A mixture of effective nucleating agents changed the
crystalline behavior. With an increase in filled quantity,
the crystallization temperature improved. Effective nucleating agents not only speeded up PP crystallization
under higher temperatures and crystallization velocity,
but also made the spherulite size decrease and the crystallinity increase, because of the rate of spherocrystal growth is slower at higher crystallization temperatures, where more molecular chain segments can easily
form a perfect crystallization 2 .