scholarly journals PENGARUH PENAMBAHAN GLISEROLTERHADAP SIFAT KEKUATAN TARIK DAN PEMANJANGAN SAAT PUTUS BIOPLASTIK DARI PATI UMBI TALAS

2014 ◽  
Vol 3 (2) ◽  
pp. 19-24 ◽  
Author(s):  
Rinaldi Febrianto Sinaga ◽  
Gita Minawarisa Ginting ◽  
M. Hendra S Ginting ◽  
Rosdanelli Hasibuan
Keyword(s):  
Tensile Strength ◽  
Corn Starch ◽  
Heating Temperature ◽  
Volume Effect ◽  
Raw Material ◽  
Starch Solution ◽  
Elongation At Break ◽  
Renewable Biomass ◽  
A Value ◽  
Pea Starch

Bioplastics are a type of plastic made ​​from renewable biomass sources, such as vegetable oil, corn starch, pea starch, and microbiota. Starch from tubers of talas (Colocasia esculenta) as a  potential raw material for bioplastics by using glycerol as plastizicer. The purposes of the research are to know effect of adding glycerol to the properties of tensile strength and elongation at break bioplastic from starch taro tubers. In this research, the manufacture of bioplastics using casting methode with variations of starch solution (0,2 w/v, 0,3 w/v, and 0,4 w/v). The next additions to vary the volume of glycerol (1 % v, 2 % v, and 3 % v) and heating temperature  of gelatin formation (60oC, 70oC, and 80oC). The results showed that bioplastics made ​​from taro tuber starch has gelatinization temperature of 70oC. The addition of glycerol volume effect value of tensile strength and elongation at break of bioplastics. Increasing volume of glycerol will decrease tensile strength but increase elongation at break value. The best of bioplastics in this research is a variation of starch bioplastic 0,3 w/v, addition of 1 % v glycerol at a temperature of 70°C with a value of tensile strength is 18,4992 MPa and elongation at break value is 2,1290%.

scholarly journals The Utilization of Waste Cooking Oil (WCO) as A Mixture of Polyol Sourcein. The Production of Polyurethane Using Toluene Diisocyanate

2019 ◽  
Vol 35 (1) ◽  
pp. 221-227
Author(s):  
Maulida Lubis ◽  
Mara Bangun Harahap ◽  
Iriany Iriany ◽  
Muhammad Hendra S. Ginting ◽  
Iqbal Navissyah Lazuardi ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Waste Cooking Oil ◽  
Raw Material ◽  
Toluene Diisocyanate ◽  
Elongation At Break ◽  
Cooking Oil ◽  
A Value ◽  
Stirring Time

Cooking oil waste that has been disposed could contamine the environment. However, if it is processed well, it can potentially become a raw material of polyurethane. The aim of this study was to determine the best polyurethane on the tensile strength, impact strength, elongation at break, water absorption, characterization of Fourier Transform Infra-Red (FTIR) and the characterization of Scanning Electron Microscopy (SEM). The variables used in this study were ambient process temperature with 440 rpm stirring speed, 1-minute stirring time, the ratio of polyoland WCO was 7:3 (% w/w), and the ratio of Toluene Diisocyanate (TDI) and WCO was 1:1; 1:2; 1:3; 1:4 (% w/w). The results obtained from the analysis of the best tensile strength against the polyurethane synthetic was in the 1:1 ratio of mixed variations between oil and TDI with a value of 0.403 MPa. The best impact strength was in the ratio of mixed variations between oil and TDI with 1:4 (% w/w) with a value of 600.975 J/m2. The best elongation at break against polyurethane foam synthetic was in the 1:3 ratio of mixture variations of oil and TDI with a value of 4.506%.

scholarly journals Effect of Heating on Tensile Strength and Elongation at Break of Bioplastic from Taro Starch Filled Chitosan (Colocasia esculenta) with Glycerol Plasticizer

