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1246 articles for “thero-chemical”
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Characterization and Gamma Irradiated MA-EMA Copolymer by ESR and FTIR Techniques
Abstract: AbstractGamma irradiation effect of methacrylamide-ethyl methacrylate (MA-EMA) copolymer has been investigated by electron spin resonance (ESR) and Fourier Transform infrared (FTIR) spectroscopic techniques. The ESR spectrum observed for gamma irradiated MA-EMA copolymer has shown resolved hyperfine (hf) pattern at lower temperatures (77K) while at higher temperatures the spectrum is appeared to be broadened. Fourier Transform Infrared spectra of pure and gamma irradiated MA-EMA copolymer have been recorded for the copolymer …
Published in Journal of Polymer & Composites · Vol. 4, Issue 3, 2016 · pp. 40–44 Read article
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PVC Pipe Designer Furniture
Abstract: AbstractPolyvinyl chloride (PVC) products are 100% recyclable physically, chemically and energetically. This can be used to make various products like steam houses, kid’s houses, shoes stands, laptop stands, kid’s scooters, bookshelves etc. There are many benefits of PVC such as, high impact resistance, good temperature capability, light weight etc. PVC’s versatility, cost effectiveness and an excellent record of use, makes it capable enough that it can replace traditional building materials …
Published in Journal of Polymer & Composites · Vol. 4, Issue 2, 2016 · pp. 29–33 Read article
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Mechanical Characterization of Hemp Fiber Reinforced Polyester Composites: A Review
Abstract: AbstractThe natural fibers are bio-form of plant and animal skin. The natural fibers are abundant in quantity. They possess lightweight and high strength capabilities. The use of those fibers leads no harms in environment, are biodegradable and renewable source of energy. The paper reviews different types of natural fiber, among them hemp fiber, and recognize their mechanical and chemical characteristics. The paper investigates the composite form, which is formed using …
Published in Journal of Polymer & Composites · Vol. 4, Issue 1, 2016 · pp. 1–3 Read article
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A Review on Mechanical and Tribological Properties of Metal Matrix Composites
Abstract: AbstractNowadays, there is a rapid development in advanced metal matrix composites for structural engineering and functional devices. A real change in research from monolithic to composite materials has taken place due to need for low cost, high performance and good quality materials from the past decade. Composite materials consist of two or more materials that may differ in chemical and physical properties and are not soluble in one another. The …
Published in Journal of Polymer & Composites · Vol. 4, Issue 1, 2016 · pp. 16–26 Read article
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Studies on Mechanical, Electrical and Thermal Properties of Compatibilized PLA/ABS Blends Reinforced with Wood Flour
Abstract: AbstractPoly lactic acid (PLA) bio-polymer (60%) was blended with acrylonitrile butadiene styrene (ABS) (40%) and filled with wood flour (0, 10, 20%) using a twin screw compounding extruder and a suitable compatibilizer i.e., glycerol, is also incorporated into that mixture at a percentage of 4% respectively. Test specimens were prepared by using an injection molding machine for mechanical, electrical and thermal properties as per ASTM standards and the properties were …
Published in Journal of Polymer & Composites · Vol. 3, Issue 3, 2015 · pp. 20–26 Read article
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Tung Oil Based Polyurethanes: A Short Review
Abstract: Polyurethane (PU) formulated from natural polyols obtained from Tung oil (TO) have improved hydroxylation of the double bonds in the fatty acid chains of the unsaturated oil followed by the alcoholysis of the hydroxylated oil. The comparative chemical analysis between unmodified and modified TO suggested that the hydroxyl content increased significantly after the hydroxylation and alcoholysis reactions. Incorporated wood flour (WF), microcrystalline cellulose (MCC) or rice husk ash (RHA) as …
Published in Journal of Polymer & Composites · Vol. 3, Issue 3, 2015 · pp. 43–47 Read article
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Comparative Analysis of Blend of Virgin PVC and NBR with Recycled PVC and NBR
Abstract: AbstractStudies conducted on blending of polymers like acrylonitrile butadiene rubber (NBR) and polyvinylchloride (PVC) to produce new polymeric materials with specific properties which can be used for some special applications. This blend has been formulated for products working in contact with castor oils. Blends at different temperature indicate that an optimum temperature existes for its formation. Incorporating PVC in various compositions has enhanced their physico-mechanical and chemical properties of this …
