Sodium alginate/feather keratin-g-allyloxy polyethylene glycol composite phase change fiber

Abstract

In this study, the novel sodium alginate/feather keratin-g-allyloxy polyethylene glycol (SA/FK-g-APEG) composite phase change fiber was designed and fabricated via centrifugal spinning for the first time. The chemical structure of the composite fiber was characterized by FT-IF and NMR, the thermal property was characterized by DSC, and the morphology features was analyzed by SEM and EDS. The NMR result demonstrates there are chemical shifts at δ = 155.6 ppm indicating CC has been successfully introduced via acylation，and at δ = 70.06 ppm indicating that allyloxy polyethylene glycol (APEG) has been grafted onto feather keratin (FK). The DSC results show an decline in the endothermic peak related to melting of the APEG from 54.87 °C to 40.1 °C (phase change fiber), indicating the strong interaction between sodium alginate (SA) and feather keratin-g-allyloxy polyethylene glycol (FK-g-APEG). The mechanical properties test shows that the optimal spinning temperature is 40 °C, and the optimal Centrifugal speed is 500 r/min.

Keywords: Centrifugal spinning; Composite fiber; Feather keratin; Phase change materials.