2021 ◽  
Vol 33 (10) ◽  
pp. 2347-2352
Author(s):  
M.H.S. Ginting ◽  
R. Hasibuan ◽  
M. Lubis ◽  
T.P. Sirait ◽  
T. Sidabudar
Keyword(s):  
Particle Size ◽  
Tensile Strength ◽  
Water Absorption ◽  
Raw Material ◽  
Ftir Analysis ◽  
Gelatinization Temperature ◽  
Casting Method ◽  
Starch Solution ◽  
Elongation At Break ◽  
Pasting Temperature

Taro starch is a potential raw material for bioplastics by adding glycerol and chitosan. The casting method is used for making bioplastics with 30%w/v starch solution. Moreover, the variation added volume of glycerol (1%, 2% and 3% v/v), addition of chitosan (1% w/v, 2%w/v and 3%w/v) and pasting temperature was 75 ºC. Taro starch with particle size 100 mesh has 93.55% starch, 17.9% amylose, 75.66% amylopectin. Analysis of plastice properties showed that taro starch has a gelatinization temperature of 74.52 ºC with high peak viscosity 5953.5 cP. FTIR analysis show bands due to presence of O-H, C-H, C=H, C-O-H and C-O. The best of bioplastic in this study was 30% w/v on starch, 1% v/v glycerol and 2% w/v chitosan at 75 ºC produces 42.86% water absorption, 8.297 MPa tensile strength and elongation at break was 45.846%.

scholarly journals The effect solvent type on natural fiber immersion process on tensile strength of cellulose-based bioplastic

2021 ◽  
Vol 912 (1) ◽  
pp. 012062
Author(s):  
A Pranata ◽  
H Nasution ◽  
H Harahap ◽  
A Yustira
Keyword(s):  
Tensile Strength ◽  
Rice Straw ◽  
Trifluoroacetic Acid ◽  
Natural Fiber ◽  
Raw Materials ◽  
Raw Material ◽  
Cellulose Content ◽  
Renewable Materials ◽  
Elongation At Break ◽  
A Value

Abstract Environmental pollution caused by the use of conventional plastics is increasing. This is due to the high use of conventional plastics and the difficulty of being degraded in nature. Several studies continue to be developed to make plastics that are easily degraded in nature, namely bioplastics. Bioplastic is a type of plastic made from renewable materials and can be decomposed in nature with the help of microorganisms. The manufacture of bioplastics is done by dissolving raw materials such as rice straw, sugarcane bagasse, cocoa husks, and tea waste into various solvents, namely trifluoroacetic acid (TFA), N, N-dimethylformamine (DMF), trifluoroacetic acid anhydride (TFAn), and citric acid. The resulting bioplastics were analyzed for tensile strength and elongation at break. The results showed that the use of rice straw as a raw material in the manufacture of bioplastics showed good results where the composition of the high cellulose content of rice straw was 61.8% and the tensile strength that had met SNI was 43 MPa using trifluoroacetic acid (TFA) as a solvent. However, a good elongation at break was produced by cocoa husks with a value of 28% using trifluoroacetic acid (TFA) and trifluoroacetic anhydride (TFAn) as solvents.

scholarly journals The investigation of producing bacterial cellulose fibres through hand-spun

2019 ◽  
Vol 131 ◽  
pp. 01052
Author(s):  
Yu Wang
Keyword(s):  
Tensile Strength ◽  
Bacterial Cellulose ◽  
Young’S Modulus ◽  
Filter Cake ◽  
Young's Modulus ◽  
Raw Material ◽  
Cellulose Fibres ◽  
Elongation At Break ◽  
Intermediate States

Nanocellulose fibres can be hand-spun from different intermediate states, such as nanocellulose paper and filter cake, which are made from the BC suspension as well as wet pellicle (WP) and dry pellicle (DP) from BC pellicles. In this study, it can be concluded that increasing the hanging weight can increase the Young’s modulus and the tensile strength of fibres. Nanofibres produced from BC pellicles as raw material have better performance than those made from BC suspension. The best properties obtained from the fibres produced from wet pellicles and suspended to a 100g hanging weight upon drying are Young’s modulus (33.8 GPa), tensile strength (610 MPa) and elongation at break (3.6%).