Published in Journal of Polymer & Composites · Vol. 3, Issue 1, 2015 · pp. 12–14 Read article
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Alcid Bamboo
Abstract: AbstractNatural bamboo is one of the fastest growing plants, with maturity cycle of 3–4 year, thus making highly attractive natural renewable resource compared to hardwood. This bamboo can replace timber in many applications, but their mechanical property differs with species, age, climatic factor, moisture content and different height of culm. Due to this the natural bamboo can be replaced by synthetic one which are man-made and also known as engineered …
Published in Journal of Polymer & Composites · Vol. 2, Issue 3, 2023 · pp. 28–32 Read article
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Ionic Conductivity of Chain Extension Supramolecular Polymer Material based on Reactive Hydrogen Bonding Motif
Abstract: AbstractSelf-assembly of low molecular weight oligomers possessing good mechanical properties at room temperature and having a low melt viscosity at elevated temperatures are of interest for many applications, such as hot melts and thermoplastic elastomers. Association between end groups can be based on a variety of secondary interactions, such as Vander Waals, hydrophobic, ionic interactions, or hydrogen bonding. A low molecular weight poly (ethylene glycol) (PEG) was functionalized with 2-Ureido-4[1H] …
Published in Journal of Polymer & Composites · Vol. 2, Issue 1, 2023 · pp. 30–36 Read article
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An Assessment of Interfacial Chemistry and Character of Fiber/Polymer Microcomposites
Abstract: AbstractThe interfacial chemistry and character of hygrothermally treated E-glass/epoxy microcomposite have been investigated by Fourier transform infrared spectroscope (FTIR-imaging), temperature-modulated differential scanning calorimeter (TMDSC) and scanning electron microscope (SEM) techniques. The physico-chemical interactions occurring between absorbed water molecules and the network of a tetrafunctional epoxy resin were studied by FTIR-imaging. This is used to study the mechanistic details of epoxy curing on the molecular level. Absorbance peaks of OH stretching …
Published in Journal of Polymer & Composites · Vol. 1, Issue 1, 2013 · pp. 1–5 Read article
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Development of Starch/Keratin/Chitosan Composite Material as a Substitute for Polystyrene in Food Packaging
Abstract: The increase in awareness of the environmental impact of non-biodegradable waste from food packaging, has seen manufacturers push towards initiating production of eco-friendly packaging materials. This research serves as a step forward in the direction of going green, through the development of a composite material from natural, biodegradable polymers, for use in production of packaging material for fast foods. The composite was prepared from starch and chitosan with chicken feather …
Published in Journal of Polymer & Composites · Vol. 7, Issue 3, 2019 · pp. 1–7 Read article
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Improved Thermal stability of Boron treated Coir MDF boards
Abstract: Coir fibre a biodegradable natural fibre extracted from the husk of the coconut (Cocos Nucifera L.), traditionally used for manufacturing ropes, carpets or mattresses is now being used for manufacturing composite panel boards and could extensively substitute for wood and engineered wood products whose applications ranges from packaging to construction materials. Coir composite panel board samples were chemically treated with preservative solutions carrying combinations of Borax and Boric Acid with …
Published in Journal of Polymer & Composites · Vol. 8, Issue 2, 2020 · pp. 33–40 Read article
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Surface modification of polymeric membranes using plasma treatment: A comprehensive review
Abstract: In the contemporary science era, polymer membranes have a wide range of services. Polymeric membranes have very good bulk properties having potential applications in various processing industries.These membranes can be even modified using various techniques. The surface modifications of membranes to incorporate various hydrophilic functional groups without changing the bulk properties has gained popularity. The surface becomes hydrophilic because new polar functional groups are formed. For instance, after oxygen and …
Published in Journal of Polymer & Composites · Vol. 8, Issue 2, 2020 · pp. 91–100 Read article
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A Contemplating Review on Pure and Modified Polymeric Membranes for O2/N2 Separation
