El‐Sayed Negim
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View article: Synthesis and Characterization of Biodegradable Polymer Blends Based on Chitosan
Synthesis and Characterization of Biodegradable Polymer Blends Based on Chitosan Open
Despite its broad application due to its affordability, biodegradability, and natural antimicrobial and antioxidant activities, chitosan (CS) still exhibits limitations in mechanical strength and barrier effectiveness. Owing to its unique …
View article: Epoxy Resin Development for Anticorrosion Coatings
Epoxy Resin Development for Anticorrosion Coatings Open
In this study, a high molecular weight epoxy resin (ELM-NG 900Z) based on diglycidyl ether of bisphenol A was cured with different types of hardeners to examine their impact on the physical and mechanical properties of the epoxy resin. The…
View article: Optimizing Anticorrosion Coating Performance: Synthesis of Polyurethane/Epoxy Hybrids
Optimizing Anticorrosion Coating Performance: Synthesis of Polyurethane/Epoxy Hybrids Open
Corrosion-resistant coatings are essential for prolonging the lifespan of metal structures, yet conventional formulations often lack sufficient mechanical strength and chemical durability. This study focuses on the development of polyureth…
View article: Epoxy coatings for anticorrosion applications: a review
Epoxy coatings for anticorrosion applications: a review Open
Epoxy resins are among the most commonly used materials for anticorrosion applications due to their excellent adhesion, mechanical strength, and chemical resistance. However, conventional epoxy coatings face significant limitations in prov…
View article: Obtaining and Characterization of Biodegradable Polymer Blends Based on Polyvinyl Alcohol, Starch, and Chitosan
Obtaining and Characterization of Biodegradable Polymer Blends Based on Polyvinyl Alcohol, Starch, and Chitosan Open
Although chitosan (CS) is used in many industries because of its low cost, biodegradability, nontoxic, antibacterial, and antioxidant qualities, it lacks sufficient mechanical and barrier properties. Biodegradable polymers based on CS, pol…
View article: Synthesis, Characterization, and Application of Polyurethane-Acrylic Hybrids as Anticorrosion Coatings
Synthesis, Characterization, and Application of Polyurethane-Acrylic Hybrids as Anticorrosion Coatings Open
In the current study, the synthesis, and properties of polyurethane (PU) and acrylic copolymer (AK), as well as polyurethane/acrylic polymer hybrid (PU/AK), were examined. Polyurethane (PU) was synthesized by the polyaddition polymerizatio…
View article: Potential of Critical Mineral and Cytotoxicity Activity of Gadolinium Complex as Anti-amoebic Agent by Viability Studies and Flow Cytometry Techniques
Potential of Critical Mineral and Cytotoxicity Activity of Gadolinium Complex as Anti-amoebic Agent by Viability Studies and Flow Cytometry Techniques Open
The screening of lanthanide as a critical mineral and used as an anti-amoebic agent is important to identify the safest method and mode of cell death to eliminate this microorganism from the host. In this study, gadolinium ion (Gd3+) that …
View article: Synthesis, Characterization, and Applications of Anticorrosion Polyurethane Coating: The Effect of Bisphenol F
Synthesis, Characterization, and Applications of Anticorrosion Polyurethane Coating: The Effect of Bisphenol F Open
Polyurethane coatings were synthesized through polyaddition polymerization using various polyols. These polyols included polypropylene glycol with different molecular weights, such as PPG-2000, and PPG-1200, as well as 1,4- butanediol. Add…
View article: Assessment of the anticancer potential of certain phenolic and flavonoid components in ginger capsules using colorectal cancer cell lines coupled with quantitative analysis
Assessment of the anticancer potential of certain phenolic and flavonoid components in ginger capsules using colorectal cancer cell lines coupled with quantitative analysis Open
Colorectal cancer (CRC) is the fourth most common cause of malignant tumor death. The development of novel, more effective drugs is desperately needed to treat CRC. Zingiber officinale is believed to possess anticancer properties due to it…
