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  • Open Access

    RETRACTION

    Retraction: Fabrication and Comparative Properties of Sustainable Epoxy Methacrylate of Bisphenol-C-Jute/Treated JuteNatural Fibers Sandwich Composites: Part-II

    JPM Editorial Office

    Journal of Polymer Materials, Vol.41, No.3, pp. 205-205, 2024, DOI:10.32604/jpm.2024.058921 - 30 September 2024

    Abstract This article has no abstract. More >

  • Open Access

    ARTICLE

    Quasi-Static and Low-Frequency Dynamic Mechanical Analysis Characterization of Graphene Nanoplatelets/Glass Fabric/Bisphenol-A-Based Epoxy Nanocomposites

    Santhanakrishnan Mamallan1, Venkateshwaran Narayanan1,*, Canungo Bhimarao Ragothaman2

    Journal of Polymer Materials, Vol.41, No.3, pp. 105-116, 2024, DOI:10.32604/jpm.2024.056744 - 30 September 2024

    Abstract Glass fabric/polymer composites are widely used in various industrial applications due to their lightweight, exceptional strength, and fatigue resistance. Graphene nanoplatelets, a recently developed type of carbon material, stand out as unique nanofillers due to their 2D quantum confinement and expansive surface area within a polymer matrix. These features make them more effective than traditional carbon nanofillers at enhancing a range of properties. In this study, 3-weight % of graphene nanoplatelets with epoxy resin were used for investigation by varying sonication durations (0, 20, 40, and 60 min) using an ultrasonic bath sonicator. The laminates More >

  • Open Access

    ARTICLE

    Effect of Thermal Ageing on the Thermal and Mechanical Properties of Polypropylene and Polypropylene Micro-Composites

    Rachid Bouregba1,2, Bel Abbes Bachir Bouiadjra2,*, Mohamed Mokhtar Bouziane3, Mohamed Amine Bellali2, Mokadem Salem2

    Journal of Polymer Materials, Vol.41, No.3, pp. 143-158, 2024, DOI:10.32604/jpm.2024.056385 - 30 September 2024

    Abstract The use of polypropylene composites in various industrial fields has expanded considerably in recent years. A number of researches have been carried out to characterize the performance of polypropylene and its composites. However, the effects of ageing on the long-term behaviour of this thermoplastic are not well understood. The purpose of this study is to analyse the consequences of thermal degradation on the thermal and mechanical properties of three distinct materials: virgin Polypropylene (PP), virgin Polypropylene + talc (PP/talc), and virgin Polypropylene + Carbon Black (PP/CB) micro-composites. Specimens of these materials underwent exposure in an… More >

  • Open Access

    ARTICLE

    Effect of Selective Laser Sintering Polyamide-12 Powder as a Filler in Glass Fiber Reinforced Epoxy Composites

    Ravikumar Karthikeyan, Subbiah Rajkumar*, Balasundaram Ravi

    Journal of Polymer Materials, Vol.41, No.3, pp. 131-141, 2024, DOI:10.32604/jpm.2024.055989 - 30 September 2024

    Abstract In this study, the Polyamide-12 (PA-12) powdered material in the Selective Laser Sintering (SLS) process has been incorporated as the filler in the composite material to enhance its properties. The PA-12 powder has been made into a form of filament and is primarily used in the Fused Deposition Modelling (FDM) process. The PA-12 has been used with epoxy resin and glass fiber with different proportions. The characterization of materials, including the validation of the presence of PA-12 filler with epoxy, has been evidenced using Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), and Thermogravimetric More >

  • Open Access

    ARTICLE

    Physio-Mechanical Characterization of Recycled Polyethylene Terephthalate and Soda-Lime Glass Waste Composite for Roof Tile Application

    Yusuf Olanrewaju Busari1,2,*, Issah Sadiq Ibrahim1, Kabir S. Ajao1, Norliana Mohd Abbas2, James Obafemi Adegbola1, Hassan Kobe Ibrahim3, Abdallah Reghioua4, Yusuf Lanre Shuaib-Babata1, Rachael Oluwatoyosi Idowu1

    Journal of Polymer Materials, Vol.41, No.3, pp. 117-129, 2024, DOI:10.32604/jpm.2024.055895 - 30 September 2024

    Abstract The research paper focuses on manufacturing composite materials from waste polyethylene terephthalate (PET) reinforced with soda-lime glass to provide a lightweight, less brittle, and high rust resistance when exposed to hazardous environment. In developing nations such as Nigeria, there is a significant surge in the volume of bottled water and other packaging materials used in households, leading to a rapid accumulation of biodegradable waste, that presents concerns such as the creation of landfills and health issues. PET are thermoplastic polymer that can be melted and shaped into various objects. This study involves the incorporation of… More >

  • Open Access

    ARTICLE

    Synthesis and Characterization of Chitosan/Guar Protein Blended New Membrane with Enhanced Properties for Potential Applications

