研究目的
The aim of this research is to characterize uniquely produced graphene containing polymer matrix composites using a newly created elongational flow field. Using elongational flow, graphite will be directly exfoliated into graphene within a molten polymer.
研究成果
The novel process of elongational exfoliation in the molten phase successfully produced pristine, large area nanographite and multilayer graphene flakes. The process was found to be diffusion-driven, with intercalation of PA66 within the graphite galleries leading to a 76% reduction in the initial (002) domain size. The resulting graphene-reinforced polymer matrix composite showed changes in the hydrogen bonded structure, affecting the thermal properties and crystallization behavior of PA66. The study demonstrates a single-step approach to create and modify graphene within a polymer matrix, offering potential for scalable production of graphene-polymer composites.
研究不足
The study focuses on the exfoliation of graphite within a PA66 matrix and may not be directly applicable to other polymer matrices. The process requires high temperatures and an inert atmosphere to prevent polymer degradation, which could limit scalability. The study also notes that extensive mixing times can lead to partial degradation of the polymer, affecting the composite's properties.