Effect of Plasticizers on the Physicochemical properties of Bioplastic Extracted from Banana Peels

Plasticizers are the binding substances used to increase the elasticity of materials. In this research work, bioplastic is extracted from banana peels using various plasticizers such as, glycerol, urea, distilled water and glucose. The prepared bioplastics were characterized by using Fourier-transform infrared spectroscopy (FTIR) spectroscopic analysis which showed that the peak at 3355 cm-1 indicate the H-bonding formation between N-H urea and starch. The physicochemical properties such as water absorption test, soil decomposition and load test of synthesized bioplastics were analyzed at ambient temperature. The water uptake analysis showed that bioplastic absorbs water for up to 4 days without being decay. The load test showed that urea plasticized bioplastic has a high tensile strength of 2.3 KPa. The result revealed that the bioplastic with glucose as a plasticizer showed the effective result in water uptake and soil decomposition test whereas the urea plasticized bioplastic showed relatively good tensile strength.

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MAG Welding of Structures Used in Means of Transport and Made of Steel DOCOL 1200M

Biuletyn Instytutu Spawalnictwa ◽

10.17729/ebis.2020.4/6 ◽

2020 ◽

pp. 65-71

Author(s):

Bożena Szczucka-Lasota ◽

Tomasz Węgrzyn ◽

Bogusław Łazarz ◽

Adam Jurek ◽

Krzysztof Ireneusz Wilczyński

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Research Work ◽

Welding Parameters ◽

Shielding Gases ◽

High Tensile Strength ◽

Moving Platform ◽

Interpass Temperature ◽

Made In

Steels of the DOCOL group, characterised by high tensile strength and yield point, play an important role in the manufacturing of means of transport. However, the above-named steels are difficult to weld and joints made in them do not guarantee comparable mechanical properties. The research work discussed in the article aimed to determine process parameters suitable for the welding of a moving platform made of steel DOCOL 1200M as well as to assess the effect of welding parameters on the quality of obtained joints. The tests also involved analysing the effect of shielding gases, preheating and interpass temperature on the quality of an 8 mm thick MAG welded moving platform structure.

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Innovative Coating Technology for Textile Reinforcements of Concrete Applications

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.466.167 ◽

2011 ◽

Vol 466 ◽

pp. 167-173 ◽

Cited By ~ 8

Author(s):

Michael Glowania ◽

Thomas Gries ◽

Jens Schoene ◽

Markus Schleser ◽

Uwe Reisgen

Keyword(s):

Tensile Strength ◽

Glass Fibers ◽

Research Work ◽

High Tensile Strength ◽

Textile Reinforced Concrete ◽

Coating Technology ◽

Wide Range ◽

High Bond ◽

Concrete Matrix ◽

Short Glass

In the 60ties engineers started to combine short glass fibers with a concrete matrix. Today engineers combine endless fibers with the concrete matrix. Hence, the so called textile-reinforced concrete offers more and more opportunities to manufacture consumer goods like desks or chairs and to build face elements for houses and even load-bearing structures. This revolution is only feasible because a lot of research work has been done - into textile, into concrete, into the combination and the bonding. One big challenge still is to have a high bond between the fibers and the concrete to achieve high tensile strength. At the same time the reinforcement should be flexible to open a wide range of applications. The Institut für Textiltechnik and the Welding and Joining Institute of the RWTH Aachen University have spotted an innovative coating technology to achieve both – high tensile strength and drapability for textile-reinforcements for concrete applications.

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HEMP GROWTH AND FIBRE PROCESSING POSSIBILITIES IN LATVIA

Latgale National Economy Research ◽

10.17770/lner2012vol1.4.1822 ◽

2012 ◽

Vol 1 (4) ◽

pp. 42

Author(s):

Ilze Baltiņa ◽

Zaiga Zamuška ◽

Veneranda Stramkale ◽

Guntis Strazds

Keyword(s):

Tensile Strength ◽

Agricultural Research ◽

Raw Materials ◽

Animal Health ◽

Research Work ◽

Climatic Conditions ◽

Research Centre ◽

High Tensile Strength ◽

Hemp Fibre ◽

Hemp Fibres

Use of hemp fibre is rapidly increasing in Europe. This tendency is related to carbon and glass fibre substitution with recycled and biodegradable raw materials for use in car production. Scientists and manufacturers work to obtain new composite materials where hemp fibre will be as reinforcement. Hemp fibres are light and with high tensile strength comparing with other technical fibres. Advantage – eco–friendly utilization possibilities. The research work to determine hemp fibre efficiency was carried out for two years at the Latgale Agricultural Research Centre. In this work different hemp fibre varieties were used. To determine the most suitable varieties for Latvian climatic conditions all the varieties were tested at the laboratories of Riga Technical University, Institute of Textile Material Technologies and Design. We are looking for new possibilities to make technical textile samples from different hemp fibre varieties. In cooperation with Laboratories of the Scientific Institute of Food Safety, Animal Health and Environment “BIOR” the amount of tetrahydrocannabinol (THC) in different variety cannabis plants were determined. It was concluded that amount of THC of different open–air cultivation varieties grown in Latvia is different but anyway this amount is much below the acceptable norm.

