Relationship between mould temperature and properties of injection-moulded pure and beta nucleated polypropylenes

Abstract

An influence of the mould temperature (MT) on structure and properties of the samples injection-moulded from pure and β nucleated isotactic polypropylene (β-iPP) was investigated. Pure and 0,03 wt. % of nucleating agent NJ Star NU-100 doped iPP was isothermally solidified in the range of mould temperature 40-120°C. Polymorphic composition studied by means of wide-angle X-ray scattering did not show significant sensitivity to MT. On the contrary, moulding temperature notably influenced mechanical behaviour of both pure and β-iPP samples.