Akbar Hanif Dawam Abdullah
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View article: The carrageenan fermentation process for (L)-lactic acid production using Lactobacillus plantarum: effect of fermentation time
The carrageenan fermentation process for (L)-lactic acid production using Lactobacillus plantarum: effect of fermentation time Open
The increase in plastic production has raised concerns about the depletion of fossil fuels. In addition, the environmental problems related to improper plastic waste have become progressively concerning. Polylactic acid (PLA) is one of the…
View article: Characterization of microcrystalline cellulose from red seaweed Gracilaria verucosa and Eucheuma cottonii
Characterization of microcrystalline cellulose from red seaweed Gracilaria verucosa and Eucheuma cottonii Open
Microcrystalline cellulose (MCC) is pure cellulose isolated from alpha cellulose. The demand for renewable and sustainable raw materials for the industry has developed as one of the most pressing challenges in recent decades. The seaweed p…
View article: Plastic Composites Using Mango Leaf Waste for Cost Effectiveness and Green Environment
Plastic Composites Using Mango Leaf Waste for Cost Effectiveness and Green Environment Open
Due to ecological considerations, natural biodegradation composites are widespread in tailoring plastics properties to specific needs. This work aims to demonstrate the available opportunity in using 100 and 140 mesh powdered mango leaf (P…
View article: Dust Emission Investigation of Agricultural Powdered Materials.
Dust Emission Investigation of Agricultural Powdered Materials. Open
The dust emission in the workplace may affect workers health or create safety problem. This paper describes the development of an experimental apparatus to investigate dust emission as a function of particle size in various fall distances …
View article: Physical properties of bioplastic agar/chitosan blend
Physical properties of bioplastic agar/chitosan blend Open
Thermoplastic agar/chitosan blend was prepared by a rheomix process, and the effect of concentration agar: chitosan on the material properties forms were investigated. This research aimed to observe the physical properties of bioplastic ag…
View article: EFFECT OF K-CARRAGEENAN ON MECHANICAL, THERMAL AND BIODEGRADABLE PROPERTIES OF STARCH–CARBOXYMETHYL CELLULOSE (CMC) BIOPLASTIC
EFFECT OF K-CARRAGEENAN ON MECHANICAL, THERMAL AND BIODEGRADABLE PROPERTIES OF STARCH–CARBOXYMETHYL CELLULOSE (CMC) BIOPLASTIC Open
Starch–carboxymethyl cellulose (CMC) bioplastics have limited mechanical properties. Carrageenan from seaweed is a potential reinforcement material for improving the mechanical properties of bioplastics. This study aimed to determine the e…
View article: THE PHYSICOCHEMICAL CHARACTERISTICS OF RECYCLED-PLASTIC PELLETS OBTAINED FROM DISPOSABLE FACE MASK WASTES
THE PHYSICOCHEMICAL CHARACTERISTICS OF RECYCLED-PLASTIC PELLETS OBTAINED FROM DISPOSABLE FACE MASK WASTES Open
THE PHYSICOCHEMICAL CHARACTERISTICS OF RECYCLED-PLASTIC PELLETS OBTAINED FROM DISPOSABLE FACE MASK WASTES. The government policy to wear a face mask during the COVID-19 pandemic has increased disposable face mask wastes. Thus, to reduce su…
View article: SYNTHESIS L-LACTIC ACID FROM FERMENTATION OF CASSAVA PULP BY USING TEMPEH INOCULUM
SYNTHESIS L-LACTIC ACID FROM FERMENTATION OF CASSAVA PULP BY USING TEMPEH INOCULUM Open
SYNTHESIS L-LACTIC ACID FROM FERMENTATION OF CASSAVA PULP BY USING TEMPEH INOCULUM. This study used cassava waste pulp as a fermentation substrate to produce lactic acid using a tempeh inoculum. Tempeh inoculum is a mixed culture of Rhizop…
View article: The effect of inoculum and glucose addition on polyhydroxyalkanoate production by Brevibacterium sp. B45
The effect of inoculum and glucose addition on polyhydroxyalkanoate production by Brevibacterium sp. B45 Open
Petroleum-based plastics are the major cause of environmental pollution because the plastics need years to be degraded. The difficulties in handling waste of petroleum-based plastic have motivated researchers to produce environmentally fri…
View article: EFFECT OF AGAR AND KAPPA-CARRAGEENAN ON THERMAL AND MECHANICAL PROPERTIES OF THERMO PLASTIC STARCH (TPS)
