrochloric acid ; Jute ; Kenaf ; Mechanical properties ; NMR ; Nuclear magnetic resonance ; Organosilicon compounds ; Polyamines ; Scanning electron microscopy ; Silicon dioxide ; Sisal ; Spectrum analysis ; Storage modulus ; Transformation temperature ; Weight reduction</subject><ispartof>Materials, 2020-04, Vol.13 (8), p.1844</ispartof><rights>2020. This work is licensed under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2020 by the authors. 2020</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c406t-33001ed787567830ff83d0c32a2f57e4f3d2c3c3873ba36125a46d5f90f73e4f3</citedby><cites>FETCH-LOGICAL-c406t-33001ed787567830ff83d0c32a2f57e4f3d2c3c3873ba36125a46d5f90f73e4f3</cites><orcidid>0000-0002-3496-5869 ; 0000-0003-1654-8698 ; 0000-0002-4214-5385 ; 0000-0002-6588-2580 ; 0000-0003-3216-9081</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7216106/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7216106/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,27924,27925,53791,53793</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/32295251$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Bifulco, Aurelio</creatorcontrib><creatorcontrib>Silvestri, Brigida</creatorcontrib><creatorcontrib>Passaro, Jessica</creatorcontrib><creatorcontrib>Boccarusso, Luca</creatorcontrib><creatorcontrib>Roviello, Valentina</creatorcontrib><creatorcontrib>Branda, Francesco</creatorcontrib><creatorcontrib>Durante, Massimo</creatorcontrib><title>A New Strategy to Produce Hemp Fibers through a Waterglass-Based Ecofriendly Process</title><title>Materials</title><addtitle>Materials (Basel)</addtitle><description>Natural fibers such as kenaf, hemp, flax, jute, and sisal have become the subject of much research as potential green or eco-friendly reinforcement composites, since they assure the reduction of weight, cost, and CO
release with less reliance on oil sources. Herein, an inexpensive and eco-friendly waterglass treatment is proposed, allowing the production of silica-coated fibers that can be easily obtained in micro/nano fibrils through a low power mixer. The silica coating has been exploited to improve the chemical compatibility between fibers and the polymer matrix through the reaction of silanol groups with suitable coupling agents. In particular, silica-coated fibers easily functionalized with (3-Aminopropyl) triethoxysilane (APTS) were used as a filler in the manufacturing of epoxy-based composites. Morphological investigation of the composites through Scanning Electron Microscopy (SEM) demonstrated that the filler has a tendency to produce a web-like structure, formed by continuously interconnected fibrils and microfibrils, from which particularly effective mechanical properties may be obtained. Dynamic Mechanical Analysis (DMA) shows that the functionalized fibers, in a concentration of 5 wt%, strongly affect the glass transformation temperature (10 °C increase) and the storage modulus of the pristine resin. Taking into account the large number of organosilicon compounds (in particular the alkoxide ones) available on the market, the new process appears to pave the way for the cleaner and cheaper production of biocomposites with different polymeric matrices and well-tailored interfaces.</description><subject>Biomedical materials</subject><subject>Bisphenol A</subject><subject>Cellulose</subject><subject>Chemical compatibility</subject><subject>Coated fibers</subject><subject>Composite materials</subject><subject>Coupling agents</subject><subject>Dynamic mechanical analysis</subject><subject>Energy consumption</subject><subject>Epoxy resins</subject><subject>Flax</subject><subject>Hemp</subject><subject>Hydrochloric acid</subject><subject>Jute</subject><subject>Kenaf</subject><subject>Mechanical properties</subject><subject>NMR</subject><subject>Nuclear magnetic resonance</subject><subject>Organosilicon compounds</subject><subject>Polyamines</subject><subject>Scanning electron microscopy</subject><subject>Silicon dioxide</subject><subject>Sisal</subject><subject>Spectrum analysis</subject><subject>Storage modulus</subject><subject>Transformation temperature</subject><subject>Weight reduction</subject><issn>1996-1944</issn><issn>1996-1944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpdkVtLxDAQhYMoKuqLP0ACvohQTTJt2r4I6-INvIGKjyGbTnYrbbMmrbL_3ixeUCcPE5gvhzM5hOxydgRQsuObEQdW8CJNV8gmL0uZ8DJNV3_dN8hOCC8sFgAvRLlONkCIMhMZ3ySPI3qL7_Sh97rH6YL2jt57Vw0G6SW2c3peT9AH2s-8G6Yzqulz5Py00SEkpzpgRc-Ms77GrmoWy6cGQ9gma1Y3AXe--hZ5Oj97HF8m13cXV-PRdWJSJvsEgDGOVV7kmcwLYNYWUDEDQgub5ZhaqIQBA0UOEw2Si0ynsspsyWwOy_EWOfnUnQ-TFiuDXVyjUXNft9ovlNO1-jvp6pmaujeVCy45k1Hg4EvAu9cBQ6_aOhhsGt2hG4IS8YdlBlnKIrr_D31xg-_iekuKS1HEE6nDT8p4F4JH-2OGM7XMS7X6O68I7_22_4N-pwMfF5SOsg</recordid><startdate>20200414</startdate><enddate>20200414</enddate><creator>Bifulco, Aurelio</creator><creator>Silvestri, Brigida</creator><creator>Passaro, Jessica</creator><creator>Boccarusso, Luca</creator><creator>Roviello, Valentina</creator><creator>Branda, Francesco</creator><creator>Durante, Massimo</creator><general>MDPI AG</general><general>MDPI</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0002-3496-5869</orcidid><orcidid>https://orcid.org/0000-0003-1654-8698</orcidid><orcidid>https://orcid.org/0000-0002-4214-5385</orcidid><orcidid>https://orcid.org/0000-0002-6588-2580</orcidid><orcidid>https://orcid.org/0000-0003-3216-9081</orcidid></search><sort><creationdate>20200414</creationdate><title>A New Strategy to Produce Hemp Fibers through a Waterglass-Based Ecofriendly Process</title><author>Bifulco, Aurelio ; 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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central Open Access; MDPI - Multidisciplinary Digital Publishing Institute; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Biomedical materials Bisphenol A Cellulose Chemical compatibility Coated fibers Composite materials Coupling agents Dynamic mechanical analysis Energy consumption Epoxy resins Flax Hemp Hydrochloric acid Jute Kenaf Mechanical properties NMR Nuclear magnetic resonance Organosilicon compounds Polyamines Scanning electron microscopy Silicon dioxide Sisal Spectrum analysis Storage modulus Transformation temperature Weight reduction |
| title | A New Strategy to Produce Hemp Fibers through a Waterglass-Based Ecofriendly Process |
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