水接触角

Abstract(#br)Polydimethylsiloxane (PDMS) film was treated with RF low-pressure plasmas (LPPs) made of mixtures of oxygen and argon for increasing surface polarity, minimizing hydrophobic recovery (i.e. retard ageing) and increasing adhesion to acrylic adhesive tape for medical use. Statistical design of experiments has been used for determining the most influencing experimental parameters of the LPP treatment of PDMS. Water contact angle values (measured 24\u003cce:hsp sp=\"0.25\"/\u003eh after treatment) and the O/C ratio obtained from XPS experiments were used as response variables.

Abstract(#br)Considerable efforts have been devoted to finding economic and simple preparation methods for polydimethylsiloxane (PDMS) superhydrophobic membrane in past decades. This study provides a simple method to electrospin PDMS membrane using poly (methyl methacrylate) (PMMA) as carrier polymer. Effects of PMMA concentration, PDMS/PMMA mass ratio and main parameters of electrospinning process (voltage and injection rate) were investigated to obtain superhydrophobic membrane with high water contact angle (WCA).

冠状病毒病2019 ( COVID-19 )在很大程度上威胁着全球公共卫生、社会稳定和经济。科学界的努力正转向这一全球危机，并应提出今后的预防措施。随着近年来高分子科学利用等离子体通过表面刻蚀、表面接枝、包复和活化等手段激活和增强聚合物表面功能的趋势，结合近年来在纳米尺度上理解聚合物-病毒相互作用的研究进展，将先进的等离子体处理技术应用于智能抗病毒领域具有广阔的前景。这一趋势文章突出了等离子体基表面工程中创建抗病毒聚合物的创新和新兴方向和途径。在介绍了聚合物等离子体加工的独特特点后，提出了可应用于具有抗病毒性能的工程聚合物的新型等离子体策略，并进行了批判性评价。分析和讨论了利用独特的等离子体效应来设计具有病毒捕获、病毒检测、病毒排斥和/或病毒失活功能的智能聚合物在生物医学应用中面临的挑战和未来的前景。