    Anuraag Moturi, Dharmesh R. Chejara*

    Journal of Polymer Materials, Vol.41, No.3, pp. 179-190, 2024, DOI:10.32604/jpm.2024.055887 - 30 September 2024

    Abstract A chitosan and guar protein isolate blend conjugate (Ch/GPI-Glu) based membrane has been designed and studied for its possible interaction with this biopolymer mixture. The designed conjugate chitosan/guar protein isolate blended membrane was investigated for its structural features using Fourier Transform Infrared Spectroscopy (FTIR), Thermal Gravimetric Analysis (TGA), X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) analyses. IR Spectroscopic data suggested that chitosan and guar protein isolate contributed to a specific intermolecular interaction. The designed membrane was water-insoluble and it exhibited strong polymer–protein interaction. Further, the membrane was also found to have a smooth morphology More >

  • Open Access

    ARTICLE

    Mechanical and Tribological Behavior of Graphene Oxide Supported Aramid Fiber Reinforced Epoxy Resin

    Yuanyuan Feng1, Bingli Pan1,*, Hongyu Liu1,2, Yuxuan Zhou1, Xiaofan Ding1, Xinyu Yuan1

    Journal of Polymer Materials, Vol.41, No.3, pp. 191-203, 2024, DOI:10.32604/jpm.2024.055558 - 30 September 2024

    Abstract In this paper, knitted aramid fiber (AF) was used as the support, and graphene oxide (GO) was loaded on the support by the polydopamine (PDA) method. Epoxy resin (EP) was poured to obtain composite materials. The tribological and mechanical properties of the composites were tested, and the wear surface of the composites was characterized by scanning electron microscopy (SEM) and three-dimensional morphology. The results show that knitted AF can markedly improve the mechanical properties of the composites. As a two-dimensional material, GO plays an effective lubrication role, and GO effectively enhances the tribological properties of… More >

  • Open Access

    ARTICLE

    Enhancing the Shelf Life of Edible Musa Acuminate with Biopolymer Coating

    Manivasagam Vishwa Rohini1,#, Sathish Kiruba1, Danniel Santhanaraj1, Prakash Priyanka Nair1, P. Sudhakara2,*, Jujhar Singh3, Balamurugan Rathinam4,*, Vanaraj Ramkumar5,6,#

    Journal of Polymer Materials, Vol.41, No.3, pp. 159-178, 2024, DOI:10.32604/jpm.2024.054801 - 30 September 2024

    Abstract The Cavendish banana, Musa acuminata, is a climacteric fruit that ripens quickly after harvest. Due to their high perishability and susceptibility to disease, bananas have substantial postharvest losses. After harvesting, it is important to extend the bananas’ shelf life. Unique coating gel solutions based on glycerol and ascorbic acid were developed to accomplish this. Chitosan mixed with glacial acetic acid, lactic acid, and sodium alginate were among the gel solutions in these combinations. The goal was to improve banana preservation while maintaining freshness and quality by implementing innovative formulations and techniques. The fruits are hand-dried and… More >

  • Open Access

    ARTICLE

    Genome-Wide Identification and Expression Analysis of GS and GOGAT Gene Family in Pecan (Carya illinoinensis) under Different Nitrogen Forms

    Zhenbing Qiao1,2, Mengyun Chen1,2, Wenjun Ma1,2, Juan Zhao1,2, Jiaju Zhu1,2, Kaikai Zhu1,2, Pengpeng Tan1,2, Fangren Peng1,2,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.9, pp. 2349-2365, 2024, DOI:10.32604/phyton.2024.056655 - 30 September 2024

    Abstract Ammonium nitrogen (NH4+-N) is one of the main forms of nitrogen absorbed and utilized by plants, and mastering the regulatory mechanism of plant ammonium assimilation is a key way to improve the efficiency of plant nitrogen utilization. Glutamine synthetase (GS) and glutamate synthase (GOGAT), two key enzymes for ammonium assimilation, have rarely been studied in pecan. In this study, GS and GOGAT family members of pecan were identified and analyzed using bioinformatics methods. The results indicated that 6 GS and 4 GOGAT genes were identified. The cis-acting elements can be broadly categorized into light-responsive, hormone-responsive, and stress-responsive elements.… More >

  • Open Access

    ARTICLE

    High Throughput Image Analysis between Seed Traits Opens New Breeding Avenues in Tartary Buckwheat Germplasm

    Bo Hwan Kim1,#, Sheikh Mansoor2,#, Gyung Deok Han3, Ji Eun Park4, Wook Kim1,*, Yong Suk Chung2,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.9, pp. 2339-2347, 2024, DOI:10.32604/phyton.2024.056439 - 30 September 2024

    Abstract Recognizing the variation of genetic resources is the first step in selection. One of the most important variations in grain crops is the uniformity of seed grain weight, which can be converted into seed size. However, it has been challenging since it needs high labor costs and time to measure it on a large scale. The current study used an image analysis technique to measure the grain seed area of about 100 seeds per accession with 64 germplasm of Tartary buckwheat (Fagopyrum tataricum) to study variation among and within them. To understand the nature of variation, More >

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