Journal
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume 94, Issue 1, Pages 119-127Publisher
SPRINGER
DOI: 10.1007/s10973-007-8908-8
Keywords
crystallization; interfacial free energies; polypropylene; wood flour
Funding
- Secretaria Xeral de Investigacion e Desenrolo, Xunta de Galicia [XUGA-PGIDIT05TMT17201PR]
- Hamburg (Hasylab, DESY)
- European Commission [R113-CT-2004-506008 (IA-SFS)]
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Isothermal crystallization and melting of isotactic polypropylene in binary polypropylene-wood flour composites has been studied by DSC, and the influence of an ethylene-methacrylic acid copolymer interfacial agent analyzed. Wood flour induces a slight nucleating effect, reducing the basal interfacial free energy of nucleation and increasing the overall crystallization rate. The interfacial agent generates a compatibilization phenomenon and an increase in the basal interfacial free energies with respect to the binary composites. In both binary and ternary systems the melting behaviour is a function of undercooling and is unaltered by the presence of either wood flour or the interfacial agent.
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