Papers by Prakash Mahanwar
Journal of Applied Polymer Science, 2010
The widespread use of polymeric materials with good mechanical properties, high service temperatu... more The widespread use of polymeric materials with good mechanical properties, high service temperature, and improved chemical resistance has led to active research in the development of new high performance engineering polymer materials.14 Aromatic polymers have ...
Paintindia, 2006
RefDoc Bienvenue - Welcome. Refdoc est un service / is powered by. ...
The 3rd International Online-Conference on Nanomaterials
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
International Journal of Engineering Trends and Technology, 2022
American Journal of Engineering and Applied Sciences, 2014
The effect of blend composition and Electron Beam (EB) irradiation on the crystallization and the... more The effect of blend composition and Electron Beam (EB) irradiation on the crystallization and thermal behavior of Low Density Polyethylene (LDPE)/Ethylene-Propylene-Diene elastomer (EPDM) blends had been studied. Melting temperatures were found to remain unchanged upon variation of blend composition as well as irradiation dose. But the degree of crystallinity and T c (crystallization temperature) were decreased with increase in EPDM content and EB dose. On the other hand, thermal stability (in terms of onset temperature and degradation temperature) and activation energy were increased with increase in EPDM content and irradiation dose. But the speed of degradation slowed down with increasing EPDM content and EB dose. Interestingly, once Trimethylolpropane Triacrylate (TMPTA) and Triallyl Cynuerate (TAC) were incorporated into the blends, the degrees of change of these properties were more in same direction upon irradiation. At higher irradiation dose properties were demoted due to chain scission.
Open Journal of Organic Polymer Materials, 2015
Polymeric materials from renewable resources have attracted a lot of attention in recent years. T... more Polymeric materials from renewable resources have attracted a lot of attention in recent years. The development and utilization of vegetable oils for polymeric materials are currently in the spotlight of the polymer and chemical industry, as they are the largest renewable platform due to their universal wide availability, ingrained biodegradability, low cost, and excellent environmental aspects (i.e., low ecotoxicity and low toxicity toward humans). These excellent natural characteristics are now being taken advantage of in research and development, with vegetable oil derived polymers/polymeric materials/composites being used in numerous applications including paints and coatings, adhesives, and nanocomposites. The aim of this review paper is to give a fundamental description of the various vegetable oil applications in polymer materials and its recent developments. Particular emphasis will be placed on study and main application of triglyceride based additive for polymer and to give the reader an insight into the main developments is discussed.
Open Journal of Synthesis Theory and Applications, 2016
Serials of polystyrene/SiO 2 Nano composites (PS/SiO 2) with different content of inorganic fille... more Serials of polystyrene/SiO 2 Nano composites (PS/SiO 2) with different content of inorganic fillers were successfully prepared by the in situ bulk radical polymerization of styrene under microwave irradiation. The effect of the amount of Nano SiO 2 on the properties of the PS/SiO 2 Nanocomposites along with the average relative molecular masses (Mn, Mz and Mw) was investigated by thermal analysis and X-Ray Diffraction (XRD). Their structural model was proposed on the basis of the Optical Microscopy, FTIR (Fourier Transform Infrared) analysis, differential scanning calorimetry (DSC), gel permeation chromatography (GPC) and X-Ray Diffraction (XRD). The dispersion of nanoparticles in Polystyrene is observed in the magnified image. The effect of microwave irradiation power on molecular weight of polystyrene was also studied. It was found that, the microwave assisted reaction needs less time as compare to conventional polymerization and found to be in between 10 to 15 min.
International Journal of Plastics Technology, 2010
The purpose of this study was to synthesize plasterboard based on recycled poly(ethylene terephth... more The purpose of this study was to synthesize plasterboard based on recycled poly(ethylene terephthalate) (PET) and fly ash. The molecular weight determination of unsaturated polyester (UP) from recycled PET was performed by functional titration method. The effect of initiator, benzoyl peroxide (BPO) on the curing kinetic of UP from recycled PET was studied by differential scanning calorimetry (DSC) and at 2 phr BPO led to good curing process. The content of fly ash (50, 100, 150, 200 phr) at 2007 nm in diameter was used and the effect of fly ash content on some properties such as flexural strength, vickers hardness, and impact strength of plasterboard was researched. Test results showed an increase in mechanical properties, especially at 150 and 175 phr filler amount. In addition, the morphology of plasterboard at different fly ash contents was characterized by scanning electron microscopy (SEM). Also, chemical resistance of plasterboard was evaluated from the weight change in different chemical environment.
