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纤维素疏水改性及其在稳定油包油Pickering乳液中的应用 被引量:2
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作者 阮绍卫 张美云 +3 位作者 谭蕉君 答梦雪 李芳芳 陈瑛奇 《陕西科技大学学报》 北大核心 2021年第6期6-13,共8页
油包油乳液不仅具有传统水油乳液传质传热方便、聚合效率高的优点,同时其无水条件为水敏感单体、催化剂的反应提供理想场所,在异氰酸酯、酰氯、茂金属催化烯烃聚合领域具有广阔的应用前景.但现阶段油包油乳液的稳定剂不仅种类匮乏,且制... 油包油乳液不仅具有传统水油乳液传质传热方便、聚合效率高的优点,同时其无水条件为水敏感单体、催化剂的反应提供理想场所,在异氰酸酯、酰氯、茂金属催化烯烃聚合领域具有广阔的应用前景.但现阶段油包油乳液的稳定剂不仅种类匮乏,且制备流程复杂,严重制约了该领域的发展.本研究以生物质材料纤维素颗粒作为反应物,采用异氰酸酯偶联法在纤维素颗粒表面通过氨基甲酸酯键接枝长烷基链,实现对纤维素表面润湿性的调控,同时引入极性和非极性链段,并进一步利用烷基链功能化纤维素稳定油包油乳液.研究结果表明,异氰酸酯偶联法成功地在纤维素表面接枝烷基链,纤维素极性的亲水表面变为疏水表面(WCA=142.8°),且功能化纤维素对十二烷包DMF型油包油乳液有很好的稳定作用.最后,在十二烷包DMF乳液中利用异氰酸酯与硫醇反应成功制备了聚硫氨酯微球.本研究的开展为油包油乳液提供一种新型、工艺过程简单、制备方法高效的稳定剂,在一定程度上推动油包油乳液的发展. 展开更多
关键词 纤维素 油包油乳液 异氰酸酯偶联法 疏水功能化
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A general, rapid and solvent-free approach to fabricating nanostructured polymer surfaces 被引量:1
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作者 TIAN Wei HUANG Long Biao +1 位作者 WANG Da Wei Roy V. A. L. 《Science China(Technological Sciences)》 SCIE EI CAS 2014年第12期2328-2334,共7页
A general, rapid and solvent-free approach is proposed to fabricate nanostructured polymer surfaces by coupling ultrasonic vi- bration and anodized aluminum oxide templating. With our approach, hollow nanorods or nano... A general, rapid and solvent-free approach is proposed to fabricate nanostructured polymer surfaces by coupling ultrasonic vi- bration and anodized aluminum oxide templating. With our approach, hollow nanorods or nanofibers with controlled diameter and length are prepared on polymer surfaces. The whole fabrication process is completed in ~30 s and equally applicable to polymers of different crystalline structures. The wettability of the as-fabricated polymer surfaces (being hydrophilic, hydro- phobic, highly hydrophobic or even superhydrophobic) is readily regulated by adjusting the welding time from 0 s to a maxi- mum of 10 s. Our approach can be a promising industrial basis for manufacturing functional nanomaterials in the fields of electronics, optics, sensors, biology, medicine, coating, or fluidic technologies. 展开更多
关键词 NANOMATERIALS nanostructured polymer surfaces ultrasonic vibration anodized aluminum oxide template WETTABILITY
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