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Publikováno v:
Polymer. 42:7127-7135
The influence of β crystals on the mechanical properties of isotactic polypropylene is studied on compression-moulded sheets without filler or filled with stearate-coated calcium carbonate particles. A crystallisation procedure is setup for producin
Publikováno v:
Journal of Applied Polymer Science. 74:195-200
Under special crystallization conditions from the melt, both α- and β-forms of isotactic polypropylene were produced simultaneously. The α- and β-spherulites of polypropylene were differentiated under optical microscope, allowing the nanoindentat