Bis-GMA/TEGDMA dental composites reinforced with electrospun nylon 6 nanocomposite nanofibers containing highly aligned fibrillar silicate single crystals

摘要

The objective of this research was to study the reinforcement of electrospun nylon 6/fibrillar silicate nanocomposite nanofibers on Bis-GMA/TEGDMA dental composites.The hypothesis was that the uniform distribution of nano-scaled and highly aligned fibrillar silicate single crystals into electrospun nylon 6 nanofibers would improve the mechanical properties of the resulting nanocomposite nanofibers,and would lead to the effective reinforcement of dental composites.The nylon 6/fibrillar silicate nanocomposite nanofibers were crystalline,structurally oriented and had an average diameter of approximately 250 nm.To relatively well distribute nanofibers in dental composites,the nanofiber containing composite powders with a particle structure similar to that in interpenetration networks were prepared first,and then used to make the dental composites.The results indicated that small mass fractions(1% and 2%)of nanofiber impregnation improved the mechanical properties substantially,while larger mass factions(4% and 8%)of nanofiber impregnation resulted in less desired mechanical properties.