POLYMER STRUCTURES BASED ON FIBERS OR FILMS FOR FUNCTIONAL APPLICATIONS

用于功能性应用的基于纤维或薄膜的聚合物结构

• 批准号: RGPIN-2015-05900
• 负责人: Ajji, Abdellah
• 金额: $ 2.55万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=590708
• 关键词: POLYMER; STRUCTURES; BASED; FIBERS; FILMS

The performance of polymer films and fibers is the result of the microstructure that is imparted to the material as a result of complex interactions between the resin and the thermo-mechanical history that it experiences during and after processing. This is particularly important in the case of semi-crystalline polymers, where the microstructure is a mix of crystallinity, orientation and morphological characteristics. Our previous program focussed on the development specific films structures for the generation of hydrophilic porous membranes and to produce functional fibrous structures with conductive properties. With the help of my most recent discovery grant, I supervised two PhD students, one finished his degree and the other one is pursuing his project. With the help from the present application, it is intended to continue the work on the development of functional porous membranes from both films and fibers structures as well as their extension to other applications such as piezoelectric and antibacterial. This will be performed using a cast film process followed by stretching and functionalization as well as the electrospinning process. Specifically, three projects will be pursued or conducted: 1) development of conductive electrospun nanostructures based on graphene and PANI for sensing applications; 2) functionalized electrospun structures for biomedical applications and 3) functionalization of PP porous membranes for enhanced separation operations in polar or bioactive media.

聚合物薄膜和纤维的性能是材料微观结构的结果，这是树脂与加工过程中和加工后经历的热机械历史之间复杂相互作用的结果。这在半结晶聚合物的情况下尤其重要，因为其微观结构是结晶度、取向和形态特征的混合体。我们之前的项目重点是开发特定的薄膜结构，用于生成亲水多孔膜，并生产具有导电性能的功能性纤维结构。在我最近的发现基金的帮助下，我指导了两个博士生，一个完成了他的学位，另一个正在进行他的项目。在目前应用的帮助下，我们打算继续从膜和纤维结构两方面开发功能性多孔膜，并将其扩展到压电和抗菌等其他应用领域。这将使用浇铸膜工艺，随后是拉伸和功能化以及静电纺丝工艺。具体而言，将进行三个项目：1)基于石墨烯和聚苯胺的导电电纺纳米结构的开发，用于传感应用；2)用于生物医学应用的功能化电纺丝结构和3)用于极性或生物活性介质中增强分离操作的PP多孔膜功能化。