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All Journal Peronema Forestry Science Journal
Luthfi Hakim
Staf Program Studi Kehutanan, Fakultas Pertanian, Universitas Sumatera Utara, Jl. Tri Dharma Ujung No. 1 Kampus USU Medan 20155
Agriculture, Biological Sciences & Forestry

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Sifat Antirayap Ekstrak Kulit Bawang merah (Allium cepa L.) (Antitermites Properties of Onion Shell Extract) Margaretha Uliartha Sari; Rudi Hartono; Luthfi Hakim
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The aims of these researchs were to found the extract content of Allium cepa L.,                to evaluated weight lost of paper disc, to evaluated the toxicity level of Allium cepa L. extracts based on mortality rates and to evaluated feeding rate value. Research was done by extracting       a sample with methanol then partitioning with n-Hexane. Extract with concentration of 2%, 4%, and 6% were used to test the toxicity of extract for Coptotermes curvignathus termites. The results showed extract content of Allium cepa L. was 16,62%. Termite mortality rate was 100% with concentration  2% and 4% on day 7th while the concentration of 6% on day 5th. So extract with the large concentration had higher mortality of termite than the lower. The weight lost of paper disc     was around 3,72%–11,04% and feeding rate of termite was around 0,25 mg–0,73 mg. Keywords: extract of Allium cepa L., termite mortality, weight lost percentage, C. curvignathus
Fiber-Plastic Composite Made of Old Corrugated Paper and Polyethylene (PE) with Maleic Anhydride (MAH) and Benzoyl Peroxide (BP) Rumondang Bulan Batubara; Luthfi Hakim; Tito Sucipto
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (405.987 KB)

Abstract

The research of utilizion corrugated fiber and plastic polyethylene as the raw material of making fiber plastic composite (FPC) board was useful to give solution the waste problem. The purpose of research was to evaluate physical properties (density, moisture content, water absorbtion, thickness swelling) and mechanical properties (modulus of elasticity, modulus of rupture, internal bond, screw holding power) composite board of fiber corrugated paper and comparing the use of polyethylene plastic (PE) with maleic anhydride as compatilizer and benxzoil peroxide as initiator and comparing the physical and mechanical properties FPC board wtih testing the physical and mechanical properties the composite board were carried out according to JIS A 5905-2003 hardboard S20 dan JIS A 5908 (2003) particleboards type 13.The result of the research showed that physical the fiber plastic composite board did not fulfill the standard of JIS A 5905-2003 hardboard S20, except density, water absorption and the thickness swelling. The testing of mechanical properties did not fulfill standar JIS A 5905-2003 hardboard S20 dan JIS A 5908 (2003) particleboards type 13, except internal bond and screw holding power. FPC board suitable for using exterior and interior, because by on physis and mechanical properties testing, the best value of fiber plastic composite was composition 60:40 MAH 5%. Keywords: fiber corrugated paper, polyethylene, fiber plastic composite, physiscal and mechanical properties.
Co-Authors Margaretha Uliartha Sari Rudi Hartono Rumondang Bulan Batubara Sucipto, Tito