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化工新型材料  2018, Vol. 46 Issue (4): 230-233    
  开发与应用 本期目录 | 过刊浏览 | 高级检索 |
疏水性棉短绒纤维素/SiO2复合气凝胶的制备及性能研究
郑真, 丁成立*, 李惠萍*, 付静静
新疆大学化学化工学院,乌鲁木齐830046
Synthesis and property of hydrophobic functionalized cotton linter cellulose/SiO2 composite aerogel
Zheng Zhen, Ding Chengli, Li Huiping, Fu Jingjing
School of Chemistry and Chemical Engineering,Xingjiang University,Urumqi 830046
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摘要 以棉短绒纤维素为原料,以NaOH/尿素/H2O为绿色溶剂体系,采用溶胶-凝胶法制备纤维素水凝胶,以硅酸钠(Na2SiO3)为硅源,代替传统正硅酸乙酯(TEOS)作为溶剂,通过浸泡法制备了4种纤维素/SiO2复合气凝胶,再利用十六烷基三甲氧基硅烷(HDTMS)对纤维素/SiO2复合气凝胶进行疏水改性,采用傅里叶变换红外光谱(FT-IR)和扫描电子显微镜(SEM)等手段对产物进行表征。结果表明:疏水改性后复合气凝胶三维网状结构的孔隙变小,随着Na2SiO3用量的增加,疏水纤维素/SiO2复合气凝胶的接触角逐渐增大,达到147°,吸油量可达到自身质量的8倍,具有较好的疏水亲油性能。
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郑真
丁成立
李惠萍
付静静
关键词:  NaOH/尿素/H2O  Na2SiO3  溶胶-凝胶法  气凝胶  疏水改性    
Abstract: Cellulose hydrogel was obtained by sol-gel transition of cotton linter in a green cost-effective NaOH/urea aqueous solution.The silica source used here was Na2SiO3 instead of traditional tetraethoxysilane (TEOS) by immersing method to prepared four kinds of cellulose/SiO2 composite aerogels and hydrophobically modified with hexadecyl trimethoxy silane (HDTMS).All samples were characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM).Analysis results showed that the structure of cellulose/SiO2 composite aerogels and the modified products were all three-dimensional network,the pore became smaller after modification,four kinds of hydrophobic cellulose/SiO2 composite aerogels were gradually improved with the increase of the dose of Na2SiO3,and the biggest contact angle was 147°.The oil absorption reached 8 times of their own quality,which with good ability to adsorb oil.
Key words:  NaOH/urea/H2O    Na2SiO3    sol-gel method    aerogel    hydrophobic modification
收稿日期:  2017-08-05                出版日期:  2018-04-20      发布日期:  2018-05-17      期的出版日期:  2018-04-20
基金资助: 国家自然科学基金(21666035);新疆高层人才研究基金(XJEDU:20161019);新疆维吾尔自治区高校科研项目(BS150224)
通讯作者:  丁成立,副教授;李惠萍,副教授。   
作者简介:  郑真(1991-),女,硕士研究生,主要研究方向为化学工程与技术。
引用本文:    
郑真, 丁成立, 李惠萍, 付静静. 疏水性棉短绒纤维素/SiO2复合气凝胶的制备及性能研究[J]. 化工新型材料, 2018, 46(4): 230-233.
Zheng Zhen, Ding Chengli, Li Huiping, Fu Jingjing. Synthesis and property of hydrophobic functionalized cotton linter cellulose/SiO2 composite aerogel. New Chemical Materials, 2018, 46(4): 230-233.
链接本文:  
http://www.hgxx.org/CN/  或          http://www.hgxx.org/CN/Y2018/V46/I4/230
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