Influence of heat-stabilization on supermolecular structure of colored PP fibers

Investigations of supermolecular structure and tensile properties of colore d heat-stabilized fibers were carried out. For fiber coloring, chosen organ ic pigments with differentiated nucleating properties were used. It was sta ted that during the fiber formation, a fibrillar-lamellar structure with al pha-crystals is formed. In fibers colored with a quinacridone pigment, the minimal number of beta-crystals was observed. During heat-stabilization, pe rfecting of the supermolecular structure of the fiber occurs. Because of pi gments, the process of rebuilding occurs more intensively and leads to form ation of a more stable structure with higher crystallinity. (C) 1999 John W iley & Sons, Inc.