scholarly journals Perubahan Karakteristik Aspal Pen 60/70 dengan Substitusi Getah Karet Alam Pangkalan Balai, Sumatera Selatan

2021 ◽  
Vol 6 (3) ◽  
pp. 143
Author(s):  
Barkah Wahyu Widianto ◽  
Mochamad Isa Faishal
Keyword(s):  
Weight Loss ◽  
Specific Gravity ◽  
Natural Rubber ◽  
Softening Point ◽  
Natural Rubber Latex ◽  
Production Data ◽  
Test Results ◽  
Rubber Latex ◽  
Rubber Production ◽  
Asphalt Modification

ABSTRAKBerdasarkan data Produksi Karet di Indonesia terdapat peningkatan rata-rata 1,5% pada tahun 2015-2020, dimana produksi karet terbesar adalah Provinsi Sumatera Selatan yaitu 28,77%. Dengan peningkatan dan upaya pemanfaatannya maka dilakukan penelitian substitusi getah karet ke aspal. Getah karet yang digunakan adalah berbentuk padat dan berasal dari Pangkalan Balai, Sumatera Selatan. Penelitian ini bertujuan untuk mengkaji karakteristik aspal pen 60/70 disubstitusi dengan kadar getah karet alam 0%, 2,5%, 5%, dan 7,5%. Pengujian mengacu pada SE Menteri PUPR No 04/SE/M/2019. Hasil pengujian menunjukan nilai penetrasi, daktilitas, berat jenis, viskositas 135°C, kelarutan dalam TCE, TFOT, serta penetrasi dan daktilitas setelah kehilangan berat mengalami penurunan dengan ditambahnya kadar getah karet. Sedangkan nilai titik lembek, titik nyala, dan kehilangan berat mengalami peningkatan. Hal ini menunjukkan bahwa karakteristik aspal menjadi lebih keras dan diindikasi tahan terhadap deformasi tetapi rentan terhadap retak. Dari nilai pengujian disimpulkan bahwa kadar getah karet alam 5% memenuhi spesifikasi aspal modifikasi.Kata kunci: getah karet alam, aspal pen 60/70, aspal modifikasi ABSTRACTBased on Rubber Production data in Indonesia, there has been an average increasing of 1.5% for 2016-2020, where the largest production of rubber is South Sumatra Province, which is 28.77%. With the improvement and utilization efforts, research was carried out on mixing rubber sap into asphalt. The rubber sap that has been used is solid and comes from Pangkalan Balai, South Sumatra. This study aims to examine the characteristics of 60/70 pen asphalt substituted with natural rubber latex levels of 0%, 2.5%, 5%, and 7.5%. The test refers to SE Menteri PUPR No 04/SE/M/2019. The test results have shown the value of penetration, ductility, specific gravity, viscosity of 135° C, solubility in TCE, TFOT, penetration and ductility after weight loss has decreased with the addition of rubber sap content. Meanwhile, the values for softening point, flash point, and weight loss increased. This indicates that the characteristics of the asphalt become tougher and indicate that it is resistant to deformation but is prone to cracking. Judging from the test value, it can be concluded that the 5% natural rubber latex content meets the specifications of asphalt modification.Keywords: natural rubber, asphalt pen 60/70, asphalt modification

Natural Rubber Latex and Its Effects on Some Properties of Bitumen.

2020 ◽  
Vol 13 ◽  
Author(s):  
Osei T. ◽  
Tagbor T. A. ◽  
Awudza J. A.M.
Keyword(s):  
Specific Gravity ◽  
Natural Rubber ◽  
Physical Properties ◽  
Softening Point ◽  
Asphalt Binder ◽  
Natural Rubber Latex ◽  
Rubber Latex ◽  
Point Temperature ◽  
Aging Test ◽  
Ft Ir

