将壳聚糖进行酯化,再使用戊二醛(GA)将壳聚糖互相交联,得到醋酸酯壳聚糖(ACS)气凝胶,最后使用化学气相沉积(CVD)法对ACS气凝胶进行疏水改性。结果表明:结合红外光谱与X射线衍射图,壳聚糖表面接枝了饱和脂肪酸C=O键,甲基三甲氧基硅烷接枝到醋酸酯壳聚糖气凝胶表面。当GA质量含量为1.25%时,ACS气凝胶孔隙率达到最大值,对油吸附量为51.5g/g。当CVD反应温度为120℃时,ACS气凝胶的接触角达到了120°。当壳聚糖质量含量为1.5%时,形变量为5%时,ACS气凝胶的最大应力达到9.6kPa。
Chitosan was esterified and then cross-linked with glutaraldehyde (GA) to obtain chitosan acetate (ACS) aerogels,and then the ACS aerogels were modified by hydrophobization by chemical vapor deposition (CVD).The results showed that the surface chitosan was successfully grafted with the saturated fatty acid C=O bond based on infrared spectroscopy and X-ray diffraction patterns,and trimethoxymethylsilane successfully grafted to the surface of chitosan acetate aerogels.When the content of GA was 1.25wt.%,the porosity ACS aerogels reached the maximum value,and the oil adsorption capacity was 51.5g/g.When the CVD reaction temperature was 120℃,the contact angle of ACS aerogels reached 120 °.When the content of chitosan was 1.5wt.%,the stress of ACS aerogels reached 9.6kPa at a strain of 5%.
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基金资助
国家自然科学基金(951962029);内蒙古自治区科技计划项目(2019GG265);内蒙古农业大学高层次人才启动项目(NDGCC2016-20);内蒙古自治区高等学校“青年科技英才支持计划”项目(NJYT-19-A08);内蒙古自治区重大专项项目(2020ZD0024);内蒙古自然科学基金——杰出青年科学基金项目(2022JQ08)
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