Journal
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
Volume 29, Issue 12, Pages 1641-1655Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0892705715583175
Keywords
Kapok husk; linear low-density polyethylene; ecocomposites; polyethylene-grafted acrylic acid; coupling agent
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This research focuses on utilization of kapok husk (KH) as a natural filler in linear low-density polyethylene (LLDPE) ecocomposites. The effect of KH content and coupling agent on tensile properties, thermal properties, water absorption behavior, and morphology of ecocomposites were studied. The addition of KH had increased tensile modulus and water absorption of ecocomposites, whereas tensile strength and elongation at break decreased. However, the polyethylene-grafted acrylic acid (PEAA) was used as a polymeric-coupling agent to enhance the properties of LLDPE/KH ecocomposites. The incorporation of PEAA improved the tensile strength, tensile modulus, crystallinity, and thermal stability as well as reduced the water absorption of LLDPE/KH ecocomposites. The improvement of those properties was caused by the enhanced interfacial bonding, which was evidenced by scanning electron microscopy. The Fourier transmission infrared spectra also confirmed the presence of ester linkage between PEAA and KH.
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