: In Ghana, the main binder for asphalt roads is bitumen. However there are many cases of early road deterioration resulting sometimes from effects of temperature on asphalt binder (bitumen). For this reason several studies are on-going to develop bitumen suitable for the climatic condition in the country. This study examines some physical properties such as softening point temperature, viscosity, penetration temperature and specific gravity and chemical functionalities, peak intensity and new functional group of AC 10 grade bitumen modified with natural rubber latex (L) at levels between 1-5% and 10% as well as its effect on aging at 5 and 10% blends. Standard methods of determinations of the physical properties, Fourier Transform Infra-Red Spectroscopy (FT-IR) Test and Short term aging test were employed. Results indicated that upon addition of 1% natural rubber latex, all the properties tested decrease. Further increasing the percentage of natural rubber latex decreases penetration point but the softening point temperature, specific gravity and viscosity increases. Spectroscopy analysis result revealed that there was no change in peaks intensities of the blends as compared to the conventional bitumen. Aging test results indicated a change in mass of 0.112% for 5% blend and 0.152% for 10% blend. The study has shown that natural rubber could improve some properties of bitumen andcould be used for constructing more durable roads.

scholarly journals Roles of Chitosan as Bio-Fillers in Radiation-Vulcanized Natural Rubber Latex and Hybrid Radiation and Peroxide-Vulcanized Natural Rubber Latex: Physical/Mechanical Properties under Thermal Aging and Biodegradability

Polymers ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 3940
Author(s):  
Arkarapol Thumwong ◽  
Worawat Poltabtim ◽  
Patcharaporn Kerdsang ◽  
Kiadtisak Saenboonruang
Keyword(s):  
Weight Loss ◽  
Natural Rubber ◽  
Gamma Irradiation ◽  
Thermal Aging ◽  
Color Change ◽  
Color Space ◽  
Natural Rubber Latex ◽  
Tensile Modulus ◽  
Rubber Latex ◽  
Environmental Friendliness

Although natural rubber was regarded as biodegradable, the degradation is a time-consuming process that could take weeks or months for any degradation or substantial weight loss to be observable, resulting in the need for novel processes/methods to accelerate the rubber degradation. As a result, this work investigated the potential utilization of chitosan (CS) as a biodegradation enhancer for radiation-vulcanized natural rubber latex (R-VNRL) and hybrid radiation and peroxide-vulcanized natural rubber latex (RP-VNRL) composites, with varying CS contents (0, 2, 4, or 6 phr). The R-VNRL samples were prepared using 15 kGy gamma irradiation, while the RP-VNRL samples were prepared using a combination of 0.1 phr tert-butyl hydroperoxide (t-BHPO) and 10 kGy gamma irradiation. The properties investigated were biodegradability in the soil and the morphological, chemical, mechanical, and physical properties, both before and after undergoing thermal aging. The results indicated that the biodegradability of both the R-VNRL and RP-VNRL composites was enhanced with the addition of CS, as evidenced by increases in the percentage weight loss (% weight loss) after being buried in soil for 8 weeks from 6.5 ± 0.1% and 6.4 ± 0.1% in a pristine R-VNRL and RP-VNRL samples, respectively, to 10.5 ± 0.1% and 10.2 ± 0.1% in 6-pph CS/R-VNRL and 6-pph CS/RP-VNRL composites, respectively, indicating the biodegradation enhancement of approximately 60%. In addition, the results revealed that the addition of CS could increase the value of tensile modulus by 119%, while decrease the values of tensile strength and elongation at break by 50% and 43%, respectively, in the specimens containing 6-phr CS. In terms of the color appearances, the samples were lighter and yellower after the addition of CS, as evidenced by the noticeably increased L* and b* values, based on the CIE L*a*b* color space system. Furthermore, the investigation into the effects of thermal aging showed that the overall tensile properties for both curing systems were reduced, while varying degrees of color change were observed, with the pristine R-VNRL and RP-VNRL samples having more pronounced degradation/changes for both properties. In conclusion, the overall results suggested that CS had great potential to be applied as a bio-filler in R-VNRL and RP-VNRL composites to effectively promote the biodegradability, environmental friendliness, and resistance to thermal degradation of the composites.

