scholarly journals The effect of stearic acid and different loading treated and untreated EFB fiber on the tensile, structural and chemical properties of polypropylene/recycled acrylonitrile butadiene rubber/empty fruit bunch composites

2021 ◽  
Vol 765 (1) ◽  
pp. 012037
Author(s):  
R Santiagoo ◽  
T W Hong ◽  
N Z N Azizan ◽  
A M Andrew ◽  
F Wahab ◽  
...  
Keyword(s):  
Stearic Acid ◽  
Chemical Properties ◽  
Butadiene Rubber ◽  
Empty Fruit Bunch ◽  
Acrylonitrile Butadiene Rubber ◽  
And Chemical Properties

Exploring the role of stearic acid in modified zinc aluminum layered double hydroxides and their acrylonitrile butadiene rubber nanocomposites

2014 ◽  
pp. n/a-n/a ◽  
Author(s):  
Subramani Bhagavatheswaran Eshwaran ◽  
Debdipta Basu ◽  
Sankar Raman Vaikuntam ◽  
Burak Kutlu ◽  
Sven Wiessner ◽  
...  
Keyword(s):  
Stearic Acid ◽  
Layered Double Hydroxides ◽  
Butadiene Rubber ◽  
Acrylonitrile Butadiene Rubber ◽  
Rubber Nanocomposites ◽  
Double Hydroxides

scholarly journals FORMULASI DAN UJI PELEPASAN KRIM EKSTRAK ETANOL DAUN JAMBU BIJI DENGAN POTENSI ANTIJERAWAT

Jurnal Kimia ◽  
2020 ◽  
pp. 119
Author(s):  
N. P. Y. A. Dewi ◽  
N. L. G. W. Pebriani ◽  
P. A. Duarsa ◽  
P. C. I. Warnaya ◽  
I. D. A. A. D. Candraningrat ◽  
...  
Keyword(s):  
Stearic Acid ◽  
Chemical Properties ◽  
Ethanol Extract ◽  
Physical And Chemical Properties ◽  
Guava Leaves ◽  
Guava Leaf ◽  
Optimum Formula ◽  
Physical And Chemical ◽  
Active Substances ◽  
And Chemical Properties

Guava leaves contain quercetin which can inhibit the growth of Propionibacterium acne. Thus, guava leaves have the potential to be anti-acne. Based on the benefits of guava leaves, it is necessary to formulate the ethanol extract of guava leaves in cream preparation and its characterization as well as to know the rate of releasing active substances. Preparation and standardization of guava leaf simplicia was carried out. After that, maceration, standardization and phytochemical screening of guava leaf ethanol extract were done. Positive extracts containing flavonoids were formulated into cream preparation. The concentration of stearic acid as emulgator of 14% and 18% was optimized. The formula was tested for physical and chemical properties such as organoleptic, spreadability, adhesion, viscosity and pH. The optimum formula was characterized using Franz diffusion test to determine the release of the active substance. The results showed that concentration of stearic acid as emulgator influenced the physical and chemical properties of the cream. Based on the results of this study it could be concluded that the optimum formula was stearic acid concentration of 14% with the release active substances for 3 hours of 2,5882 mg. Keywords: Guava leaves, acne, cream, stearic acid, diffusion

Thermal and mechanical properties of chemical modification on sugarcane bagasse mixed with polypropylene and recycle acrylonitrile butadiene rubber composite

2019 ◽  
Vol 33 (11) ◽  
pp. 1533-1554 ◽  
Author(s):  
Mustaffa Zainal ◽  
Ragunathan Santiagoo ◽  
Afizah Ayob ◽  
Azlinda Abdul Ghani ◽  
Wan Azani Mustafa ◽  
...  
Keyword(s):  
Chemical Modification ◽  
Tensile Properties ◽  
Sugarcane Bagasse ◽  
Chemical Properties ◽  
Infrared Analysis ◽  
Butadiene Rubber ◽  
Acrylonitrile Butadiene Rubber ◽  
Degradation Temperature ◽  
Roll Mill ◽  
Rubber Composite