View article: Synthesis, Characterization, and Application of Poly(Styrene-Co-Glycidyl Methacrylate) as Reactive Diluents to Epoxy Resin
Synthesis, Characterization, and Application of Poly(Styrene-Co-Glycidyl Methacrylate) as Reactive Diluents to Epoxy Resin Open
Anticorrosion coatings are specialized products designed to protect metal surfaces from costly and dangerous corrosion, acting as barriers against corrosive organisms. Therefore, this study examined the physical and mechanical properties o…
View article: Mini review polyurethane hybrids: preparation, characterization and applications
Mini review polyurethane hybrids: preparation, characterization and applications Open
Polyurethane hybrids (PUHs) are a type of versatile materials with a broad variety of possible applications. Considering the connections between their structure and characteristics, this is especially true. Because of its special mechanica…
View article: Influence of fullerene content on the properties of polyurethane resins: A study of rheology and thermal characteristics
Influence of fullerene content on the properties of polyurethane resins: A study of rheology and thermal characteristics Open
The effect of different contents of fullerene on the properties of polyurethane resins (PUs), including rheology and thermal properties, was investigated. Polyurethane resins were prepared through polyaddition reactions using different iso…
View article: Synthesis of Chemical Adsorbent for Purification of Heavy Oil Residue
Synthesis of Chemical Adsorbent for Purification of Heavy Oil Residue Open
This study aimed to investigate synthesized wollastonite based on amorphous silicon dioxide and calcium carbonate as adsorbent for cleaning hydrocarbon feedstock from heavy organometallic compounds and sulfur. During the analysis, physicoc…
View article: Modification of Petroleum Bitumen with Secondary Polyethylene in the Presence of Vermiculite
Modification of Petroleum Bitumen with Secondary Polyethylene in the Presence of Vermiculite Open
This article presents studies on the modification of petroleum bitumen with polymer waste in the presence of vermiculite. An increase in temperature leads to an increase in the interaction of components, partial breakage of polyethylene an…
View article: Quality characteristics of the shape preservation of cooked pasta with millet addition at different time intervals
Quality characteristics of the shape preservation of cooked pasta with millet addition at different time intervals Open
The current study presents the indicators of shape preservation of cooked pasta by adding 7.7% millet in various time intervals. The experiments were conducted immediately after the pasta cooking process and after two hours. In the Eurasia…
View article: ELASTOMERS FOR DOWNHOLE SCREW PUMP
ELASTOMERS FOR DOWNHOLE SCREW PUMP Open
One of the most promising means of lifting oil is the installation of a downhole screw pump with a drive that rotates the rod column by rotating the plunger. Screw pumps are capable of producing high viscosity oil, characterized by a high …
View article: Processing of titanium-containing ores for the production of titanium products: A comprehensive review
Processing of titanium-containing ores for the production of titanium products: A comprehensive review Open
This article discusses the main technologies for processing titanium-containing raw materials, the advantages, and disadvantages of various technological solutions. The analysis of the literature revealed that the traditional methods for t…
View article: Modified bitumen-polymer mastic to protect metal coatings from corrosion
Modified bitumen-polymer mastic to protect metal coatings from corrosion Open
The protection of metallic structures against corrosion remains a pivotal challenge across numerous industries. In recent years, the amalgamation of modified bitumen with epoxy resin has emerged as a promising avenue in the pursuit of enha…
View article: Synthesis and Study Medical Application of Nanocomposites Based on grafted Chitosan /Polyvinyl alcohol
Synthesis and Study Medical Application of Nanocomposites Based on grafted Chitosan /Polyvinyl alcohol Open
