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Irdoni Irdoni
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Pengaruh Suhu Dan Tekanan Vulkanisasi Terhadap Morfologi Dan Sifat Karet Alam Vulkanisat (Thermoset Rubber) Dengan Filler Abu Sawit / Carbon Black Muhammad Isra; Irdoni Irdoni; Bahruddin Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The production of natural rubber increase sufficient good in indonesia, while the natural rubber to be a product with a high valuable price still less developed than other countries. Therefore,we have to eforts it to employing this natural rubber be a product with a high valuable price from the raw material (natural rubber) to be vulcanized natural rubber using vulcanization process. The purpose of this study is to obtain the best conditions of the vulcanization process in the manufacture of vulcanized natural rubber with fly ash/carbon black filler, which is the variation of temperature 140, 150 and 160 °C and preasure of 50,100,150 and 200 kgf/cm2. The results vulcanized natural rubber of will be tested, it’s mecanical properties and morphology. Based on average yield mecanical properties and morphology tested is obtained that the operating conditions vulcanization process is temperature 150 °C and a pressure of 200 kgf/cm2.     Keyword : Natural rubber, Vulcanization, Vulcanized Natural Rubber.
Pengaruh Kadar Coupling Agent Maleated Natural Rubber Terhadap Morfologi Dan Sifat Karet Alam Thermoset Dengan Filler Abu Sawit/Carbon Black Andri Mulia; Bahruddin Bahruddin; Irdoni Irdoni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
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Maleated Natural Rubber (MNR) is a coupling agent which serves to facilitate mixing natural rubber and filler. This research aims to determine the effect of concentration MNR on the morphology and properties of thermoset rubber with fly ash/carbon black as filler. MNR content used were 2 phr 3 phr and 5 phr (per hundred rubber). Mastication process is carried out using a roll mill at room temperature, roll rotational speed of 20 rpm, and the overall time of the manufacture of compound ± 50 minutes. Constant variable is fly ash/carbon black, paraffin as plasticizer, ZnO as activator, stearic acid as co-activator, MBTS as accelerator, TMQ as anti-degradant, and sulfur as curative agent. The ratio of mass hybrid filler fly ash/carbon black used were 0/100; 30/70; 50/50; 70/30 and 100/0. Vulcanization process was carried out at a temperature of 150 °C and pressure of 50 kgf/cm2. Mechanical properties test includes tensile strength, elongation at break and elastic modulus using ISO 527-2 type 5A standard with a universal testing machine. Morphology test was carried out using a scanning electron microscope (SEM) and other parameter test was water absorption resistance. The result showed that coupling agent MNR affect the nature of thermoset and rubber. Best morphology image shows more evenly distributed filler, and interaction of filler and rubber formed quite homogeneous and uniform. The best mechanical properties obtained at 3 phr MNR with filler ratio of fly ash/carbon black 50/50 with a tensile strength of 18,147 MPa, elongation at break 1402.8 % and elastic modulus of 0.7688 MPa.Keywords : fillers hybrid , MNR, natural rubber, thermoset rubber.
Sintesis Bio-Pelumas Minyak Minyak Biji Jarak: Pengaruh Rasio Mol Dan Waktu Reaksi Angelina Debbie; Irdoni Irdoni; Nirwana Nirwana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
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A lubricant is an inseparable part of machine. Lubricants used to protect engine components from worn-out. Along with the increasing demands on materials that are environmentally friendly and renewable, vegetable oils or animal fats based Bio-lubricants can be claim as a solution. Castor oil is an oil that can not be consumed thus potentiallyy used as raw material for bio-lubricants. This research purposes to study the synthesis of bio-lubricants from castor oil to observe the effect of stirring speed and reaction temperature. The research was begun with the saponification of castor oil with 2 N KOH, the reaction temperature at 70 ° C. Solid formed was mixed with 10 N HCl and stirred for 20 minutes and then the formed fatty acid is separated from the rest of reactants. Furthermore, fatty acids will be esterified with etylen glycol on a stirring speed 180 rpm at 150C, with the variation of mole ratio: 1:3,1:4;1:5 and the reaction time: 2,4,6 hours . The highest yield is 91.15% at mole ratio 1:4 for 6 hours with a flash point 302°C, pour point 5°C, density 0.9005 g/ml and viscosity index amounted 145,596.Keywords: Bio-Lubricants, Castor Oil, Yield
