| 季剑锋,朱红祥,李泽龙,杨富杰,刘 晨,刘 盛.纳米微晶纤维素接枝含氟单体制备表面施胶剂的研究[J].中国造纸学报,2014,29(2):18-22 |
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| 纳米微晶纤维素接枝含氟单体制备表面施胶剂的研究 |
| 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 |
| 中文关键词: 纳米微晶纤维素（NCC） 甲基丙烯酸六氟丁酯 乳液接枝聚合 表面施胶剂 |
| Key Words:nanocrystalline cellulose (NCC) hexafluorobutyl methacrylate emulsion grafting polymerization surface sizing agent |
| 基金项目: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）。 |
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| 中文摘要: |
| 以纳米微晶纤维素(NCC)为骨架，甲基丙烯酸六氟丁酯为单体，通过乳液接枝聚合合成新型表面施胶剂，并进行表面施胶的应用研究。考察乳化剂用量和含氟单体与NCC质量比对接枝率、接枝效率和单体转化率的影响；在较优条件下改性NCC接枝率、接枝效率、单体转化率分别为125.2%、27.7%、90.1%。通过红外光谱进行接枝前后NCC的官能团变化分析。通过纳米粒度仪分析了未改性/改性NCC的Zeta电位及粒径变化；结果表明，所得改性NCC在乳液体系中具有良好的稳定性；将其用于表面施胶，施胶处理后的纸张接触角能够达到120°，抗张指数较使用未改性NCC的纸张可提高26.4%，达到22.0 N·m/g。 |
| 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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