The Improvement of Mechanical Properties of PCL/Microcellulose Biocomposites from Corn Cobs by Adding PCLacac as a Compatibilizer
DOI:
https://doi.org/10.24114/ijcst.v9i1.72145Keywords:
Biocomposite, cellulose, compatibilizer, corn cob, PCLAbstract
Biocomposites have wide potential in eco-friendly packaging, agriculture, and biomedical applications such as scaffolds and drug delivery. This study uses poly(ε-caprolactone) (PCL) as a biocompatible, flexible matrix and microcellulose from corn cobs as a renewable, abundant, and low-cost filler. The PCL–microcellulose combination is expected to improve mechanical properties while adding value to agricultural waste. To enhance compatibility between matrix and filler, short-chain synthetic PCL (PCLacac) was added at 0%, 2.5%, 7.5%, and 10%. Serving as a compatibilizer, PCLacac promotes interaction with cellulose hydroxyl groups. The prepared biocomposites were molded according to ASTM D638 standards and characterized. Tensile results showed that the addition of 2.5% PCLacac gave the highest increase in tensile strength. FTIR analysis confirmed hydrogen bonding between PCL carbonyl and cellulose hydroxyl groups, indicated by absorption band shifts. Thus, optimal PCLacac addition (2.5%) enhances mechanical performance and transforms low-value corn cob waste into high-value biocomposites.References
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