In the present study, synthesis of bis Schiff base [I, II] by reaction of one mole of terephthalaldehyde with two mole of 2-amino-5-mercapto-1,3,4-thiadiazole or 4-amino benzene thiol in the ethanol absolute, then compounds [I,II] were rea…
View article: The Effect of Calcium Carbonate, Rice, and Wheat Straw on the Biodegradability of Polyethylene/Starch Films
The Effect of Calcium Carbonate, Rice, and Wheat Straw on the Biodegradability of Polyethylene/Starch Films Open
A polyethylene (PE)/starch copolymer was prepared by a grafting technique in the presence of benzoyl peroxide as a catalyst and xylene as a solvent. The ratio of PE grafted onto starch was in ratio 1:5, respectively. The obtained grafted c…
View article: Modification of Xanthan Gum with Styrene and Investigation of its Rheological Properties
Modification of Xanthan Gum with Styrene and Investigation of its Rheological Properties Open
A "green" polymer made by bacteria, xanthan gum has several applications in both the food and drug industries. Because of its harmlessness, xanthan gum is frequently used in other fields after quality improvement through modification. This…
View article: Academic Research of the Protective Ability of Zinc-Filled and Epoxy Polyamide Paint Coatings against Atmospheric and Soil Corrosion
Academic Research of the Protective Ability of Zinc-Filled and Epoxy Polyamide Paint Coatings against Atmospheric and Soil Corrosion Open
Currently, zinc-filled coatings capable of providing protection against corrosion through a barrier and tread mechanism are becoming increasingly widespread. When exposed to an aggressive environment, the coating prevents steel corrosion b…
View article: Analytical Review of Conductive Coatings, Cathodic Protection, and Concrete
Analytical Review of Conductive Coatings, Cathodic Protection, and Concrete Open
The principal and most expensive type of degradation that currently affects the performance of reinforced concrete bridge constructions is the corrosion of steel reinforcement. Strong financial losses result from the corrosion of reinforce…
View article: Quantitative analysis of total phenolic and flavonoid compounds in different extracts from ginger plant (Zingiber officinale) and evaluation of their anticancer effect against colorectal cancer cell lines
Quantitative analysis of total phenolic and flavonoid compounds in different extracts from ginger plant (Zingiber officinale) and evaluation of their anticancer effect against colorectal cancer cell lines Open
Objectives : To quantify quercetin, gallic acid, rutin, naringin, and caffeic acid in the rhizome of Zingiber officinale different extracts in seven different solvents (methanol, ethanol, ethyl acetate, water, dichloromethane, chloroform, …
View article: Enhancement of apixaban's solubility and dissolution rate by inclusion complex (β-cyclodextrin and hydroxypropyl β-cyclo¬dextrin) and computational calculation of their inclusion complexes
Enhancement of apixaban's solubility and dissolution rate by inclusion complex (β-cyclodextrin and hydroxypropyl β-cyclo¬dextrin) and computational calculation of their inclusion complexes Open
Background and Purpose: Apixaban (AP) is a factor X inhibitor, an orally active drug that inhibits blood coagulation for better prevention of venous thromboembolism. It has poor solubility, dissolution rate and low bioavailability. The aim…
View article: Effect of Polyethylene Glycol Methyl Ether Methacrylate on the Biodegradability of Polyvinyl Alcohol/Starch Blend Films
Effect of Polyethylene Glycol Methyl Ether Methacrylate on the Biodegradability of Polyvinyl Alcohol/Starch Blend Films Open
Blend copolymers (PVA/S) were grafted with polyethylene glycol methyl methacrylate (PEGMA) with different ratios. Potassium persulfate was used as an initiator. The blend copolymer (PVA/S) was created by combining poly(vinyl alcohol) (PVA)…
View article: An Overview of Epoxy Resins as coating to protect metals from corrosion
An Overview of Epoxy Resins as coating to protect metals from corrosion Open
Any structures of metal, which are used in construction work, must be qualitatively protected from the external environment, more precisely, from the development of corrosion. Under the influence of the environment as a result of corrosive…