Nanoparticle interactions with swollen polymer networks

纳米粒子与膨胀聚合物网络的相互作用

基本信息

批准号：
RGPIN-2019-04490
负责人：
Hill, Reghan
金额：
$ 2.04万
依托单位：
McGill University
依托单位国家：
加拿大
项目类别：
Discovery Grants Program - Individual
财政年份：
2019
资助国家：
加拿大
起止时间：
2019-01-01 至 2020-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=682617
关键词：
Nanoparticle interactions swollen polymer networks

项目摘要

Hydrogels are soft polymer networks that take on striking amounts of water, making them highly porous to moleculessimilarly to liquid waterbut with solid-like mechanical properties. They are used in a vast and ever increasing range of domestic and industrial applications, including food, cosmetics, medicine, agriculture, and enhanced oil recovery. While hydrogel properties are often tailored to specific applications via polymer chemistry, another approach is to modify the microstructure using nanoparticles, thus forming “hydrogel-nanocomposites”. The motivation may be to reduce costs, particularly for large-scale industrial applications, or to achieve very specific properties for niche applications. However, nanoparticle doping brings with it a plethora of new practical and fundamental scientific challenges. These arise from the complicated and poorly understood manner in which nanoparticles interact with crosslinked polymer networks. The proposed research seeks to address several fundamental scientific challengesusing theoretical, computational, and experimental methodologiesthat also address important industrial and societal questions arising from nanoparticle use in hydrogel technologies. The research will be structured in synthesis, characterization and performance themes by integrating (i) experimental model systems, (ii) novel applications of elactroacoustic, dielectric and rheological spectroscopy, (iii) particle-scale simulations, and (iv) continuum-scale theory. The program will support Canada's advanced materials, bio-technology, and agriculture sectors, provide scientific input on nanoparticle release and safety, and train young engineers for industrial and academic leadership.

水凝胶是醒目的水量的聚合物网络，它们的家用和工业应用范围很大，倾向的食物，化妆品，药物，农业和增强的油凝胶。对于通过聚合物化学的特定应用，她的方法是使用纳米颗粒的微观结构，因此形成“水凝胶 - 纳米复合材料”。这些。源于与交联的聚合物网络的复杂且较差的曼尼帕蒂（Mannpartirs），拟议的研究旨在解决有障碍的理论，并且实验性Iesthat也解决了工业和社会套管，以解决其纳米粒子在水凝技术中的使用。通过（i）实验模型系统，（ii）大声音，介电和流变学特殊光谱，（iii）的新型应用，以及（iv）连续级别的理论。农业领域，提供有关纳米颗粒释放和安全性的科学意见，以及培训工业和学术领导力的工程师。