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Influence of the CaCO 3 nanoparticles on the molecular orientation of the polypropylene matrix
Author(s) -
GarcíaLópez D.,
Merino J. C.,
Pastor J. M.
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12030
Subject(s) - polypropylene , tacticity , materials science , nanoparticle , extrusion , composite material , composite number , matrix (chemical analysis) , orientation (vector space) , polymer , chemical engineering , polymer chemistry , nanotechnology , polymerization , geometry , mathematics , engineering
The presence of aggregates of CaCO 3 nanoparticles in an isotactic polypropylene matrix processed by extrusion promotes the apparition of residual stresses. These stresses are removed with a thermal treatment of the composite, but a higher molecular orientation is then produced. The chain orientation inside the sample is nonhomogeneous due to the presence of the aggregates of nanoparticles. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 947–952, 2003