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The Residual Stress Behavior in Fatigue Process of 80kg/mm2 High Tensile Strength Steels

Journal of the Society of Materials Science Japan ◽

10.2472/jsms.16.926 ◽

1967 ◽

Vol 16 (171) ◽

pp. 926-930

Author(s):

Fumiaki KANZAKI ◽

Nozomu NAWATA ◽

Hajime KITAGAWA

Keyword(s):

Residual Stress ◽

Tensile Strength ◽

High Tensile Strength ◽

Fatigue Process ◽

Stress Behavior

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LUCEFIN GROUP C30 (1.0528), C30E (1.1178), C30R (1.1179)

Alloy Digest ◽

10.31399/asm.ad.cs0206 ◽

2020 ◽

Vol 69 (9) ◽

Keyword(s):

Tensile Strength ◽

Physical Properties ◽

Tensile Properties ◽

Heat Treating ◽

High Tensile Strength ◽

Medium Carbon ◽

Alloy Steels ◽

Cold Worked ◽

Lower Carbon

Abstract Lucefin Group C30, C30E, and C30R are medium-carbon, non-alloy steels that are used in the normalized, cold worked, or quenched and tempered condition. C30E and C30R may also be flame or induction hardened. C30, C30E, and C30R are widely used for small, moderately stressed parts, where higher strength levels are needed than can be achieved in the lower carbon grades, and also where toughness is more important than high tensile strength. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: CS-206. Producer or source: Lucefin S.p.A.

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VASCO 9-4-20

Alloy Digest ◽

10.31399/asm.ad.sa0489 ◽

1997 ◽

Vol 46 (10) ◽

Keyword(s):

Fracture Toughness ◽

Tensile Strength ◽

High Temperature ◽

Ultimate Tensile Strength ◽

Physical Properties ◽

Tensile Properties ◽

Heat Treating ◽

High Tensile Strength ◽

Temperature Performance

Abstract Vasco 9-4-20 (0.20 wt% C) is a premium quality aircraft steel that combines high tensile strength with good fracture toughness. It is a heat-treatable alloy capable of developing an ultimate tensile strength greater than 190 ksi. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as heat treating, machining, and joining. Filing Code: SA-489. Producer or source: Vasco, An Allegheny Teledyne Company.

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NJZ ALLOY No. 55

Alloy Digest ◽

10.31399/asm.ad.zn0030 ◽

1976 ◽

Vol 25 (12) ◽

Keyword(s):

Tensile Strength ◽

Corrosion Resistance ◽

New Jersey ◽

Physical Properties ◽

Tensile Properties ◽

Heat Treating ◽

High Tensile Strength ◽

High Stiffness ◽

Zinc Cadmium ◽

Forming Characteristics

Abstract NJZ Alloy No. 55 is a zinc-cadmium alloy characterized by high tensile strength and hardness but low ductility. It has high stiffness and resiliency but low drawing and forming characteristics. Its applications include hardware and medallions. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep and fatigue. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: Zn-30. Producer or source: New Jersey Zinc Company.

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Influence of Physicochemical Properties and Parent Material on Chromium Fractionation in Soils

Processes ◽

10.3390/pr9061073 ◽

2021 ◽

Vol 9 (6) ◽

pp. 1073

Author(s):

Claudia Campillo-Cora ◽

Laura Rodríguez-González ◽

Manuel Arias-Estévez ◽

David Fernández-Calviño ◽

Diego Soto-Gómez

Keyword(s):

Physicochemical Properties ◽

Contaminated Soils ◽

Research Work ◽

Parent Material ◽

The Other ◽

Oxidation States ◽

Diethylenetriaminepentaacetic Acid ◽

Remediation Strategies ◽

Exchangeable Aluminum ◽

Efficient Extraction

Chromium is an element that possess several oxidation states and can easily pass from one to another, so its behavior in soils is very complex. For this reason, determining its fate in the environment can be difficult. In this research work we tried to determine which factors affect the chromium fractionation in natural soils, conditioning chromium mobility. We paid special attention to the parent material. For this purpose, extraction experiments were carried out on spiked soils incubated for 50–60 days, using H2O, CaCl2 and diethylenetriaminepentaacetic acid (DTPA). The most efficient extraction rate in all soils was achieved using water, followed by CaCl2 and DTPA. We obtained models with an adjusted R2 of 0.8097, 0.8471 and 0.7509 for the H2O Cr, CaCl2 Cr and DTPA Cr respectively. All models were influenced by the amount of chromium added and the parent material: amphibolite and granite influenced the amount of H2O Cr extracted, and schist affected the other two fractions (CaCl2 and DTPA). Soil texture also played an important role in the chromium extraction, as well as the amounts of exchangeable aluminum and magnesium, and the bioavailable phosphorus. We concluded that it is possible to make relatively accurate predictions of the behavior of the different Cr fractions studied, so that optimized remediation strategies for chromium-contaminated soils can be designed on the basis of a physicochemical soil characterization.

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