Journal
POLYMERS
Volume 14, Issue 17, Pages -Publisher
MDPI
DOI: 10.3390/polym14173515
Keywords
bentonite clay; intercalation; ultrasonic method; natural rubber; epoxidized natural rubber
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Funding
- Prince of Songkla University
- Ministry of Higher Education, Science, Research and Innovation under the Reinventing University [REV64048]
- Natural Rubber Innovation Research Institute Prince of Songkla University, Thailand [SCI6201095S]
- Faculty of Science Research Fund, 2021 [CT-MX75-TQ]
- Rubber Product and Innovation Development Research, Faculty of Science., Prince of Songkla University [SCIRU63002]
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A novel composite based on rubber and modified bentonite clay was investigated. It was found that sonication of bentonite clay in ethanol solution improved its dispersion and mechanical properties. Particularly, the bentonite clay showed superior intercalation effect in the ENR50 composite.
Novel composite based on rubber and modified bentonite clay (Clay) was investigated. The modified bentonite clay was developed by dispersing in ethanol solutions (Et-OH) using ultrasonic method. The effect of Et-OH on the dispersion of bentonite clay at various mixing temperatures in case of different type of rubber matrix, i.e., natural rubber (NR), epoxidized natural rubber (ENR25, ENR50) on dynamic mechanical rheology, Payne effect, XRD and mechanical properties of rubber composites were studied in detail. The bentonite clay dispersion in Et-OH at a mixing temperature of 80 degrees C improves the intercalation and exfoliation in rubber chains. Bentonite clay is highly intercalated in ENR 50-Clay composite, which can be confirmed from its superior mechanical properties. The results indicated that sonication of bentonite clay in Et-OH improves the interlayer spacing of bentonite clay by partial intercalation of rubber matrix.
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