Abstract: The separation of O2/N2 by using membrane technology from air got the interest of the process industries due to its advantage over the conventional technologies like cryogenic distillation and pressure swing adsorption, in terms of simplicity, size, economic and power consumption. Membrane material selection for the separation of O2/N2 is challenging because most of the materials have low selectivityand others have low permeability. To meet both the selectivity of O2/N2 …
Published in Journal of Polymer & Composites · Vol. 8, Issue 2, 2020 · pp. 9–32 Read article
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Characteristics of Novel Geopolymer Composites Synthesized from Red Mud and Diatomaceous Earth in Autoclave Conditions without Using Alkaline Activators
Abstract: The geopolymer-based materials have been studied and developed since the last decades of the 20th century and applied in many fields of life. The production of geopolymer also has many different levels of technology from low to high technology which depends on quality and the applied fields of products. The geopolymer composites are also considered as friendly environmentally products related to low energy consumption production technology; reuse industrial wastes as …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 81–91 Read article
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Antibacterial Surfaces: A Comprehensive Review
Abstract: Microbial communities adhere to surfaces and colonize themselves. Challenges such as microbial infections are, especially, observed on the surface associated with various medical products. In this review, the authors made efforts to maintain the balance of clarity among different types of antibacterial surfaces that exhibit anti-biofouling or bactericidal or both with the help of present advancements. Besides, this review paper categorised different approaches to modify the surface to antibacterial surfaces …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 92–99 Read article
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A Review on Biodegradability of Different Synthetic Vinyl Polymer Composite Blends
Abstract: The last few decades witnessed rapid rise in usage of polymers because of their growing demands in different industries. Mostly, non-biodegradable polymers form the larger proportion and there persistent usage leads to accumulation of hazardous chemicals in the environment. Therefore, to meet the demands, biodegradable polymers, polymers need to induced, designed and further modified to reduce generation of harmful byproducts. As synthetic polymers are durable than the natural polymers emerging …
Published in Journal of Polymer & Composites · Vol. 9, Issue 2, 2021 · pp. 81–96 Read article
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An Optimize Formulation to Synthesis of size Controlled Hydrophobic Starch Acetate Nanoparticles using Box-Behnken Design
Abstract: The best way to improve the overall performance of native starch is by chemical modification. In recent years, hydrophobically modified starch has attracted considerable attention for the design and manufacture of novel nanoparticulate drug delivery carriers. The purpose of this research was to synthesize hydrophobic starch nanoparticles (NPs) and to optimize process factors through the use of response surface methodology (RSM). The corn starch acetate (CSA) NPs was synthesized using …
Published in Journal of Polymer & Composites · Vol. 10, Issue 1, 2022 · pp. 32–54 Read article
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Synthesis of PANI/RGO/NiCrO Nanocomposite Material for Charge Storage Application
Abstract: PANI/RGO/NiCrO nanocomposite is synthesized by chemical oxidative polymerization of aniline and Nickel-Chromium Oxide (NiCrO). The prepared PANI/RGO/NiCrO nanocomposite exhibited high specific capacitance of 800 F/g at the scan rate of 5 mV/s, high power density of 1399.44 Wkg-1 and high energy density of 70 Whkg-1. The as-prepared polymer nanocomposites were characterized by X-ray diffraction (XRD) to study crystallinity, Fourier transform infrared spectroscopy (FTIR) to know the functional groups, Transmission electron …
Published in Journal of Polymer & Composites · Vol. 10, Issue 1, 2022 · pp. 89–99 Read article
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Influence of Bi2O3 on Physical, Optical and gamma radiation Properties of BaO-Bi2O3-B2O3-CuO and BaO-Bi2O3-B2O3-Fe2O3 glasses
Abstract: In this present work glasses with chemical composition 30BaO-XBi2O3-(69-X)B2O3-1CuO and 30BaO-XBi2O3-(69-X)B2O3-1Fe2O3 (X = 0, 5, 10, 15, 20 and 25 mole%) have been prepared and labeled as BBBC and BBBF series, respectively. Traditional quenching method was employed for making these samples. XRD diffractograms confirmed that the materials were amorphous. Physical, optical and structural properties were studied with the influence of Bi2O3 concentration. The density of both BBBC and BBBF series …
Published in Journal of Polymer & Composites · Vol. 10, Issue 1, 2022 · pp. 20–31 Read article