Structural and thermal characterization of different types of cellulosic fibers
Micro- and nanocrystalline cellulose were extracted from wheat stalk (WS) using different thermomechanical and chemical treatments and characterized by spectroscopic, microscopic and diffraction techniques. The virgin WS fibers were found to be structurally quite similar to the commercial microcrys...
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| Format: | Article |
| Language: | English |
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Department of Physics, Mahendra Morang Adarsh Multiple Campus, Tribhuvan University
2018-11-01
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| Series: | Bibechana |
| Subjects: | |
| Online Access: | https://www.nepjol.info/index.php/BIBECHANA/article/view/21650 |
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| author | Jyoti Giri Ralf Lach Janak Sapkota Md. Abu Bin Hasan Susan Jean-Marc Saiter Sven Henning Vimal Katiyar Rameshwar Adhikari |
| author_facet | Jyoti Giri Ralf Lach Janak Sapkota Md. Abu Bin Hasan Susan Jean-Marc Saiter Sven Henning Vimal Katiyar Rameshwar Adhikari |
| author_sort | Jyoti Giri |
| collection | DOAJ |
| description |
Micro- and nanocrystalline cellulose were extracted from wheat stalk (WS) using different thermomechanical and chemical treatments and characterized by spectroscopic, microscopic and diffraction techniques. The virgin WS fibers were found to be structurally quite similar to the commercial microcrystalline cellulose (MCC). Similar to the commercial one, the MCC extracted from the WS possessed intense infrared (IR) peaks whereas those peaks became more broader in the nanocrystalline cellulose (NCC) of the same origin, which can be attributed to possible breakdown of inter- and intramolecular H-bonding due to strong acid treatment of the MCC. Microscopic results revealed characteristic textures of the MCC and the NCC, the MCC being irregular bundles of the primary crystals bound together with the amorphous phase. The latter was found to disintegrate upon acid hydrolysis giving rise to the rod-shaped nanocrystals having much larger surface area and thus possessing more intense hydrophilic character. The MCC was found to be more stable than the NCC which can be attributed to the presence of protective and binding coating provided by the amorphous cellulosic matter.
BIBECHANA 16 (2019) 177-186
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| first_indexed | 2024-04-10T05:26:42Z |
| format | Article |
| id | doaj.art-3806571c7fa84e7cb6516a14bbe2e8a8 |
| institution | Directory Open Access Journal |
| issn | 2091-0762 2382-5340 |
| language | English |
| last_indexed | 2024-04-24T05:49:54Z |
| publishDate | 2018-11-01 |
| publisher | Department of Physics, Mahendra Morang Adarsh Multiple Campus, Tribhuvan University |
| record_format | Article |
| series | Bibechana |
| spelling | doaj.art-3806571c7fa84e7cb6516a14bbe2e8a82024-04-23T13:05:16ZengDepartment of Physics, Mahendra Morang Adarsh Multiple Campus, Tribhuvan UniversityBibechana2091-07622382-53402018-11-011610.3126/bibechana.v16i0.2165019326Structural and thermal characterization of different types of cellulosic fibersJyoti Giri0Ralf Lach1Janak Sapkota2Md. Abu Bin Hasan Susan3Jean-Marc Saiter4Sven Henning5Vimal Katiyar6Rameshwar Adhikari7Central Department of Chemistry, Tribhuvan University, KathmanduPolymer Service GmbH Merseburg (PSM), Merseburg,Institute of Polymer Processing, Department of Polymer Engineering and Science, Montanuniversitaet Leoben, Otto-Glockel-Strasse 2, 800 LeobenDepartment of Chemistry, Dhaka University, DhakaUniversité de Normandie Rouen Laboratoire SMS Faculté des Sciences and Onyx Developpment, Groupe-Nutriset, RouenFraunhofer Institute for Microstructure of Materials and Systems (IMWS), Halle/S,Department of Chemical Engineering, Indian Institute of Technology (IIT), Guwahati,Research Centre of Applied Science and Technology (RECAST), Tribhuvan University,Kathmandu Micro- and nanocrystalline cellulose were extracted from wheat stalk (WS) using different thermomechanical and chemical treatments and characterized by spectroscopic, microscopic and diffraction techniques. The virgin WS fibers were found to be structurally quite similar to the commercial microcrystalline cellulose (MCC). Similar to the commercial one, the MCC extracted from the WS possessed intense infrared (IR) peaks whereas those peaks became more broader in the nanocrystalline cellulose (NCC) of the same origin, which can be attributed to possible breakdown of inter- and intramolecular H-bonding due to strong acid treatment of the MCC. Microscopic results revealed characteristic textures of the MCC and the NCC, the MCC being irregular bundles of the primary crystals bound together with the amorphous phase. The latter was found to disintegrate upon acid hydrolysis giving rise to the rod-shaped nanocrystals having much larger surface area and thus possessing more intense hydrophilic character. The MCC was found to be more stable than the NCC which can be attributed to the presence of protective and binding coating provided by the amorphous cellulosic matter. BIBECHANA 16 (2019) 177-186 https://www.nepjol.info/index.php/BIBECHANA/article/view/21650Natural fibersMorphologyElectron microscopyFTIR spectroscopyCellulose |
| spellingShingle | Jyoti Giri Ralf Lach Janak Sapkota Md. Abu Bin Hasan Susan Jean-Marc Saiter Sven Henning Vimal Katiyar Rameshwar Adhikari Structural and thermal characterization of different types of cellulosic fibers Bibechana Natural fibers Morphology Electron microscopy FTIR spectroscopy Cellulose |
| title | Structural and thermal characterization of different types of cellulosic fibers |
| title_full | Structural and thermal characterization of different types of cellulosic fibers |
| title_fullStr | Structural and thermal characterization of different types of cellulosic fibers |
| title_full_unstemmed | Structural and thermal characterization of different types of cellulosic fibers |
| title_short | Structural and thermal characterization of different types of cellulosic fibers |
| title_sort | structural and thermal characterization of different types of cellulosic fibers |
| topic | Natural fibers Morphology Electron microscopy FTIR spectroscopy Cellulose |
| url | https://www.nepjol.info/index.php/BIBECHANA/article/view/21650 |
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