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| Preparation of Nanocrystalline Cellulose Grafted with Fluorine-containing Monomer as Surface Sizing Agent |
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| DOI：10.11981/j.issn.1000-6842.2014.02.18 |
| Key Words:nanocrystalline cellulose (NCC)； hexafluorobutyl methacrylate； emulsion grafting polymerization； surface sizing agent |
| Fund Project:863项目（2010GXNSFE013006）；广西科技项目（桂科攻11107021-4-5）；南宁技术创新计划项目（项目编号2011-1-09）；广西研究生教育创新计划项目（T32754）。 |
| Author Name | Affiliation | | 季剑锋 | 广西大学轻工与食品工程学院，广西南宁，530004 | | 朱红祥* | 广西大学轻工与食品工程学院，广西南宁，530004 | | 李泽龙 | 广西大学轻工与食品工程学院，广西南宁，530004 | | 杨富杰 | 广西大学轻工与食品工程学院，广西南宁，530004 | | 刘 晨 | 广西大学轻工与食品工程学院，广西南宁，530004 | | 刘 盛 | 广西大学轻工与食品工程学院，广西南宁，530004 |
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| Abstract: |
| A new surface sizing agent was prepared from nanocrystalline cellulose framework grafting with fluorine-containing monomer through emulsion grafting polymerization. Its application in surface sizing was researched. The effect of several factors， i.e.， the dosage of emulsifying agent and the mass ratio of monomer to NCC on the grafted ratio， grafting efficiency and conversion rate of monomer were studied. The grafted ratio， grafting efficiency and conversion rate of monomer could respectively reach 125.2%， 27.7% and 90.1% under optimum conditions. The changes of NCC functional groups were analyzed through Fourier transform infrared. Zetasizer Nano was used to analyze the changes of size and Zeta electric potential of modified NCC and unmodified NCC， the results revealed that modified NCC in the emulsion system had good stability. The contact angle of the paper coated with this surface sizing agent could reach 120°， and the tensile strength was 22.0 N·m/g， increasing by 26.4% compared to the paper coated with unmodified NCC. |
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