scholarly journals The Effect of Stocking Temperature on Biodegradable Plastic Characteristics of Suweg Tuber (Amorphophallus campanulatus) with Addition of Glycerol and CMC (Carboxy Methyl Cellulose)

2019 ◽  
Vol 2 ◽  
pp. 207-212
Author(s):  
Layung Sari ◽  
Endaruji Sedyadi ◽  
Irwan Nugraha ◽  
Didik Krisdiyanto
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Temperature Variation ◽  
Methyl Cellulose ◽  
Biodegradable Plastics ◽  
Biodegradable Plastic ◽  
Basic Material ◽  
Carboxy Methyl Cellulose ◽  
Temperature Variations ◽  
Carboxy Methyl

Research that uses Suweg tubers as the basic material for making biodegradable plastics has been carried out.. This research aims to determine the effect of stirring temperature on the characteristics of biodegradable plastic. Suweg tuber starch preparation is done as the manufacture of biodegradable plastic. Manufacture of biodegradable plastics made by mixing suweg tuber starch, glycerol, and acetic acid, as well as the CMC (Carboxy Methyl Cellulose). The manufacture of biodegradable plastic is carried out in two stages, namely stirring temperature variations (80⁰C, 85⁰C, 90⁰C, and 95⁰C) and the addition of CMC (Carboxy Methyl Cellulose). Tests carried out include FTIR test, mechanical test and biodegradation test. FTIR test is carried out to determine the functional groups contained in plasticThe test of plastic mechanical properties was carried out to determine the mechanical properties of plastics, such as tensile strength, elongation, and thickness. Biodegradation tests are carried out on the ground to determine the level of plastic degradation while in the environment. The results showed that the effect of temperature affected the mechanical properties of biodegradable plastic produced. Mechanical tests of stirring temperature variations with the addition of glycerol resulted in tensile strength, elongation, and thickness values of 80⁰C at 10.43 MPa; 2.08%; 85⁰C at 28.52 MPa; 1.60%, 90⁰C of 29.76 MPa; 2.18%, and 95⁰C of 32.49 MPa; 2.05%. These results can be seen that the largest biodegradable plastic tensile strength is found in temperature variations of 95⁰C, with a tensile strength of 32.49 MPa elongation 2.05%, and a thickness of 0.12 mm.. Mechanical properties test of temperature variation with the addition of glycerol and CMC resulted in the value of tensile strength, elongation, and temperature thickness of 80⁰C at 18.68 Mpa; 12.22%, 85⁰C equal to 14.69 MPa; 9.16%, 90⁰C of 16.71 MPa; 14.72%, 95⁰C of 13.94 MPa; 14.166%. These results can be seen that the largest biodegradable plastic tensile strength is found at 80⁰C temperature variations of 18.68 MPa, 12.22% elongation, 0.14 mm thickness. FTIR test, the biodegradable plastic produced, it is known that the plastic group produced is like CH, ester or ether. Plastic bio degradation test on soil, plastic with a temperature variation of 95⁰C has been degraded after 8 days, while plastic with the addition of CMC is degraded faster, for 7 days.

scholarly journals The Performance and Characterization of Biodegradable Plastic from Tapioca Starch: Effect of Modified Chitosan

2020 ◽  
Vol 15 (1) ◽  
pp. 45-52
Author(s):  
Lia Ernita ◽  
Medyan Riza ◽  
Syaubari Syaubari
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Water Absorption ◽  
Thin Sheet ◽  
Biodegradable Plastics ◽  
Biodegradable Plastic ◽  
Tapioca Starch ◽  
Modified Chitosan

The performance and characterization of biodegradable plastic from tapioca starch was studied. Modified the chitosan was one of the ingredients for produce  the biodegradable plastics. The produced biodegradable polastic were thin sheet plastic, elastic and transparent. The biodegradable plastic performance had tensile strength between 2,26-3.73 Mpa, elongation ranges from 17.24 to 76.76%, and water absorption ranges from 30.81-268.9%. In antioxidant analyze, apples are wrapped in plastic and had significant mechanical properties changes on 8th day.Morphology scanning result showed that in the chitosan-polyNIPAM there were no cavities may caused high hydrophilicity in the biodegradable plastic.