The goal of this research is to investigate the thermal, chemical, and tensile properties of chemical modification of sugarcane bagasse (SCB)-filled polypropylene (PP) and recycled acrylonitrile butadiene rubber (NBRr). The composites with different SCB loading (5, 15, and 30 per hundred resin) were prepared using a heated two-roll mill at temperature of 180°C.Thermal and the tensile properties of the modified SCB composite have shown improvement. The silane-treated composites have higher thermal stability compared to treated NaOH. The degradation temperature at 70% weight ( T 70%) of NaOH and silane composite increase by 6% and 15%, respectively. Meanwhile, the tensile strength and Young’s modulus for the both treatment showed an improvement of 20% and 25% for NaOH and 30% and 32% for silane compared to untreated composites, respectively. The chemical properties were investigated using Fourier transform infrared analysis. The modification SCB fiber has improved the adhesion and interfacial bonding between SCB fiber and PP/NBRr matrices.

Effect of Fluidization Number on the Combustion of Empty Fruit Bunch in a Fluidized Bed

2015 ◽  
Vol 1125 ◽  
pp. 301-305 ◽  
Author(s):  
Anwar Johari ◽  
Tuan Amran Tuan Abdullah ◽  
Mimi Haryani Hassim ◽  
Kamarizan Kidam ◽  
Mohd Johari Kamaruddin ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Operating Temperature ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Empty Fruit Bunch ◽  
Fluidized Bed Combustion ◽  
Bed Height ◽  
Bed Temperature ◽  
Physical And Chemical ◽  
And Chemical Properties

The effect of fluidization number on the sustainability of fluidized bed combustion of empty fruit bunch was investigated. Proximate and ultimate analyses were conducted to determine the physical and chemical properties of empty fruit bunch. Sand mean particle size was determined at 0.34 mm and the sand bed height was set at 1 Dcwhich is equivalent to the diameter of the reactor. Combustion study was carried out in a circular reactor of 0.21 m diameter and operated at stoichiometric condition (Air Factor = 1). The range of fluidization numbers under investigation was from 3 to 8 Umf. The fluidized bed operated in a bubbling mode at operating temperature at about 700°C. Results showed that the most optimum fluidization number was 5 Umfbeing the most optimum with respect to the sustainability of the bed temperature.

A Comparative Analysis of Physical and Chemical Properties of Biochars and Bio-Oils Obtained from Pyrolytic Process of Mesocarp Fibre and Empty Fruit Bunch

2017 ◽  
Vol 268 ◽  
pp. 387-392
Author(s):  
Nurhayati Abdullah ◽  
Aminu Aliyu Safana ◽  
Fauziah Sulaiman ◽  
Ibrahim Inuwa Abdullahi
Keyword(s):  
Chemical Properties ◽  
Calorific Value ◽  
Raw Material ◽  
High Yield ◽  
Physical And Chemical Properties ◽  
Empty Fruit Bunch ◽  
Healthy Environment ◽  
Bio Oil ◽  
Physical And Chemical ◽  
And Chemical Properties

The fundamental objectives of this study is to analyzed and compare the physical and chemical properties of pyrolysis products (biochar and bio-oil) derived from two oil palm wastes. Empty fruit bunch (EFB) and mesocarp fibre (MF) were subjected to pyrolysis at a temperature of 400 °C for 2 hours holding time at 10 °C/min heating rate and with nitrogen flow rate of 2 L/min. The result obtained from raw material showed that MF contains a high quantity of hemicellulose and lignin which led to a high yield of bio-oil and biochar respectively, whereby, EFB contained a high content of cellulose. The high content of cellulose in EFB resulted in a high yield of gas compared to fibre. The higher heating value (HHV) of biochar and bio-oil were found to be 28.76 and 19.45 MJkg-1 for MF and, 24.33 and 19.98 MJkg-1 for EFB, respectively. Comparatively, the biochar obtained from MF material has high HHV than EFB material. However, all the biochars derived can be used for briquettes production as coal replacement in the future due to significantly high calorific value as compared to Malaysian sub-bituminous coal which has 24.6 MJkg-1. Furthermore, pyrolysis of any wastes encourages proper sanitation and lead to a healthy environment. It can also serve as a potential solution to the energy crisis in developing countries, Nigeria in particular if bio-oil can be improved to power electricity generation facilities in replacement to diesel.

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