Effect of Co60γ Ray Irradiation on Thermoplastic Corn Starch Plastic

2013 ◽  
Vol 772 ◽  
pp. 34-37
Author(s):  
Hao Tang ◽  
Hai Tian Jiang ◽  
Bin Guo ◽  
Pan Xin Li
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Corn Starch ◽  
Irradiation Time ◽  
Thermoplastic Starch ◽  
Endothermic Peak ◽  
Macromolecular Structure ◽  
Thermal And Mechanical Properties ◽  
Elongation At Break ◽  
Γ Ray

Corn starch was irradiated by 60Coγ ray, and then the thermoplastic starch plastic (TPS) was prepared by adding glycerol. Microstructure, thermal and mechanical properties of the corn starch and starch plastic were studied in details by FTIR, DSC and SEM. Results showed that the starch macromolecular structure was damaged by irradiation, and with increased irradiation time, the temperature of melt endothermic peak and tensile strength decreased, elongation at break increases for starch plastic, the thermoplastic property of starch was enhanced obviously.

scholarly journals Preparation and Characterization of Conductive Plastics Using Cassava Peel Waste and Addition of CuSO4

2020 ◽  
Vol 2 (1) ◽  
pp. 34-41
Author(s):  
Syahrul Humaidi
Keyword(s):  
Tensile Strength ◽  
Thermal Testing ◽  
Elongation At Break ◽  
Thermal Test ◽  
A Value ◽  
Root Starch ◽  
Starch Composition ◽  
Conductive Plastics ◽  
Cassava Peel

This study investigated the characteristics of a conductive plastic based on root starch and CuSO4 filler. The mixture variation was (95:5)%; (90:10)%; (85:15)%; (80:20)% and (75:25)%. Glycerol is used to change the material as desired (plasticizer) which is called a plasticizer. The method used in the manufacture of this material is melt intercalation. Mechanical testing includes tensile strength (tensile strength) and elongation at break. Thermal testing was done using DTA (Differential Thermal Analysis) and material conductivity testing. The characterization results showed that the optimum starch composition: CuSO4 (75:25)% had a conductivity value of 7.3 x 10-2S.m-1, a thermal test value of 410ºC. The optimum tensile strength value occurs in the composition (80:20)% with a value of 4.606 MPa

scholarly journals The Study of Process and Characteristics of Woven Fabric from Plant Fibers of Lidah Mertua (Sansevieria trifasciata P.)

2019 ◽  
Vol 7 (2) ◽  
pp. 207-220 ◽  
Author(s):  
Lisa Oktavia Br Napitupulu ◽  
Asri Widyasanti ◽  
Ahmad Thoriq ◽  
Asep Yusuf
Keyword(s):  
Tensile Strength ◽  
Textile Industry ◽  
Natural Fibers ◽  
Woven Fabrics ◽  
Raw Material ◽  
Woven Fabric ◽  
Plant Fibers ◽  
Weft Direction ◽  
A Value ◽  
Descriptive Method

Sansevieria or known as tongue-in-law plant is an ornamental plant that is quite popular in Indonesia. This plant is very easily cultivated, easy to grow in areas with less water and sunlight. This plant contains potential natural fibers used as raw material requirements for textile industry, specifically in fabric making. The aims of this research were to determine the production process consisting and analyzing the characteristics of woven fabrics from the leaves of the tongue-in-law plant. The method of fibers extraction used the mechanical decortication process and making woven fabric is done using ATBM. The research method used is descriptive method. Based on the results of the study, it is known that the woven cloth of tongue-in-law has color characteristics with a value of L* 69.73; a* 1.86; b* 17,38; H 83,88. Besides that, it is known the mechanical characteristics of the tongue-in-law woven fabric, the tensile strength of the fabric, the weft  direction of 46.05 kg and the warp direction of 19.96 kg; weft direction stretch 22% and stretch direction of the warp of 55.20%; weft direction tear strength 19.17% and wrap direction 4.60%; and air penetrating power 116.2 cm3/cm2/s.The value of the tensile strength of the tongue-in-law woven fabric produced in the warp direction does not meet the standards of SNI 08-0056-2006 woven fabric quality requirements for suit.Therefore, woven fabric produced is intended as a craft material.

