Fast-scanning calorimetry of electrospun polyamide nanofibres: Melting behaviour and crystal structure

摘要: Abstract This paper discusses the melting behaviour and crystal structure of electrospun (polymorphous) polyamide (PA) fibres presents importance heating rate used for their study by thermal analysis. A case PA6, PA46 PA69 nanofibres is performed using a Rapid Heat-Cool DSC (RHC), fast-scanning calorimeter capable controlled rates above 1000 K min−1. Thermal lag becomes significant at scan 500 K min−1 ideal analysis depends on PA type. Measurements most suitable indicate that stability crystals higher compared to bulk material. Additionally, more stable are favoured in finer nanofibres. especially PA6 nanofibres, having an increasing fraction α-crystal phase with decreasing fibre diameter, as shown both X-ray diffraction.