Fabrication of All-Cellulose Composite from Cotton Fabric via NaOH/Urea Solvent Using Vacuum Bagging-Assisted Process
| Autor: | Nattakan Soykeabkaew, Nattaya Tawichai, Pawarit Chumpon, Uraiwan Intatha, Phattharasaya Rattanawongkun |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Fabrication Mechanical Engineering Composite number 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Solvent chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials Scientific method Urea General Materials Science Cellulose 0210 nano-technology |
| Zdroj: | Key Engineering Materials. 889:9-14 |
| ISSN: | 1662-9795 |
| DOI: | 10.4028/www.scientific.net/kem.889.9 |
| Popis: | All-cellulose composites (ACCs) become growingly attractive materials in wide range applications due to its green profile, biocompatibility, and enable recycling. In this work, the ACCs was fabricated from cotton fabric (CF) by partial dissolution via aqueous NaOH/urea solution. The alternative ACC fabrication technique using vacuum bagging in the dissolution step was introduced in this study. SEM images confirmed that a vacuum aid during CF-ACC fabrication effectively improved the consolidation of resulting composites, showing better bonding and structure integrity. The CF-ACC prepared with vacuum bagging-assisted process showed almost two-fold enhancement in tensile strength as compared to another one prepared without vacuum bagging. The effect of dissolution time (15-45 min) on structure and properties of CF-ACCs was also investigated. The CF-ACC prepared with vacuum bagging at dissolution time of 15 min showed the highest tensile strength of 35.25 ± 1.39 MPa and elongation of 21.17 ± 1.46 %. The longer dissolution time, the larger portion of the crystalline fibers dissolved and converted into the amorphous matrix phase of CF-ACCs (confirmed by XRD). With longer dissolution times, the tensile strength of the prepared composites was decreased. However, it was found that with increasing dissolution time and using vacuum bagging in the fabrication of CF-ACCs could enhance their Young’s modulus values, indicating a greater interfacial adhesion gained in these composite structures. |
| Databáze: | OpenAIRE |
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