The Vulcanization of Styrene-Butadiene Rubber with 2-Pentadecyl-Benzoquinone Dioxime

1979 ◽  
Vol 52 (2) ◽  
pp. 353-360 ◽  
Author(s):  
N. D. Ghatge ◽  
N. N. Maldar
Keyword(s):  
Tensile Strength ◽  
Raw Material ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Elongation At Break ◽  
Red Lead ◽  
Styrene Butadiene ◽  
Resistance To Heat ◽  
Curing Systems ◽  
Sulfur Curing

Abstract The authors propose a new active vulcanizing agent 2-pentadecylbenzo-quinone dioxime, derivable from the indigenous raw material, cashewnutshell liquid. This vulcanizing agent, when oxidized by red lead, gives styrene-butadiene vulcanizates of improved tensile strength and elongation at break, compared to vulcanizates cured by p-benzoquinone dioxime, 2-methylbenzo-quinone dioxime or standard sulfur curing systems. The new vulcanizates have much greater resistance to heat aging than the corresponding sulfur vulcanisates.

Effect of wheat straw oxidation on thermoplastic starch composites: Mechanical, thermal, and rheological process behaviors

2018 ◽  
Vol 33 (5) ◽  
pp. 646-658 ◽  
Author(s):  
Yin Peng ◽  
Dongdong Zha ◽  
Guo Bin ◽  
Li Bengang ◽  
Li Panxin
Keyword(s):  
Tensile Strength ◽  
Wheat Straw ◽  
Corn Starch ◽  
Sodium Periodate ◽  
Thermoplastic Starch ◽  
Mechanical And Thermal Properties ◽  
Elongation At Break ◽  
Torque Measurements ◽  
Natural Filler ◽  
Scanning Electron

The objective of this work is to evaluate the reinforced effect of wheat straw (WS) after oxidation in thermoplastic corn starch (TPS).The mechanical properties (tensile strength and elongation at break) of TPS and oxidized wheat straw (OWS)/TPS composites were evaluated by the tensile measurements. The composites were characterized further using scanning electron microscopy (SEM), dynamic mechanical thermal analysis, and torque measurements. In general, OWS played a key role for enhanced mechanical and thermal properties in composites, and the composites had slightly poorer rheological processing behaviors, compared to the TPS. The highest tensile strength (7.66 MPa) was achieved using WS oxidized with 0.045 mol·L−1 sodium periodate. The damage and erosion produced on WS after oxidation positively affected the properties of the composites. With respect to the findings of this study, it may be stated that OWS can be used as a promising natural filler for other composites.

scholarly journals Effect of Alkali Treatment on Structure and Properties of High Amylose Corn Starch Film

Materials ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1705 ◽  
Author(s):  
Yang Qin ◽  
Hui Zhang ◽  
Yangyong Dai ◽  
Hanxue Hou ◽  
Haizhou Dong
Keyword(s):  
Tensile Strength ◽  
Sodium Hydroxide ◽  
Corn Starch ◽  
Film Formation ◽  
Alkali Treatment ◽  
Hydroxyl Groups ◽  
Elongation At Break ◽  
Naoh Treatment ◽  
High Amylose ◽  
Starch Molecule

Alkali treatment is used for melt extrusion film formation with corn starch, but optimal conditions for this procedure are still unknown. In this study, the changes in properties and structure of high amylose corn starch (70%) films with different concentrations of sodium hydroxide (NaOH), prepared by melting extrusion, were investigated. With increasing sodium hydroxide concentrations, the tensile strength of the high-amylose starch film decreased gradually, while the elongation at break increased. The tensile strength of the high amylose starch (HAS) film with 2% NaOH-treatment was 10.03 MPa and its elongation at break was 40%. A 2% NaOH-treatment promoted the orderly rearrangement of starch molecules and formed an Eh-type crystal structure, which enlarged the spacing of the single helix structure, increased the molecular mobility of the starch, and slowed down the process of recrystallization; a 10% NaOH-treatment oxidized the hydroxyl groups of the high amylose corn starch during extrusion, formed a poly-carbonyl structure, and initiated the degradation and cross-linking of starch molecule chains.

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