Hydrophobic Modification of Nanocellulose via a Two-Step Silanation Method
Dodecyltrimethoxysilane (DTMOS), which is a silanation modifier, was grafted onto nanocellulose crystals (NCC) through a two-step method using KH560 (ɤ-(2,3-epoxyproxy)propytrimethoxysilane) as a linker to improve the hydrophobicity of NCC. The reaction mechanism of NCC with KH560 and DTMOS and its...
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MDPI AG
2018-09-01
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| Series: | Polymers |
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| Online Access: | http://www.mdpi.com/2073-4360/10/9/1035 |
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doaj-25b239fd84464f88ba890117f6c004932020-11-24T21:38:51ZengMDPI AGPolymers2073-43602018-09-01109103510.3390/polym10091035polym10091035Hydrophobic Modification of Nanocellulose via a Two-Step Silanation MethodWensheng Lin0Xiaoyong Hu1Xueqing You2Yingying Sun3Yueqin Wen4Wenbin Yang5Xinxiang Zhang6Yan Li7Hanxian Chen8College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaCollege of Light Industry, Textile and Food Engineering, Sichuan University, Chengdu 610065, ChinaCollege of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaDodecyltrimethoxysilane (DTMOS), which is a silanation modifier, was grafted onto nanocellulose crystals (NCC) through a two-step method using KH560 (ɤ-(2,3-epoxyproxy)propytrimethoxysilane) as a linker to improve the hydrophobicity of NCC. The reaction mechanism of NCC with KH560 and DTMOS and its surface chemical characteristics were investigated using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and HCl–acetone titration. These analyses confirmed that KH560 was grafted onto the surface of NCC through the ring-opening reaction, before DTMOS was covalently grafted onto the surface of NCC using KH560 as a linker. The grafting of NCC with DTMOS resulted in an improvement in its hydrophobicity due to an increase in its water contact angle from 0° to about 140°. In addition, the modified NCC also possessed enhanced thermal stability.http://www.mdpi.com/2073-4360/10/9/1035nanocellulosehydrophobicitydodecyltrimethoxysilanesilanationKH560 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Wensheng Lin Xiaoyong Hu Xueqing You Yingying Sun Yueqin Wen Wenbin Yang Xinxiang Zhang Yan Li Hanxian Chen |
| spellingShingle |
Wensheng Lin Xiaoyong Hu Xueqing You Yingying Sun Yueqin Wen Wenbin Yang Xinxiang Zhang Yan Li Hanxian Chen Hydrophobic Modification of Nanocellulose via a Two-Step Silanation Method Polymers nanocellulose hydrophobicity dodecyltrimethoxysilane silanation KH560 |
| author_facet |
Wensheng Lin Xiaoyong Hu Xueqing You Yingying Sun Yueqin Wen Wenbin Yang Xinxiang Zhang Yan Li Hanxian Chen |
| author_sort |
Wensheng Lin |
| title |
Hydrophobic Modification of Nanocellulose via a Two-Step Silanation Method |
| title_short |
Hydrophobic Modification of Nanocellulose via a Two-Step Silanation Method |
| title_full |
Hydrophobic Modification of Nanocellulose via a Two-Step Silanation Method |
| title_fullStr |
Hydrophobic Modification of Nanocellulose via a Two-Step Silanation Method |
| title_full_unstemmed |
Hydrophobic Modification of Nanocellulose via a Two-Step Silanation Method |
| title_sort |
hydrophobic modification of nanocellulose via a two-step silanation method |
| publisher |
MDPI AG |
| series |
Polymers |
| issn |
2073-4360 |
| publishDate |
2018-09-01 |
| description |
Dodecyltrimethoxysilane (DTMOS), which is a silanation modifier, was grafted onto nanocellulose crystals (NCC) through a two-step method using KH560 (ɤ-(2,3-epoxyproxy)propytrimethoxysilane) as a linker to improve the hydrophobicity of NCC. The reaction mechanism of NCC with KH560 and DTMOS and its surface chemical characteristics were investigated using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and HCl–acetone titration. These analyses confirmed that KH560 was grafted onto the surface of NCC through the ring-opening reaction, before DTMOS was covalently grafted onto the surface of NCC using KH560 as a linker. The grafting of NCC with DTMOS resulted in an improvement in its hydrophobicity due to an increase in its water contact angle from 0° to about 140°. In addition, the modified NCC also possessed enhanced thermal stability. |
| topic |
nanocellulose hydrophobicity dodecyltrimethoxysilane silanation KH560 |
| url |
http://www.mdpi.com/2073-4360/10/9/1035 |
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