Thermal effect of polymer layers deposition on polypropylene nonwoven fabric

摘要

To prepare various types of multilayers, polyelectrolytes poly(acrylic acid), poly(allylamine hydrochloride), and poly(dimethyl aminoethyl methacrylate) were prepared and deposited onto polypropylene nonwoven fabrics produced in the melt-blowing process. Each type of external layer deposited was dyed for identification. Utilizing the layer-by-layer method to deposit polyelectrolyte layers considerably strengthens the thermal resistance of the modified fabric (the difference in T_(50%) is over 40°C). The effect is connected with the type and number of layers. Thermal effects were also observed in both dynamic and isothermal analyses under air atmosphere.