Sifat Dan Morfologi Wood Plastic Composite Berbasis Batang Sawit Dengan Kadar Lignoselulosa yang Berbeda Melly Anggraeni; Irdoni Irdoni; Bahruddin Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Plantations of the palm in Indonesia is very large included Riau Province. It cause the palm trunk be the most waste and it has the potential to be utilized for manufacturing Wood Plastic Composite (WPC). Properties of the palm trunk is different and it has many weakness. Knowledge of stem’s lignocellulose can be easier to modify suitable materials for compatibility between WPC components. The main objective of this study is to determine the percentage of palm trunk parts longitudinally, to determine the lignocellulose component before and after preparation using oxalic acid, to evaluate the effect of palm trunk parts longitudinally and ratio of wood flour/polypropylene to the properties and morphology of WPC. The composition of wood flour was 100 mesh as filler and polypropylene as matrix are 50/50; 60/40; 70/30 with mixture of 2% paraffin as plasticizer, 5% maleic anhydride (MAH) and 5% Benzoyl peroxide (BPO). The palm trunk was prepared using oxalic acid at 120oC for 15 minutes. WPC samples were prepared using internal mixer Labo Plastomill at temperature 170oC and rotor speed 80 rpm. Testing experiments were prepared to mechanical properties consists of tensile strength and elastic modulus (MOE) and physical properties consists density, water absorption and swelling thickness. Scanning Electron Microscopy was used as a morphology testing with 50x and 500x magnification. The results showed that each part of palm and ratio of wood flour/polypropylene gives an influence. The best of WPC material is the base of stem at 70/30 ratio with tensile strength 15,125 MPa, MOE 2.308, 303 MPa, density 0,854 gr/cm3, water absorption 0,565%, and swelling thickness 0,133%.Keywords: lignocellulose, palm trunk, wood plastic composite
Pembuatan Grease Dari Minyak Biji Karet : Mempelajari Pengaruh Campuran Lioh-Ca(OH)2 Dan Rasio Base Oil Septiani Lestari; Irdoni Irdoni; Nirwana Nirwana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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Abstract

Grease is a semi-solid lubricant that is given between two metal objects that move independently or one of the moving objects while the other is stationary with the aim of reducing friction. Grease is applied to industrial and automotive machinery. Rubber seed oil is non edible oil because it is toxic, so it has the potential to be a grease. This research aims to make grease using rubber seed oil, studying the effect of ratio mol metal LiOH:Ca(OH)2, as well as the effect of comparison of metal soap:base oil on the quality and characteristics of grease. The research stage is: raw material preparation includes extraction of rubber seed oil by pressing method, then degumming process using phosphoric acid (85%) 0.5% (w/w), temperature of 90oC, for 1 hour and centrifuge for 20 minutes. Then the process of making metal soap (thickening agent), 100 ml of rubber seed oil is heated to a temperature of 70oC, then added LiOH:Ca(OH)2 metal while stirring with a stirring speed of 650 rpm for 30 minutes. Furthermore, the process of making grease, rubber seed oil as a base oil is mixed with metal soap (thickening agent) according to predetermined variables. The mixing process was carried out at a temperature of 70oC then metal soap (thickening agent) was added to the reactor and stirred with a stirring speed of 650 rpm for 30 minutes, after the temperature of the mixture reached 120oC additives added 5% w/w and a stirring time of 3.5 hours. Then the grease test is carried out, namely the dropping point test based on ASTM D566 and the penetration test based on ASTM D217. The best results on the soap formula 90%:10% and the grease formula 75%:20%:5% obtained dropping point 145oC, penetration 240 (0.1 mm) and NLGI 3.Keywords: grease, rubber seed oil, dropping point test, penetration test
Pembuatan Grease Dari Minyak Jelantah: Pengaruh Nisbah Mol LiOHNaOH Dan Nisbah Base Oil-Thickening Agent Terhadap Karakteristik Grease Rizky Sandy Harahap; Irdoni Irdoni; Bahruddin Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
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Abstract

Greases are used between rubbing metal surfaces to reduce friction. The utilized base oil could be vegetable oir or mineral oil. The objective of this research are to produce greasefrom waste cooking oil and to study the LiOH-NaOH ratio and base oil effect to grease characteristics. Grease-making methods comprised base oil (waste cooking oil) preparation, saponification to made thickening agent, and blending process with stirring speed 650 rpm among thickening agent, base oil and additive for the grease-making. The variations used were LiOH-NaOH ratio (90:10; 80:20; 70:30) and base oil:thickening agent ratio (75:20; 77,5:17,5; 80:15; 82,5:12,5; 85:10). The test methods conducted were penetration test ASTMD217 for grease consistency and dropping point ASTM D566. The best grease obtained belong to grease specification and performance parameter for NLGI grade A quality levelwith thickening agent formulation LiOH:NaOH ratio 90:10 and grease formulation base oil:thickening agent ratio 75:20 with penetration 227 (0,1 mm), NLGI number 3 (25 oC) anddropping point 139 oC.Keyword : dropping point test, grease, penetration test, waste cooking oil.
