<abstract xmlns="http://www.w3.org/1999/xhtml"><p> In this paper we have investigated the effect of 1,2,3-trideoxy-4,6:5,7-bis-O-[(4-propylphenyl)methylene]-nonitol sorbitol used in varying amounts (0.01 - 1 wt %) on isotactic polypropylene (iPP) matrix. We have used dynamic mechanical thermal analysis (DMTA) and differential scanning calorimetry (DSC) to study glass transition temperatures and crystallinity as a function of the nucleating agent concentration. Isotactic polypropylene samples showed a strong dependency on amount of α nucleating agent used. An increasing content of sorbitol based nucleating agent led to an increase of crystallization temperature upon cooling from the melt at constant rate and a decrease of the glass transition temperatures.</p></abstract>

In this paper we have investigated the effect of 1,2,3-trideoxy-4,6:5,7-bis-O-[(4-propylphenyl)methylene]-nonitol sorbitol used in varying amounts (0.01 - 1 wt %) on isotactic polypropylene (iPP) matrix. We have used dynamic mechanical thermal analysis (DMTA) and differential scanning calorimetry (DSC) to study glass transition temperatures and crystallinity as a function of the nucleating agent concentration. Isotactic polypropylene samples showed a strong dependency on amount of α nucleating agent used. An increasing content of sorbitol based nucleating agent led to an increase of crystallization temperature upon cooling from the melt at constant rate and a decrease of the glass transition temperatures.

Influence of heterogeneous nucleation on thermodynamic properties of isotactic polypropylene

monika.dobrzynska-mizera@doctorate.put.poznan.pl

Poznan University of Technology, Institute of Materials Technology, Piotrowo 3, 61-138 Poznań, Poland

MPTS Ltd, Szczepanowskiego 11, 60-541 Poznań, Poland

Polish Journal of Chemical Technology

In this paper we have investigated the effect of 1,2,3-trideoxy-4,6:5,7-bis-O-[(4-propylphenyl)methylene]-nonitol sorbitol used in varying amounts (0.01 - 1 wt...

Influence of heterogeneous nucleation on thermodynamic properties of isotactic polypropylene

Publié en ligne: 31 déc. 2013

Pages: 71 - 74

DOI: https://doi.org/10.2478/pjct-2013-0071

This content is open access.