Facile Preparation of Cellulose Aerogels with Controllable Pore Structure
Cellulose aerogels are the latest generation of aerogels and have also received extensive attention due to their renewable and biocompatible properties. Herein, cellulose aerogel was facilely prepared by using NaOH/urea solution as solvent, raising the temperature to control gelation and drying wet...
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| Format: | Article |
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MDPI AG
2023-02-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/3/613 |
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| author | Jiahao Qiu Xingzhong Guo Wei Lei Ronghua Ding Yun Zhang Hui Yang |
| author_facet | Jiahao Qiu Xingzhong Guo Wei Lei Ronghua Ding Yun Zhang Hui Yang |
| author_sort | Jiahao Qiu |
| collection | DOAJ |
| description | Cellulose aerogels are the latest generation of aerogels and have also received extensive attention due to their renewable and biocompatible properties. Herein, cellulose aerogel was facilely prepared by using NaOH/urea solution as solvent, raising the temperature to control gelation and drying wet gel sequentially. With NaOH/urea solution as solvent, the cellulose concentration has an important impact on the micromorphology of cellulose aerogels, while the aging time rarely affects the micromorphology. The appropriate solvent and drying method allow the formation of different cellulose crystalline structures. Different from the Cellulose Ⅰ crystalline structure of raw cellulose powder, the cellulose phase of as-prepared cellulose aerogels belongs to the Cellulose Ⅱ crystalline structure, and to some extent the pyrolysis temperature is also lower than that of raw cellulose powder. The resultant cellulose aerogel prepared by using NaOH/urea solution as solvent and freeze-drying has a uniform macroporous structure with a macropore size of 1~3 µm. |
| first_indexed | 2024-03-11T09:31:45Z |
| format | Article |
| id | doaj.art-c8ec9ca8d8a642c183cd412616d2f4bf |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T09:31:45Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-c8ec9ca8d8a642c183cd412616d2f4bf2023-11-16T17:37:19ZengMDPI AGNanomaterials2079-49912023-02-0113361310.3390/nano13030613Facile Preparation of Cellulose Aerogels with Controllable Pore StructureJiahao Qiu0Xingzhong Guo1Wei Lei2Ronghua Ding3Yun Zhang4Hui Yang5State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaState Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaPan Asia Microvent Tech (Jiangsu) Corporation & Zhejiang University Micro-Nano-Porous Materials United Research Development Center, Changzhou 213100, ChinaPan Asia Microvent Tech (Jiangsu) Corporation & Zhejiang University Micro-Nano-Porous Materials United Research Development Center, Changzhou 213100, ChinaPan Asia Microvent Tech (Jiangsu) Corporation & Zhejiang University Micro-Nano-Porous Materials United Research Development Center, Changzhou 213100, ChinaState Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaCellulose aerogels are the latest generation of aerogels and have also received extensive attention due to their renewable and biocompatible properties. Herein, cellulose aerogel was facilely prepared by using NaOH/urea solution as solvent, raising the temperature to control gelation and drying wet gel sequentially. With NaOH/urea solution as solvent, the cellulose concentration has an important impact on the micromorphology of cellulose aerogels, while the aging time rarely affects the micromorphology. The appropriate solvent and drying method allow the formation of different cellulose crystalline structures. Different from the Cellulose Ⅰ crystalline structure of raw cellulose powder, the cellulose phase of as-prepared cellulose aerogels belongs to the Cellulose Ⅱ crystalline structure, and to some extent the pyrolysis temperature is also lower than that of raw cellulose powder. The resultant cellulose aerogel prepared by using NaOH/urea solution as solvent and freeze-drying has a uniform macroporous structure with a macropore size of 1~3 µm.https://www.mdpi.com/2079-4991/13/3/613cellulose aerogelssol-gel methodtemperature controlmicromorphology |
| spellingShingle | Jiahao Qiu Xingzhong Guo Wei Lei Ronghua Ding Yun Zhang Hui Yang Facile Preparation of Cellulose Aerogels with Controllable Pore Structure Nanomaterials cellulose aerogels sol-gel method temperature control micromorphology |
| title | Facile Preparation of Cellulose Aerogels with Controllable Pore Structure |
| title_full | Facile Preparation of Cellulose Aerogels with Controllable Pore Structure |
| title_fullStr | Facile Preparation of Cellulose Aerogels with Controllable Pore Structure |
| title_full_unstemmed | Facile Preparation of Cellulose Aerogels with Controllable Pore Structure |
| title_short | Facile Preparation of Cellulose Aerogels with Controllable Pore Structure |
| title_sort | facile preparation of cellulose aerogels with controllable pore structure |
| topic | cellulose aerogels sol-gel method temperature control micromorphology |
| url | https://www.mdpi.com/2079-4991/13/3/613 |
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