EFFECT OF AGAR AND KAPPA-CARRAGEENAN ON THERMAL AND MECHANICAL PROPERTIES OF THERMO PLASTIC STARCH (TPS) Open
Effect of Agar and kappa-Carrageenan on Thermal and Mechanical Properties of Thermo Plastic Starch (TPS) Thermoplastic starch needs to be blend with other materials because of its limited properties. In order to gain the desired properties…
View article: Effects of Water on Hydrophobization and Mechanical Properties of Thermoplastic Agar
Effects of Water on Hydrophobization and Mechanical Properties of Thermoplastic Agar Open
Thermoplastic agar (TPA) was prepared by a melt extrusion process and the effects of water contents on the material properties of these foams were investigated. Bioplastics were produced by mixing agar, glycerol, and water at ratio agar; g…
View article: The Effect of Blending Methods on the Properties of PLA/Gr Nanocomposites
The Effect of Blending Methods on the Properties of PLA/Gr Nanocomposites Open
Polymer nanocomposites based on polylactic acid (PLA) and graphene (Gr) were blended via melt blending and solution mixing. The properties of hardness and melt flow index (MFI) were investigated with variables of Gr loading from 0.5–2.0 wt…
View article: Effect of chitin addition on water resistance properties of starch-based bioplastic properties
Effect of chitin addition on water resistance properties of starch-based bioplastic properties Open
In this study, the fabrication of starch-based bioplastics and the addition of chitin have been prepared. Bioplastics were produced by mixing starch, glycerol and chitin at various concentrations (1 %, 2 %, 3 %, 4 % w/w) through the meltin…
View article: Fabrication and Characterization Of Poly Lactic Acid (PLA)-Starch Based Bioplastic Composites
Fabrication and Characterization Of Poly Lactic Acid (PLA)-Starch Based Bioplastic Composites Open
In this study, to make a good bioplastic composite, starch-based bioplastic is produced by adding polylactic acid (PLA) to improve its properties. PLA was added into starch-based bioplastic with various concentrations of 0, 3, and 10 wt.%.…
View article: EFFECTS OF STARCH-GLYCEROL CONCENTRATION RATIO ON MECHANICAL AND THERMAL PROPERTIES OF CASSAVA STARCH-BASED BIOPLASTICS
EFFECTS OF STARCH-GLYCEROL CONCENTRATION RATIO ON MECHANICAL AND THERMAL PROPERTIES OF CASSAVA STARCH-BASED BIOPLASTICS Open
This study aimed to investigate the effects of different starch-glycerol concentration ratio on mechanical and thermal properties of cassava starch bioplastics. Bioplastics were prepared by mixing starch with glycerol at different starch-g…
View article: Preliminary study of biodegradability of starch-based bioplastics using ASTM G21-70, dip-hanging, and Soil Burial Test methods
Preliminary study of biodegradability of starch-based bioplastics using ASTM G21-70, dip-hanging, and Soil Burial Test methods Open
Biodegradability testing methods being used nowadays have many disadvantages; they are time-consuming, inefficient medium used, and too much sample needed to do the test. This work aimed to study the biodegradability of starch-based biopla…
View article: FABRICATION AND CHARACTERIZATION OF STARCH BASED BIOPLASTICS WITH PALM OIL ADDITION
FABRICATION AND CHARACTERIZATION OF STARCH BASED BIOPLASTICS WITH PALM OIL ADDITION Open
In this work, starch-based bioplastics in advancing its properties were positively arranged with the addition of palm oil. Starch-based bioplastics were produced by dry blending method and compression technique with mixing starch and glyce…
View article: Physical and chemical properties of corn, cassava, and potato starchs
Physical and chemical properties of corn, cassava, and potato starchs Open
Starch-based plastic is developed for petroleum-based plastic material replacement. Thus, basic knowledge of starch properties is important. This research aimed to evaluate the physical and thermal properties of various potential starch, i…
View article: Physical and mechanical properties of five Indonesian bamboos
Physical and mechanical properties of five Indonesian bamboos Open
Indonesia is a country with abundant of bamboo. More than 100 species of bamboo are found in Indonesia, and the production of bamboo ranks second after China. Bamboo has great potential to be used as industrial raw materials due to its hig…