The effect of addition of different elastomers upon the crystalline nature of PP

• Published in: Journal of applied polymer science Vol. 81; no. 14; pp. 3530 - 3537
• Main Authors: Da Silva, Ana Lúcia N., Rocha, Marisa C. G., Lopes, Léa, Chagas, Beatriz S., Coutinho, Fernanda M. B.
• Format: Journal Article
• Language: English
• Published: New York John Wiley & Sons, Inc 29-09-2001; Wiley
• Subjects: Applied sciences; Crystallization; crystallization kinetics; elastomers; Exact sciences and technology; Organic polymers; Physicochemistry of polymers; Properties and characterization; Polymer blends; Property composition relationship; Propylene polymer; Dispersion reinforced material; Experimental study; Heterogeneous mixture; Structure composition relationship; EPDM rubber; Melt crystallization; Spherulites; Ethylene copolymer; Kinetics; Isothermal crystallization
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.1809

Thermal and morphological studies have been performed on polymer blends based on ethylene–octene copolymer (PEE)/PP and ethylene–propylene–diene copolymer (EPDM)/PP. The thermal and morphological behavior of PEE, EPDM, PEE/PP, and EPDM/PP systems were analyzed by differential scanning calorimetry (DSC) and polarizing light microscopy, respectively. It was observed that the behaviors of crystallization kinetics of PEE/PP and EPDM/PP blends were similar. It was also observed that addition up to 10–20% (w/w) of elastomers resulted in increasing of spherulite size. The heat of fusion (ΔHf) and crystallinity degree of PEE/PP and EPDM/PP systems decreased when the elastomer contents were increased. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 3530–3537, 2001