摘要
利用Na OH/尿素体系对微晶纤维素进行溶解,得到再生纤维素溶液。通过溶胶凝胶法共混氧化铁溶液制备纤维素/氧化铁复合气凝胶。采用扫描电子显微镜(SEM)、X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)对纤维素/氧化铁复合气凝胶进行表征分析,分析结果表明氧化铁掺杂在纤维素气凝胶里,纤维素/氧化铁复合气凝胶呈现网状结构,氧化铁的添加并没有影响纤维素气凝胶的微观形貌。利用十八烷基三氯硅烷(OTS)对纤维素/氧化铁复合气凝胶进行疏水改性,接触角测试结果表明改性纤维素/氧化铁复合气凝胶均达到疏水状态。
The microcrystalline cellulose was dissolved by NaOH/urea system and regenerated cellulose solution was obtained. The cellulose/ferric oxide composite aerogel was prepared by sol-gel method blending ferric oxide solution. Cellulose/ferric oxide composite aerogel was characterized by scanning electron microscopy （SEM）, X-ray diffraction （XRD）, Fourier transform infrared spectroscopy （FT-IR）. The analysis results showed that ferric oxides were doped in cellulose aerogel, cellulose/ferric oxide composite aerogel showed network structure, and the addition of ferric oxides had no effect on the morphology of cellulose aerogel. Cellulose/ferric oxide composite aerogel was hydrophobic modified with octadecyl test showed that the modified cellulose/ferric oxide composite trichlorosilane （OTS）. The results of contact angel aerogel was hydrophobic state.
出处
《纤维素科学与技术》
CAS
CSCD
2015年第3期22-28,共7页
Journal of Cellulose Science and Technology
基金
黑龙江省自然科学基金项目(C2015055)
中央高校基本科研业务费专项资金资助项目(2572014EB01-02)
浙江省‘林业工程’重中之重一级学科开放基金重点项目(2014lygcz002)
关键词
微晶纤维素
复合气凝胶
疏水改性
microcrystalline cellulose
composite aerogel
hydrophobic modification
