Preparation and Characterization of Nanofibrillated Cellulose from Bamboo Fiber via Ultrasonication Assisted by Repulsive Effect
Nanofibrillated celluloses (NFCs) have recently drawn much attention because of their exceptional physicochemical properties. However, the existing preparation procedures either produce low yields or severely degrade the cellulose and, moreover, are not energy efficient. The purpose of this study wa...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-01-01
|
| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2017/9850814 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849397445619875840 |
|---|---|
| author | Zhijun Hu Rui Zhai Jing Li Yan Zhang Jiang Lin |
| author_facet | Zhijun Hu Rui Zhai Jing Li Yan Zhang Jiang Lin |
| author_sort | Zhijun Hu |
| collection | DOAJ |
| description | Nanofibrillated celluloses (NFCs) have recently drawn much attention because of their exceptional physicochemical properties. However, the existing preparation procedures either produce low yields or severely degrade the cellulose and, moreover, are not energy efficient. The purpose of this study was to develop a novel process using ultrasonic homogenization to isolate fibrils from bamboo fiber (BF) with the assistance of negatively charged entities. The obtained samples were characterized by the degree of substitution (DS) of carboxymethyl, Fourier-transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), thermogravimetric analysis, and transmission electron microscopy (TEM). The results showed that an NFC yield could be obtained above 70% through this route. The enzyme hydrolysis could enhance the surface charge of the fiber, and mechanical activation facilitates an increase in the DS. The disintegrating efficiency of the cellulose fibrils significantly depended on the input power of ultrasonication and the DS. FT-IR spectra confirmed the occurrence of the carboxymethylation reaction based on the appearance of the characteristic signal for the carboxyl group. From XRD analysis, it was observed that the presence of the carboxyl groups makes the isolation more efficient attributed to the ionic repulsion between the carboxylate groups of the cellulose chains. |
| format | Article |
| id | doaj-art-aeae79fa304e4931a0c62b0d92c5c0b2 |
| institution | Kabale University |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-aeae79fa304e4931a0c62b0d92c5c0b22025-08-20T03:38:59ZengWileyInternational Journal of Polymer Science1687-94221687-94302017-01-01201710.1155/2017/98508149850814Preparation and Characterization of Nanofibrillated Cellulose from Bamboo Fiber via Ultrasonication Assisted by Repulsive EffectZhijun Hu0Rui Zhai1Jing Li2Yan Zhang3Jiang Lin4Zhejiang Province Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaZhejiang Province Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaZhejiang Province Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaZhejiang Province Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaZhejiang Province Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaNanofibrillated celluloses (NFCs) have recently drawn much attention because of their exceptional physicochemical properties. However, the existing preparation procedures either produce low yields or severely degrade the cellulose and, moreover, are not energy efficient. The purpose of this study was to develop a novel process using ultrasonic homogenization to isolate fibrils from bamboo fiber (BF) with the assistance of negatively charged entities. The obtained samples were characterized by the degree of substitution (DS) of carboxymethyl, Fourier-transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), thermogravimetric analysis, and transmission electron microscopy (TEM). The results showed that an NFC yield could be obtained above 70% through this route. The enzyme hydrolysis could enhance the surface charge of the fiber, and mechanical activation facilitates an increase in the DS. The disintegrating efficiency of the cellulose fibrils significantly depended on the input power of ultrasonication and the DS. FT-IR spectra confirmed the occurrence of the carboxymethylation reaction based on the appearance of the characteristic signal for the carboxyl group. From XRD analysis, it was observed that the presence of the carboxyl groups makes the isolation more efficient attributed to the ionic repulsion between the carboxylate groups of the cellulose chains.http://dx.doi.org/10.1155/2017/9850814 |
| spellingShingle | Zhijun Hu Rui Zhai Jing Li Yan Zhang Jiang Lin Preparation and Characterization of Nanofibrillated Cellulose from Bamboo Fiber via Ultrasonication Assisted by Repulsive Effect International Journal of Polymer Science |
| title | Preparation and Characterization of Nanofibrillated Cellulose from Bamboo Fiber via Ultrasonication Assisted by Repulsive Effect |
| title_full | Preparation and Characterization of Nanofibrillated Cellulose from Bamboo Fiber via Ultrasonication Assisted by Repulsive Effect |
| title_fullStr | Preparation and Characterization of Nanofibrillated Cellulose from Bamboo Fiber via Ultrasonication Assisted by Repulsive Effect |
| title_full_unstemmed | Preparation and Characterization of Nanofibrillated Cellulose from Bamboo Fiber via Ultrasonication Assisted by Repulsive Effect |
| title_short | Preparation and Characterization of Nanofibrillated Cellulose from Bamboo Fiber via Ultrasonication Assisted by Repulsive Effect |
| title_sort | preparation and characterization of nanofibrillated cellulose from bamboo fiber via ultrasonication assisted by repulsive effect |
| url | http://dx.doi.org/10.1155/2017/9850814 |
| work_keys_str_mv | AT zhijunhu preparationandcharacterizationofnanofibrillatedcellulosefrombamboofiberviaultrasonicationassistedbyrepulsiveeffect AT ruizhai preparationandcharacterizationofnanofibrillatedcellulosefrombamboofiberviaultrasonicationassistedbyrepulsiveeffect AT jingli preparationandcharacterizationofnanofibrillatedcellulosefrombamboofiberviaultrasonicationassistedbyrepulsiveeffect AT yanzhang preparationandcharacterizationofnanofibrillatedcellulosefrombamboofiberviaultrasonicationassistedbyrepulsiveeffect AT jianglin preparationandcharacterizationofnanofibrillatedcellulosefrombamboofiberviaultrasonicationassistedbyrepulsiveeffect |