Development of High Performance Polymer Blends

高性能聚合物共混物的开发

• 批准号: RGPIN-2018-04469
• 负责人: Carreau, Pierre
• 金额: $ 2.4万
• 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: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=646908
• 关键词: Development; Performance; Polymer; Blends

The main objective of this research program is to develop biopolymer blends based on polylactide (PLA) with outstanding properties to replace synthetic polymer blends for engineering and possibly biomedical applications. We will examine the properties of a few promising PLA-based blends made with a bio-based polyamide (PA11) or polycaprolactone (PCL), or with biodegradable poly(butylene succinate adipate), PBSA, and poly(butylene adipate terephthalate), PBAT. In parallel, the addition of nanoparticles to promising blends will be investigated to control and stabilize their morphology and improve the final properties of the blends. Potential nanoparticles are nanoclay (montmorillonite, sepiolite, halloysite nanotubes), carbon nanotubes and graphene. Selective localization of the nanoparticles will be sought, in particular at the interface of both polymer components. These blends and nanocomposites will be prepared via an internal mixer or using a small twin-screw extruder under different mixing conditions and possibly using a compatibilizer to reduce the interfacial tension between the polymer components. Models recently proposed to predict the evolution of the morphology and rheological properties will be assessed and eventually modified to improve predictions. The quality of the nanoparticle dispersion in each polymer component and the nanoparticle-polymer interactions will be assessed through linear viscoelastic measurements, in particular using the apparent yield stress, which will be correlated to the wetting coefficient. Rheometry in shear and elongational flows will be used again to verify the stability of the blend and nanocomposite morphology. Basic thermo-mechanical, tensile and impact properties of the blend nanocomposites will be determined. Finally, depending on the nanoparticle choice, electrical or barrier properties as well as foamability would be evaluated.

该研究计划的主要目的是开发基于多乳酸（PLA）具有出色特性的生物聚合物混合物，以取代用于工程和可能的生物医学应用的合成聚合物混合物。我们将研究与生物基聚酰胺（PA11）或聚二苯二甲酮（PCL）或可生物降解的聚（丁基琥珀酸酯脂肪），PBSA和聚（丁烷依代依然脂肪酸脂肪三苯二甲酸酯）制成的一些有前途的基于PLA的混合物的性能。同时，将研究将纳米颗粒添加到有希望的混合物中，以控制和稳定其形态并改善混合物的最终特性。潜在的纳米颗粒为纳米粘土（蒙脱石，sepiolite，hayoysite纳米管），碳纳米管和石墨烯。将寻求纳米颗粒的选择性定位，特别是在两个聚合物组件的界面上。这些混合物和纳米复合材料将通过内部搅拌机或在不同的混合条件下使用小的双螺钉挤出机制备，并可能使用兼容剂来减少聚合物组件之间的界面张力。最近，将评估并最终修改模型来预测形态和流变特性的演变以改善预测。每个聚合物成分和纳米颗粒聚合物相互作用中的纳米颗粒分散质量将通过线性粘弹性测量进行评估，特别是使用明显的屈服应力，这将与润湿系数相关。剪切和伸长流中的流变学将再次用于验证混合和纳米复合形态的稳定性。将确定混合纳米复合材料的基本热机械，拉伸和冲击性能。最后，根据纳米颗粒的选择，电气或屏障特性以及泡沫性。