Slip velocity and temperature jump of a non-Newtonian nanofluid, aqueous solution of carboxy-methyl cellulose/aluminum oxide nanoparticles, through a microtube

2019 ◽  
Vol 29 (5) ◽  
pp. 1606-1628 ◽  
Author(s):  
Marjan Goodarzi ◽  
Saeed Javid ◽  
Ali Sajadifar ◽  
Mehdi Nojoomizadeh ◽  
Seyed Hossein Motaharipour ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Aqueous Solution ◽  
Aluminum Oxide ◽  
Temperature Jump ◽  
Methyl Cellulose ◽  
Oxide Nanoparticles ◽  
Carboxy Methyl Cellulose ◽  
Aluminum Oxide Nanoparticles ◽  
Content Type ◽  
Carboxy Methyl

Purpose With respect to two new subjects, i.e. nanofluids and microchannels, in heat transfer systems and modern techniques used for building them, this paper aims to study on effect of using aluminum oxide nanoparticles in non-Newtonian fluid of aqueous solution of carboxy-methyl cellulose in microtube and through application of different slip coefficients to achieve various qualities on surface of microtube. Design/methodology/approach Simultaneously, the effect of presence of nanoparticles and phenomenon of slip and temperature jump has been explored in non-Newtonian nanofluid in this essay. The assumption of homogeneity of nanofluid and fixed temperature of wall in microtube has been used in modeling processes. Findings The results have been presented as diagrams of velocity, temperature and Nusselt Number and the investigations have indicated that addition of nanoparticles to the base fluid and increase in microtube slip coefficient might improve rate of heat transfer in microtube. Originality/value The flow of non-Newtonian nanofluid of aqueous solution of carboxy methyl cellulose-aluminum oxide has been determined in a microtube for the first time.

scholarly journals Isolasi Dan Karakteristik Fungi Lignoselulolitik Dari Limbah Sawit Sebagai Agen Pendegradasi Pakan Berserat

2019 ◽  
Vol 12 (2) ◽  
pp. 39-48
Author(s):  
Yunilas Yunilas ◽  
Lili Warly ◽  
Yetti Marlida ◽  
Irsan Ryanto
Keyword(s):  
Methyl Cellulose ◽  
Selective Medium ◽  
High Ability ◽  
Carboxy Methyl Cellulose ◽  
Fiber Degradation ◽  
Trichoderma Sp ◽  
Colony Color ◽  
Degradation Test ◽  
Palm Waste ◽  
Carboxy Methyl

Abstrak. Penelitian ini bertujuan untuk mengisolasi dan mengkarakteristik fungi lignoselulolitik dari limbah sawit sebagai pendegradasi serat (senyawa polisakarida). Penelitian ini menggunakan metode eksplorasi melalui isolasi, karakteristik, uji degradasi lignoselulosa dan identifikasi. Isolasi menggunakan medium selektif yang dimodifikasi mengandung carboxy methyl cellulose (CMC), xylan, lignin dan manan. Dari hasil isolasi diperoleh 16 isolat fungi lignoselulolitik dan 4 diantaranya memiliki kemampuan tinggi dalam mendegradasi lignoselulosa yaitu isolate fungi YLF2, YLF3, YLF4 dan YLF8. Isolat fungi yang diperoleh memiliki karakteristik yang bervariasi meliputi bentuk, permukaan, tepi dan warna koloni. Hasil uji degradasi (hidrolitik) menunjukkan bahwa isolat fungi YLF8 menghasilkan indeks hidrolitik lebih tinggi dibanding fungi lainnya. Berdasarkan hasil dapat disimpulkan bahwa isolat fungi YLF8 termasuk pada strain Trichoderma sp berpotensi sebagai isolat pendegradasi serat dan dapat digunakan sebagai bioktivator dalam fermentasi pakan berserat.Isolation And Characteristic Of Lignocellulolitic Fungi Of Palm Waste As a Fiber Feed Degrading AgentAbstract. This study aims to isolate and characterize lignocellulolytic fungi from palm wastes as fiber degradation (polysaccharide compounds). This research uses exploration method through isolation, characteristic, lignocellulosic degradation test and identification. Isolation using modified selective medium contains carboxy methyl cellulose (CMC), xylan, lignin and manan. From isolation result obtained 16 isolates of lignocellulolytic fungi and 4 of them have high ability in degrading lignocellulose that is fungi YLF2, YLF3, YLF4 and YLF8. The obtained fungi isolates have varying characteristics including shape, surface, edges and colony color. The result of degradation test (hydrolytic) showed that YLF8 fungi isolates yielded higher hydrolytic index than other fungi. Based on the results it can be concluded that the isolates of YLF8 fungi belong to the Trichoderma sp strain potentially as fiber degrading isolates and can be used as bioctivators in fibrous fermentation feed. 

