Windu Sediono
Program Diploma III Teknik Mesin Fakultas Teknik Universitas Diponegoro

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KAJIAN PELEPAH KELAPA SEBAGAI SERAT KOMPOSIT (STUDY OF COCONUT BRANCH AS COMPOSITE FIBER) Darmanto, Seno; Sediono, Windu; Setyoko, Bambang; Murni, Murni
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (188.107 KB) | DOI: 10.14710/teknik.v28i1.2075

Abstract

Research is done to analyze coconut branch fiber as car body composite. Analyzing is based onmaterial, composition, and strength of material. Research was done in laboratory. Coconut branchfiber is obtained by natural drying process and cutting to become fiber with ±0,5 mm of length.Reinforcement and binder is determined polyester resin. Coir (coconut fiber) have 1.15 kg/m3 ofdensity, 1.15 MPa of strength dan modulus elastisitas 4 – 6 GPa. And based on specimen and studyof literatures can show that increase of cellulose of natural fiber will increase modulus of elasticity.The Increasing of modulus of elasticity will be maximal with cellulose more than 60%. Color ofspecimen is transparent yellow.
ANALISA KARAKTERISTIK BIODIESEL NYAMPLUNG Darmanto, Seno; Sediono, Windu; Sarwoko, Sarwoko; Triyatno, Triyatno
Gema Teknologi Vol 16, No 4 (2012): October 2011 - April 2012
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (36.37 KB) | DOI: 10.14710/gt.v16i4.4784

Abstract

Seno Darmanto, Windu Sediono, Sarwoko, Triyatno, in this paper explain that making of callophylum inophylum biodiesel fuel is done alkaly transesterification methode. Alkaly transesterification methode use methanol and basa (NaOH) of catalist. Procedur and setting of research that is consisted in material selection, treatment and setting of composition of methanol and catalist, operational temperature, reaction time, speed and mixer technical will effect quality and conversion level of callophylum inophylum biodiesel. And based data analyzer show that conversion of callophylum inophylum biodiesel can reach 90%. Properties of callophylum inophylum biodiesel show viscosity and flash point of callophylum inophylum biodiesel is ligthly higher than diesel fuel. And caloric value of callophylum inophylum biodiesel is slightly lower than diesel fuel. Key words: callophylum inophylum, biodiesel, properties, transesterification.