Pengaruh Kadar Dan Ukuran Selulosa Berbasis Batang Pisang Terhadap Sifat Dan Morfologi Bioplastik Berbahan Pati Umbi Talas Roy Marthin Panjaitan; Irdoni Irdoni; Bahruddin Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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Plastic waste is one of environmental problem especially in Indonesia. Conventional plastic is made from synthetic polymer that is made by petroleum which hard to recycle or break down by microorganism. Bioplastic is the answer of this problem. Starch is kind of natural polymer that can be used for bioplastic production because the sources overflow, renewable and ready degradable. However, starch have a bad mechanical characteristic. Cellulose as the strengthened has been proved to overcome the lack of starch. This research is aim to analyze the effect of composition and size of cellulose particle to get the best combination of bioplastic mechanical characteristic and morphology. Bioplastic was made by casting method where the taro’s starch, glycerol and cellulose are mixed. This research take variable on addition level of cellulose 6, 9, 12, 15%wt with cellulose fiber sizes of 100, 150 and 200 mesh. The composition with a good characteristic was 15%wt cellulose with the size 150 mesh with strength 7,595 MPa, elongation 11,379%, modulus young 66,465 MPa, water uptake 37,50%, and biodegradation is about 36,11% in one week.Keyword : bioplastic, casting, cellulose, glycerol, starch
Sintesis Biodiesel Dari Minyak Nyamplung (Calophyllum Inophyllum L.) Menggunakan Katalis Lantanum/Lempung; Pengaruh Variasi Logam Lantanum Dan Rasio Mol Minyak : Metanol Ibnu Oktariza; Syaiful Bahri; Irdoni Irdoni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Biodiesel can be made from Alexandrian laurel oil as one of alternative energy replacement for fossil fuels. This aims of this research were determine the effect of lanthanum metal variation and variation in the ratio of oil : methanol against product results biodiesel, to produce biodiesel from Alexandrian laurel oil as alternative fuels renewable energies that can be renewed and identify the characteristics of the physical and chemical properties of biodiesel produced. Catalyst is made by grinding the clay to a size of -100 +200 mesh, then clay was activated using H2SO4 solution 1.2 M. The variation of lanthanum metal impregnation on clay are 0%-b, 1%-b, 3%-b, 5%-b, then calcined, oxidation and reduction. Production of biodiesel is carried out through two stage: esterification and trans-esterification with variation in the mole ratio of oil : methanol is 1 : 6, 1 : 9 and 1 : 12. Alexandrian laurel oil sample weight 50 gram and 3% by weight of catalyst added to the to trans-esterification reactor. The reaction lasted at 60 0C with agitation speed 400 rpm for 120 minutes. This research resulted in the largest biodiesel yield on the use of La(1%)/clay catalyst with variation mole ratio of oil : methanol 1 : 9 is 86.90%. The characteristics of the catalyst that has a surface area ratio respectively 2.95, 40.22, 27.59, and 18.48 (m2/g). The Biodiesel produced in accordance with established standards (SNI 04-7128-2016).Keywords : biodiesel, Alexandrian laurel oil, lanthanum/clay catalyst
Sintesis Biopelumas Dari Minyak Biji Karet: Pengaruh Rasio Molar Minyak Dan Oktanol Serta Suhu Reaksi Terhadap Yield Biopelumas Susilawati Susilawati; Irdoni Irdoni; Nirwana Nirwana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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A lubricant is a liquid that is given between two moving metal objects to reduce the friction. Rubber seed oil is an oil that cannot be consumed because it is poisonous, so it has the potential to be a biolubricant. This research purposes to synthesize biolubricant by using rubber seed oil as raw material and determine the effect of oil and octanol mole ratio and reaction temperature to the biolubricant yield. This research was carried out in several stages: preparation of raw materials including extraction of rubber seed oil by pressing method, then continued by degumming process to purify the oil from the gum. Next, the esterification process to reduce of free fatty acid at the oil. Then, oil will be transesterification process with octanol to make biolubricant with variations of mole ratio oil : octanol was 1:3, 1:5 and 1:7 and variations temperature reaction of 150oC, 170oC and 190oC. This process was did for 6 hours by adding 3% (v/v) oil of NaOCH3 as a catalyst. The highest yield produced was 86,105%. The best biolubricant characteristics were produced at a mol ratio of 1: 5 and reaction temperature of 190°C with a density of 0.832 gr/ml, viscosity index 198.658, flash point 324oC, pour point 5oC and yield 84.357%.Keywords: biolubricants, rubber seed oil, octanol, transesterification
Co-Authors Abd. Rasyid Syamsuri Ahmad Fadli Andri Mulia Angelina Debbie Angga Dwina Putra Bahruddin Chairul Chairul DESI PURNAMA SARI Edy Saputra Fenny Lasma Hilde S Herlili Peronika Ibnu Oktariza Idral Amri Lia Yuningsih Liendra Juniarti Marihot Danield Vyendri Simatupang Melly Anggraeni Mohammad Rezky Muhammad Isra Nico Gunawan Nirwana Nirwana Noferi Yanli Novika Sri Wardani Randi Farlindo Risky Deliana Rizky Sandy Harahap Roy Marthin Panjaitan Septiani Lestari Silvia Rahmi Suhendri Suhendri Susilawati Susilawati SYAIFUL BAHRI Syarfi Syarfi Wahyu Suci Rahmani Wan Elsa Novtari Adiani Yanny Sartika Yelmida Azis Yusnila Halawa