scholarly journals HEPATOPROTECTIVE ACTIVITY OF VERNONIA AMYGDALINA LEAF ETHANOLIC EXTRACT IN WHITE RATS INDUCED BY PARACETAMOL

2018 ◽  
Vol 11 (10) ◽  
pp. 562
Author(s):  
Panal Sitorus ◽  
Nerdy Nerdy
Keyword(s):  
Body Weight ◽  
Methyl Cellulose ◽  
Ethanolic Extract ◽  
Scientific Data ◽  
Control Group ◽  
Carboxy Methyl Cellulose ◽  
Vernonia Amygdalina ◽  
White Rats ◽  
Significant Difference ◽  
Carboxy Methyl

Objectives: A study on the hepatoprotective effect of Vernonia amygdalina leaves ethanolic extract on white rats induced by paracetamol was aimed to obtaining scientific data and evidence the hepatoprotective ability of the extract.Methods: The research was a complete randomized design, using 36 white rats which were divided into 6 groups. The normal control group was given 1% carboxy methyl cellulose for 7 days and followed by distilled water 8 hours after treatment. The positive control group was given 100 mg curcumin per kg body weight of rats for 7 days and followed by 2.5 g paracetamol per kg body weight after treatment. The negative control group was given 1% carboxy methyl cellulose for 7 days and followed by 2.5 g paracetamol per kg body weight after treatment. The test group was given 50, 100 and 200 mg extract per kg body weight of rats for 7 days and followed by 2.5 g paracetamol per kg body weight after treatment. Blood sampling was carried out 3 times (before treatment, after treatment and after induction).Results: With doses of 50, 100, and 200 mg extract per kg body weight of rats give significant difference on the decrease of Serum Glutamic Oxaloacetic Transaminase (SGOT) and Serum Glutamic Pyruvic Transaminase (SGPT) levels after paracetamol administration.Conclusions: It can be concluded that Vernonia amygdalina leaves ethanolic extract were potentially hepatoprotective.

Addition of methyl cellulose enema to double-contrast barium imaging of sigmoid diverticulosis

1997 ◽  
Vol 38 (1) ◽  
pp. 73-75 ◽  
Author(s):  
R. Olsson ◽  
I. Adnerhill ◽  
P. Björkdahl ◽  
O. Ekberg ◽  
F. T. Fork
Keyword(s):  
Diagnostic Imaging ◽  
Barium Enema ◽  
Methyl Cellulose ◽  
Lumen Diameter ◽  
Carboxy Methyl Cellulose ◽  
Double Contrast ◽  
Double Contrast Barium Enema ◽  
Carboxy Methyl

Double-contrast barium enema has a reduced sensitivity in patients with severe sigmoid diverticulosis. Therefore a carboxy methyl cellulose enema was employed after the conventional double-contrast examination in 15 patients with sigmoid diverticulosis. A significant increase in lumen diameter and a superior removal of barium residue from the diverticulas facilitated the interpretation of the sigmoid loops. Conclusion: The addition of methyl cellulose enema to double-contrast barium imaging improves diagnostic imaging in diverticulosis by expanding the lumen and emptying the diverticulas.

A Study on the Effect of the Temperature on Mechanical Properties of H90 Copper Strip

2019 ◽  
Vol 950 ◽  
pp. 65-69
Author(s):  
Sun Fei ◽  
Xu Cheng
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Yield Strength ◽  
Effect Of Temperature ◽  
Basic Material ◽  
Copper Strip ◽  
Study Results ◽  
Different Temperatures ◽  
Strip Test

In order to study the effect of temperature on the mechanical properties of H90 copper strip material, the H90 copper strip test pieces were heated to different temperatures (20~600 °C) for tensile test; the yield strength, tensile strength, elastic modulus and elongation of H90 copper strip at different temperatures were obtained. Based on the test results, the empirical models of yield strength, tensile strength, elastic modulus of H90 copper strip at high temperature were established; the test showed that, with the increase of temperature, the yield strength, tensile strength and elastic modulus of H90 copper strip decreased greatly, and the elongation after fracture first increased-decreased-increased at 20~600 °C. The study results in this paper provide basic material data for analyzing the effect of temperature on the continuous firing of firearms and other weapons.

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