tailieunhanh - Báo cáo vật lý: "Effect of Treated and Untreated Filler Loading on the Mechanical, Morphological, and Water Absorption Properties of Water Hyacinth FibersLow Density Polyethylene Composites"

Tuyển tập các báo cáo nghiên cứu khoa học trên tạp chí khoa học vật lý quốc tế đề tài: Effect of Treated and Untreated Filler Loading on the Mechanical, Morphological, and Water Absorption Properties of Water Hyacinth FibersLow Density Polyethylene Composites | Journal of Physical Science Vol. 20 2 85-96 2009 85 Effect of Treated and Untreated Filler Loading on the Mechanical Morphological and Water Absorption Properties of Water Hyacinth Fibers-Low Density Polyethylene Composites Supri A. G. and B. Y. Lim School of Materials Engineering Universiti Malaysia Perlis UniMAP 01000 Kangar Perlis Malaysia Corresponding author supri@ Abstract Cellulose obtained from water hyacinth Eichhornia crassiper fibers were blended with low-density polyethylene LDPE forming LDPE water hyacinth fiber WHF composites. In this work the effects of filler loading on the mechanical morphological and water absorbent properties of this composite were investigated. Two types of fibers were used namely treated fibers where some of the fibers were treated with coupling agent and untreated fibers. It was found that the tensile strength of the composites increased with increasing of the filler concentration. The presence of coupling agent improved the interfacial bonding between the matrix and water hyacinth fibers as evidenced by scanning electron microscopy SEM . In addition fiber loading increased the water absorption of the composites. The treated fibers showed a reduction in water uptake. Keywords cellulose water hyacinth fibers low-density polyethylene Abstrak Selulosa yang diperolehi dari serat keladi bunting Eichhornia crassiper yang diadunkan dalam polietilena berketumpatan rendah LDPE untuk menghasilkan komposit LDPE serat keladi bunting WHF . Dalam kajian ini kesan pembebanan pengisi ke atas sifat-sifat mekanikal sifat-sifat morfologi dan penyerapan air telah dikaji. Dua jenis serat digunakan iaitu serat yang dirawat dan serat yang tidak dirawat di mana sebahagian serat yang dirawat menggunakan agen pengserasi. Didapati bahawa kekuatan tensil komposit bertambah dengan pertambahan pembebanan pengisi. Kehadiran agen pengserasi telah meningkatkan ikatan antara muka di antara matrik dan serat keladi bunting seperti yang dilihat .