水解

Abstract(#br)In this paper, reactive polyvinylsilazane (PVSZ) is employed as silicate source for poly(dimethylsiloxane) (PDMS) channel surface modification. The PVSZ submicron layer is simply constructed by flushing 1\u003cce:hsp sp=\"0.25\"/\u003ewt.% PVSZ-anhydrous DMF solution into PDMS channel for 1\u003cce:hsp sp=\"0.25\"/\u003emin. After UV and thermal curing, the reactive coating is subjected to hydrolysis reaction in an alkali solution for 1\u003cce:hsp sp=\"0.25\"/\u003eh to convert the consolidated polymer surface to silicate phase.

Abstract(#br)Segmented polyurethane multiblock polymers containing polydimethylsiloxane and polyether soft segments form tough and easily processed thermoplastic elastomers (PDMS-urethanes). Two commercially available examples, PurSil 35 (denoted as P35) and Elast-Eon E2A (denoted as E2A), were evaluated for abrasion and fatigue resistance after immersion in 85 °C buffered water for up to 80 weeks.

摩擦电纳米发电机( TENG )在生物医学监测、机器人传感器、工业环境监测等领域显示了巨大的潜力。不同pH值的恶劣环境会直接影响TENG的性能。本文系统地研究了界面酸碱对接触分离模式TENG性能的影响。傅里叶变换红外光谱( FTIR )显示了酸碱对聚二甲基硅氧烷( PDMS )水解的加速作用，宏观和纳米尺度上PDMS表面的接触带电量均随H和OH -浓度的增加而增加。不同接触周期的PDMS的X射线光电子能谱( XPS )和FTIR表明，接触时主链发生了异解裂解，可产生机械自由基，并诱导电子从SiO2自然转移到PDMS的这一最低分子轨道( LUMO )。更多的解理产生的机械自由基诱导更多的电子传递，有助于接触带电随离子浓度增加的趋势。这些结果揭示了酸碱对聚合物基TENG性能的影响机理，可为聚合物基TENG以及恶劣环境下自供电智能传感器的发展提供指导。