Effects of EPDM-g-MAH compatibilizer and internal mixer processing parameters on the properties of NR/EPDM blends: an analysis using response surface methodology
ABSTRACT: This study evaluates the effects of ethylene-propylene-diene-monomer grafted maleic anhydride (EPDM-g-MAH) and internal mixer melt compounding processing parameters on the properties of natural rubber/ethylene-propylene-diene rubber (NR/ EPDM) blends. Using Response Surface Methodology (...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
John Wiley & Sons
2015
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| Subjects: | |
| Online Access: | http://eprints.utem.edu.my/id/eprint/14472/1/app42199.pdf http://eprints.utem.edu.my/id/eprint/14472/ http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-4628 |
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| Summary: | ABSTRACT: This study evaluates the effects of ethylene-propylene-diene-monomer grafted maleic anhydride (EPDM-g-MAH) and
internal mixer melt compounding processing parameters on the properties of natural rubber/ethylene-propylene-diene rubber (NR/
EPDM) blends. Using Response Surface Methodology (RSM) of 25 two-level fractional factorial, we studied the effects of NR/EPDM
ratio, mixing temperature, Banbury rotor speed, mixing period, and EPDM-g-MAH contents in NR/EPDM blends. The study found
that the presence of EPDM-g-MAH in NR/EPDM blends had a predominant role as a compatibilizing agent, which affected the processability
and properties of the final material. We also determined the model fitting with constant determination, R2 of 99.60% for
tensile strength (TS) response with a suggested combination of mixing process input parameters. The reproducibility of the proposed
mixing strategy was then confirmed through model validation with a minor deviation at 12.303% and higher desirability of 0.960.
This study is essential in providing a process design reference for NR/EPDM blends preparation by melt-blending and the role of a
compatibilizer from the systematic Design of Experiment (DOE) approach. The experimental findings were further supported with
swelling and cross-link density measurements, differential scanning calorimetry analysis, and observation of fracture morphology
using a scanning electron microscope. VC 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42199. |
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