Kesan modifikasi Sekam padi dengan getah asli cecair dan dedahan kepada alur elektron ke atas sifat mekanik komposit NR/HDPE/Sekam padi

Translated title of the contribution: Effects of Rice husk modification with liquid natural rubber and exposure to electron beam radiation on the mechanical properties of NR/HDPE/Rice husk composites)

Chong Ee Lane, Ishak Ahmad, Dahlan Hj Mohd, Ibrahim Abdullah

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Rice husk (RH) powder is a natural fibre capable of reinforcing natural rubber thermoplastic (TPNR) NR/HDPE composites on specific modification of the particle surface. In this study the modification of RH powder involved pre-treatment with 5% sodium hydroxide (NaOH) solution, soaking in LNR solution and exposure of LNR coated RH to electron beam (EB) irradiation. Preparation of NR/HDPE/RH composites was via melt-mixing in an internal mixer at predetermined conditions. Morphology study of the composites using scanning electron microscope (SEM) showed a homogeneous distribution of modified RH particles and particle-matrix interaction in the composite. Modified RH filled composites exhibited a significant change in mechanical properties. The maximum stress and impact strength were 6.7 MPa and 13.2 kJ/m2, respectively at 20 kGy radiation, while the tensile modulus was 79 MPa at 30 kGy dose. The interfacial RH-TPNR interaction for the LNR-EB treated RH particles had improved in the EB dosage range of 20-30 kGy. However, over exposure to radiation caused degradation of rubber coat and interaction between particles to increase. Agglomeration of filler particles would occur and caused inhomogeneous distribution of filler in the composite.

Original languageUndefined/Unknown
Pages (from-to)985-992
Number of pages8
JournalSains Malaysiana
Volume40
Issue number9
Publication statusPublished - Sep 2011

Fingerprint

rice hulls
composite materials
rubber
mechanical properties
electrons
liquids
fillers (equipment)
powders
natural fibers
thermoplastics
mixers
sodium hydroxide
dosage
scanning electron microscopes
soaking
pretreatment
irradiation
degradation

Keywords

  • Electron beam irradiation
  • Rice husk
  • Thermoplastic natural rubber

ASJC Scopus subject areas

  • General

Cite this

Kesan modifikasi Sekam padi dengan getah asli cecair dan dedahan kepada alur elektron ke atas sifat mekanik komposit NR/HDPE/Sekam padi. / Lane, Chong Ee; Ahmad, Ishak; Mohd, Dahlan Hj; Abdullah, Ibrahim.

In: Sains Malaysiana, Vol. 40, No. 9, 09.2011, p. 985-992.

Research output: Contribution to journalArticle

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abstract = "Rice husk (RH) powder is a natural fibre capable of reinforcing natural rubber thermoplastic (TPNR) NR/HDPE composites on specific modification of the particle surface. In this study the modification of RH powder involved pre-treatment with 5{\%} sodium hydroxide (NaOH) solution, soaking in LNR solution and exposure of LNR coated RH to electron beam (EB) irradiation. Preparation of NR/HDPE/RH composites was via melt-mixing in an internal mixer at predetermined conditions. Morphology study of the composites using scanning electron microscope (SEM) showed a homogeneous distribution of modified RH particles and particle-matrix interaction in the composite. Modified RH filled composites exhibited a significant change in mechanical properties. The maximum stress and impact strength were 6.7 MPa and 13.2 kJ/m2, respectively at 20 kGy radiation, while the tensile modulus was 79 MPa at 30 kGy dose. The interfacial RH-TPNR interaction for the LNR-EB treated RH particles had improved in the EB dosage range of 20-30 kGy. However, over exposure to radiation caused degradation of rubber coat and interaction between particles to increase. Agglomeration of filler particles would occur and caused inhomogeneous distribution of filler in the composite.",
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