PP/ROSIN Blends: Isothermal Crystallization

The isothermal crystallization of polypropylene (PP) melt blended with a glycerpl ester of hydrogenated rosin (ester gum) (PP/ROSIN) were prepared under select conditions using up to 50% of rosin revealed phase separation. The presence of rosin changed the radial growth rate and size of PP spherulit...

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Bibliographic Details
Published in:International journal of polymeric materials 2000-07, Vol.46 (3-4), p.801-808
Main Authors: Mendes, L. C., Cardoso, R. S., Chagas, B. S., Moraes, G. F.
Format: Article
Language:English
Subjects:
Applied sciences
blends
Crystallization
Exact sciences and technology
isothermal crystallization
Organic polymers
Physicochemistry of polymers
Polypropylene
Properties and characterization
rosin
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Summary:The isothermal crystallization of polypropylene (PP) melt blended with a glycerpl ester of hydrogenated rosin (ester gum) (PP/ROSIN) were prepared under select conditions using up to 50% of rosin revealed phase separation. The presence of rosin changed the radial growth rate and size of PP spherulites. The rosin-separated domains were noticed in the intraspherulitic and interspherulitic regions and increased in size when the oligomer enriched the blends. Up to 30% of rosin, samples isothermally crystallized at 125°C showed a decrease of spherulite radial growth rate and above that amount an increase was observed.
ISSN:0091-4037
1563-535X
DOI:10.1080/00914030008033915