Optimisation of Tensile Strength and Weight Loss via Taguchi and Response Surface Method for Natural Rubber Latex Film Consisting Cassava Peel as a Bio-Based Filler

2021 ◽  
Vol 02 (01) ◽  
Author(s):  
Mahiratul Husna Mustaffar ◽  
◽  
Aliff Hisyam A. Razak ◽  
Keyword(s):  
Mechanical Properties ◽  
Weight Loss ◽  
Tensile Strength ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Rubber Latex ◽  
Synthetic Rubber ◽  
Surface Method ◽  
Prepared Composite ◽  
Cassava Peel

Disposal latex and synthetic rubber gloves is troublesome such that disposal via incineration and land fill may release poisonous gasses and contaminate soil and water, respectively. As solution to latex and synthetic rubber, biodegradable glove is extensively studied. A bio-based filler is extracted from food waste and blended into natural rubber latex (NRL) as a composite NRL. The effect of biodegradability of composite NRL was studied by varying the loading of bio-based filler in a form of starch dispersion and blended into NRL mixture. Herein some amount of starch can be extracted from cassava peel to be incorporated in NRL for a sustainable and yet biodegradable glove. Previous work on incorporation of cassava-peel filler in NRL has shown a biodegradability without compromising the pristine strength of NRL film at 50% loading starch. In this project, tensile strength and weight loss of prepared composite NRL films were optimised via Taguchi and Response Surface Method (RSM) by means of Design Expert software by varying starch/filler loading, curing temperature and curing drying duration. Due to inadequate data, the optimisation from that previous prepared composite NRL was compared with similar work which utilising NRL and bio-based filler. For Pulungan (2020) study, it can be concluded that the tensile strength of cassava peel starch biodegradable film has the best condition at 50°C to 60°C at approximately 5.5 hours. Elongation optimum conditions shows contrast value of temperature and time. Meanwhile, for Wendy (2020) study, it shows the best percentage loading of cassava-peel starch is at 20% to achieve high stress and strain at break. The optimised mechanical properties via Taguchi and RSM are rather different and hence validation on mechanical properties at above mentioned conditions need to be performed experimentally.

scholarly journals PENGARUH BIODEGRADASI DENGAN TEKNIK PENANAMAN TERHADAP PRODUK LATEKS KARET ALAM BERPENGISI TEPUNG KULIT PISANG YANG DIPUTIHKAN DENGAN HIDROGEN PEROKSIDA

2012 ◽  
Vol 1 (2) ◽  
pp. 11-15
Author(s):  
Erick Kamil ◽  
Emelya Khoesoema ◽  
Hamidah Harahap
Keyword(s):  
Weight Loss ◽  
Fourier Transform ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
The Other ◽  
Rubber Latex ◽  
Soil Burial ◽  
Loss Calculation ◽  
Structure Changes ◽  
Npk Fertilizer

Natural rubber latex products filled with bleached banana skin powder were identified by burying samples in soil. Soil burial was carried out by adding NPK fertilizer and without fertilizer. One of the tests which was carried out was weight loss calculation. Weight loss calculation showed that natural rubber latex products filled with bleached banana skin powder biodegraded faster than natural rubber latex products without filler. The addition of fertilizer also contributed to biodegradability of samples. The other test was FTIR (Fourier Transform Infrared Spectroscopy) test. The results of FTIR test showed there were structure changes in natural rubber latex which indicated natural rubber latex had been biodegraded.

The Modification of Asphalt Emulsion Using Pre-Vulcanized Natural Rubber Latex for Highway Application

2010 ◽  
Vol 93-94 ◽  
pp. 639-642 ◽  
Author(s):  
Saovaros Malithong ◽  
Chanchai Thongpin
Keyword(s):  
Natural Rubber ◽  
Softening Point ◽  
Fire Hazard ◽  
Natural Rubber Latex ◽  
Optical Microscope ◽  
Asphalt Emulsion ◽  
Rubber Latex ◽  
Modified Asphalt ◽  
Swell Ratio ◽  
Asphalt Emulsions