Research Journal of Chemistry and Environment, Feb 25, 2022
Frontiers in Chemistry, 2022
The polymeric properties are tailored and enhanced by high energy radiation processing, which is ... more The polymeric properties are tailored and enhanced by high energy radiation processing, which is an effective technique to tune the physical, chemical, thermal, surface, and structural properties of the various thermoplastic and elastomeric polymeric components. The gamma and electron beam radiation are the most frequent radiation techniques used for crosslinking, compatibilizing, and grafting of various polymer blends and composites systems. The gamma radiation-induced grafting and crosslinking are the effective, rapid, clean, user-friendly, and well-controlled techniques for the polymeric materials for their properties improvement for high performance applications such as nuclear, automobile, electrical insulation, ink curing, surface modification, food packaging, medical, sterilization, and health-care in a different environment. Similarly, electron beam radiations crosslinking has been a well-known technique for properties development and has economic benefits over chemical cros...
Journal of Polymers and the Environment, 2022
Present work aims to synthesize the herbicide-loaded bio-based hydrogels and study the release me... more Present work aims to synthesize the herbicide-loaded bio-based hydrogels and study the release mechanism. The different ratios of starch and chitosan were chosen as the bio-based resources to form the hydrogel matrix with varying concentrations of two crosslinkers. The synthesized hydrogels were characterized using Fourier transform infrared spectroscopy for reaction completion. Thermogravimetric analysis provided information about the obtained hydrogels’ thermal stability, suggesting the tremendous positive impact of chitosan concentration. Differential scanning calorimetry was done to know the initial trapped water release from the hydrogel matrix and relate the structures with the release rate study. Further, scanning electron microscopy revealed the morphology of the obtained hydrogels and could establish the relation with the corresponding hydrogel structures. The equilibrium swelling degree, release dynamics of atrazine, and diffusion mechanism have also been evaluated. The sw...
The 2nd International Online Conference on Polymer Science&mdash;Polymers and Nanotechnology for Industry 4.0, 2021
Thermally sensitive food and pharma packages are maintained at desired temperatures using refrige... more Thermally sensitive food and pharma packages are maintained at desired temperatures using refrigeration systems. These systems are powered by non-conventional energy resources. They provide uneven cooling in large containers. Interruption in their functioning during supply chain activities increases their energy requirements. Studies revealed that using phase change material (PCM)-polymer composites in refrigeration systems and packaging containers curtailed energy utilization for maintaining a consistent temperature. These composites maintain a temperature around its phase change temperature by absorbing or releasing latent heat. This review discusses different designs of PCM-polymer composites that maintain the temperature of big shipments and small containers.
The main objective of incorporating natural fibers such as Henequen microfibers (NF) into the Hig... more The main objective of incorporating natural fibers such as Henequen microfibers (NF) into the High Density Polyethylene (HDPE) polymer matrix is to reduce the cost and to enhance the mechanical as well as other properties. The Henequen microfibers were chopped manually to 5-7mm in length and added into the polymer matrix at the optimized concentration of 8 wt %. In order to facilitate the link between Henequen microfibers (NF) and HDPE matrix, coupling agent such as Glycidoxy (Epoxy) Functional Methoxy Silane (GPTS) at various concentrations from 0.1%, 0.3%, 0.5%, 0.7%, 0.9% and 1% by weight to the total fibers were added. The tensile strength of the composite increased marginally while % elongation at break of the composites decreased with increase in silane loading by wt %. Tensile modulus and stiffness observed increased at 0.9 wt % GPTS loading. Flexural as well as impact strength of the composite decreased with increase in GPTS loading by weight %. Dielectric strength of the co...
Materials Proceedings, 2021
Beeswax is a bioderived phase change material (PCM), with a phase change temperature of around 60... more Beeswax is a bioderived phase change material (PCM), with a phase change temperature of around 60 °C, which is suitable for thermoregulating hot served food packages. Beeswax should be shape stabilized for thermoregulation purposes. This paper has used recycled paperboard as the matrix for shape stabilizing beeswax. Beeswax showed melting enthalpy of 216.09 J/g and melting enthalpy of composite with beeswax content 45% was 102.51 J/g. Thermal conductivity of beeswax and composite with 45% beeswax was calculated with the T-history method as 0.285 and 0.157, respectively. To address concerns, such as toxicity, environment-friendly nature and recycling, beeswax-recycled paperboard composite should be considered as a promising candidate.
Graphical abstract 240 Review Paper Proton exchange membrane DMFC membrane Electrospinning • The ... more Graphical abstract 240 Review Paper Proton exchange membrane DMFC membrane Electrospinning • The function of a direct methanol fuel cell is highlighted. • Types of polymeric membrane used for DMFC are reviewed. • Electrospinning of nanofiber and their role in DMFC are discussed.
Uploads
Papers by Prakash Mahanwar