A versatile optical tensiomer allowing the investigation of static and dynamic interfacial properties in multiphase soft matter systems comprised of stimuli-responsive interfaces.

一种多功能光学张量体，允许研究由刺激响应界面组成的多相软物质系统中的静态和动态界面特性。

• 批准号: 439628-2013
• 负责人: Virgilio, Nick
• 金额: $ 10.71万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=509732
• 关键词: versatile; optical; tensiomer; allowing; investigation

The design, preparation and characterization of advanced soft multiphase materials is an intensive field of research because of their wide array of actual and potential fields of applications : high-performance composites and polymers, multiphase emulsions and foams for the cosmetic and food industries, tissue engineering scaffolds and drug delivery devices are only a few examples. All of these materials are comprised of interfaces which (i) play key roles during processing and microstructure development ; (ii) are directly linked to the material properties ; (iii) assure material functionalities. More recently, intensive research efforts have also been concentrated in the preparation of stimuli-responsive interfaces to either obtain smart materials that are sensitive to their environment, or to enhance process performances to develop greener ones, such as the ability to form and break emulsions with an external trigger. An optical tensiometer is specifically designed to measure a variety of key surface and interfacial properties : (1) surface energies, (2) interfacial tensions and (3) interfacial viscoelastic properties. The optical tensiometer we request is a versatile instrument that can perform all of these measurements in static (equilibrium) and dynamic (time dependant) modes, without or with surfactants or interfacially active nano/microparticles (adsorption measurements). It will have the unique feature of allowing the study of multiphase systems with a droplet-in-droplet injection module. The instrument will allow measurements at temperatures ranging from sub-ambient to over 400 degC - suitable for liquids and polymer melts. At least 4 research programs comprising 10 projects will directly benefit from this instrument and will expand their expertise on a variety of interfaces : (i) stimuli-responsive interfaces ; (ii) polymer interfaces modified with copolymers ; (iii) interfaces modified with surfactants, micro/nanoparticles and/or complexes of proteins and polysaccharides ; (iv) metal/solid surfaces with modified chemistries ; (v) systems with multiple interfaces that drive their self-organization. This tensiometer will contribute to the training of highly qualified scientists in the field of the science and engineering of soft matter interfaces.

先进的软多相材料的设计、制备和表征是一个密集的研究领域，因为它们具有广泛的实际和潜在的应用领域：高性能复合材料和聚合物、化妆品和食品工业的多相乳液和泡沫、组织工程支架和药物输送装置只是其中的几个例子。所有这些材料都由界面组成，这些界面(I)在加工和微结构发展过程中发挥关键作用；(Ii)与材料性能直接相关；(Iii)确保材料的功能。最近，密集的研究工作也集中在刺激响应界面的准备上，以获得对环境敏感的智能材料，或提高工艺性能以开发更绿色的材料，例如使用外部触发形成和打破乳状液的能力。光学张力计专门设计用于测量各种关键表面和界面属性：(1)表面能、(2)界面张力和(3)界面粘弹性属性。我们要求的光学张力计是一种多功能仪器，可以在静态(平衡)和动态(时间依赖)模式下执行所有这些测量，而不需要或不使用表面活性剂或界面活性纳米/微米颗粒(吸附测量)。它将具有独特的特点，允许研究具有液滴中液滴注入模块的多相系统。该仪器将允许在亚环境温度到400摄氏度以上的温度范围内进行测量-适用于液体和聚合物熔体。包括10个项目的至少4个研究项目将直接受益于该仪器，并将扩展他们在各种界面上的专业知识：(I)刺激响应界面；(Ii)用共聚物修饰的聚合物界面；(Iii)用表面活性剂、微/纳米颗粒和/或蛋白质和多糖的络合物修饰的界面；(Iv)具有修饰化学成分的金属/固体表面；(V)具有多个界面的系统，以驱动其自组织。该张力计将有助于培养软物质界面科学和工程领域的高素质科学家。