Asphalt emulsion is manufactured by emulsification of asphalt, and it is an energy-saving, ecologically safe material because it does not need any heating processes which can emit gas and fire hazard in its use. The purpose of this study is to elucidate the feasibility on using pre-vulcanized natural rubber latex as an admixture for asphalt emulsion in order to improve thermal stability and useful mechanical properties of the asphalt emulsion. The crosslink density was determined by swell ratio. The effect of vulcanizing agent on residue properties of modified asphalt emulsions was studied. The morphology properties of the modified asphalt were also investigated by using an optical microscope. The results showed that asphalt emulsion which was modified using pre-vulcanized NR latex could provide a standard asphalt emulsion and applicable for highway construction application. The mechanical and physical properties of the dried asphalt emulsion were also very well modified by the vulcanized rubber phase. The residue properties of modified asphalt with natural rubber and pre-vulcanized natural rubber latex, including softening point and penetration was improved. The increase in vulcanizing agent could also increase softening point. At low polymer contents, the samples reveal the existence of dispersed polymer particles in a continuous bitumen phase, whereas at high polymer contents a continuous polymer phase was observed.

scholarly journals PENGARUH PENCUACAAN ALAMI TERHADAP PRODUK LATEKS KARET ALAM BERPENGISI TEPUNG KULIT PISANG YANG DIPUTIHKAN DENGAN HIDROGEN PEROKSIDA

2012 ◽  
Vol 1 (2) ◽  
pp. 16-20
Author(s):  
Emelya Khoesoema ◽  
Erick Kamil ◽  
Hamidah Harahap
Keyword(s):  
Hydrogen Peroxide ◽  
Weight Loss ◽  
Natural Rubber ◽  
Oxidation Process ◽  
Natural Rubber Latex ◽  
Filler Loading ◽  
Rubber Latex ◽  
Photo Oxidation ◽  
Powder Filler ◽  
Sun Light

The effect of exposing bleached banana skin powder-filled natural rubber products to sun light and weather with variation of bleached banana skin powder filler loading. Banana skin powder was dried and bleached with hydrogen peroxide and made into disperse system. Natural rubber latex was compounded with bleached banana skin powder with filler loading of 0 to 20 phr (per hundred rubber). Natural rubber latex products, which were produced, were hung in air and exposed to sun light and weather. The degradation of bleached banana skin powder-filled natural rubber products were evaluated by calculating weight loss of samples and performing Fourier transform infrared spectroscopy (FTIR) test. Natural rubber latex lost weight after exposure to sun light and weather from 1 to 16 weeks due to photo-oxidation process.

scholarly journals PENGARUH PERLAKUAN LEACHING TERHADAP SIFAT MEKANIK FILM LATEKS KARET ALAM BERPENGISI SELULOSA MIKROKRISTAL DARI AMPAS TEBU

2017 ◽  
Vol 5 (4) ◽  
pp. 46-52
Author(s):  
Rismadhani Elita ◽  
Rojiyatul Ikhwani Lubis ◽  
Hamidah Harahap
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Natural Rubber ◽  
Microcrystalline Cellulose ◽  
Natural Rubber Latex ◽  
Latex Film ◽  
Test Results ◽  
Rubber Latex ◽  
Different Temperatures ◽  
Vulcanization Process

Leaching process is one of many factors to raise up the mechanical properties of latex products. Studies on the effect of leaching on film natural rubber latex with the filler microcrystalline cellulose from bagasse with alkanolamide using different temperatures and times vulcanization has been done to produce the better mechanical properties such as strenght tensile and elongation at break. Filming of natural rubber latex is done by coagulants dyeing techniques. The study started with the process of pre-vulcanised natural rubber latex at 70 °C with a loading filler by 0 phr, 5 phr, 10 phr and 15 phr and followed by a vulcanization process at a temperature of 100 °C and 150 °C for 10 minutes and 20 minutes. The film result will be have leaching treatment using a solution of water and ammonia 1%. Test results of tensile strength of natural rubber latex film howed that the tensile strength of natural rubber latex film with microcrystalline cellulose as filler and alkanolamides after leaching less than the tensile strength of natural rubber lateks film before leaching

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