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Thin-film flow technology in controlling the organization of materials and their properties Special Collection:Distinguished Australian Researchers
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作者 Clarence Chuah Xuan Luo +2 位作者 Javad Tavakoli Youhong Tang colin l.raston 《Aggregate》 EI CAS 2024年第1期115-129,共15页
Centrifugal and shear forces are produced when solids or liquids rotate.Rotary systems and devices that use these forces,such as dynamic thin-film flow technology,are evolving continuously,improve material structure-p... Centrifugal and shear forces are produced when solids or liquids rotate.Rotary systems and devices that use these forces,such as dynamic thin-film flow technology,are evolving continuously,improve material structure-property relationships at the nanoscale,representing a rapidly thriving and expanding field of research high with green chemistry metrics,consolidated at the inception of science.The vortex fluidic device(VFD)provides many advantages over conventional batch processing,with fluidic waves causing high shear and producing large surface areas for micro-mixing as well as rapid mass and heat transfer,enabling reactions beyond diffusion control.Combining these abilities allows for a green and innovative approach to altering materials for various research and industry applications by controlling small-scale flows and regulating molecular and macromolecular chemical reactivity,self-organization phenomena,and the synthesis of novel materials.This review highlights the aptitude of the VFD as clean technology,with an increase in efficiency for a diversity of top-down,bottom-up,and novel material transformations which benefit from effective vortex-based processing to control material structure-property relationships. 展开更多
关键词 material NANOSCALE structure-property relationship thin film flow technology vortex fluidic device
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涡流介导的一步法制备具有可调表面形态和增强自愈性能的聚乙烯醇水凝胶膜
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作者 Javad Tavakoli colin l.raston +1 位作者 马勇 唐友宏 《Science China Materials》 SCIE EI CSCD 2020年第7期1310-1317,共8页
控制基于聚乙烯醇(PVA)的水凝胶表面形态的传统策略包括冷冻干燥和静电纺丝,但是这些方法要求进行后处理过程,这可能会影响最终的水凝胶的质地和性能.特别是,使用这些方法几乎不可能在PVA水凝胶的形成过程中控制其表面形貌.本研究首次... 控制基于聚乙烯醇(PVA)的水凝胶表面形态的传统策略包括冷冻干燥和静电纺丝,但是这些方法要求进行后处理过程,这可能会影响最终的水凝胶的质地和性能.特别是,使用这些方法几乎不可能在PVA水凝胶的形成过程中控制其表面形貌.本研究首次报道了借助新颖的涡流装置(VFD)技术一步法制备PVA水凝胶膜.使用VFD可以很容易地制造出具有不同表面形貌的PVA水凝胶.并通过降低交联剂的浓度,获得了具有增强断裂应力(比传统制造的水凝胶大60%)的自愈水凝胶.有趣的是,在5%s-1的应变率下进行的260 s机械测试中,相关的自愈特性保持不变.VFD可以有效地调控基于PVA的水凝胶的表面形貌及其相关特性,尤其是水凝胶的自愈特性. 展开更多
关键词 静电纺丝 聚乙烯醇水凝胶 表面形态 机械测试 断裂应力 冷冻干燥 表面形貌 后处理过程
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