A5033865363- biodegradable polymer synthesis and properties
- Natural Fiber Reinforced Composites
- Polymer crystallization and properties
- Polymer Nanocomposites and Properties
- Bone Tissue Engineering Materials
- Electrospun Nanofibers in Biomedical Applications
- TiO2 Photocatalysis and Solar Cells
- Magnetic Properties and Synthesis of Ferrites
- Electrocatalysts for Energy Conversion
- Additive Manufacturing and 3D Printing Technologies
- Advanced battery technologies research
- Gas Sensing Nanomaterials and Sensors
- Transition Metal Oxide Nanomaterials
- Advanced Photocatalysis Techniques
- Nanocomposite Films for Food Packaging
- Advanced Chemical Sensor Technologies
- ZnO doping and properties
- Iron oxide chemistry and applications
- Supercapacitor Materials and Fabrication
- Microplastics and Plastic Pollution
- Electromagnetic wave absorption materials
- Multiferroics and related materials
- Pigment Synthesis and Properties
- Chemistry and Chemical Engineering
- Biodiesel Production and Applications
Universidade Federal de Campina Grande
2014-2025
Abstract Polypropylene (PP) blends with acrylonitrile‐butadiene‐styrene (ABS) were prepared using the styrene‐ethylene‐butylene‐styrene copolymer (SEBS) as a compatibilizing agent. The in co‐rotational twin‐screw extruder and injection molded. Torque rheometry, Izod impact strength, tensile heat deflection temperature (HDT), differential scanning calorimetry, thermogravimetry, electron microscopy properties investigated. results showed that there was an increase torque of PA6/ABS SEBS...
Abstract Poly(lactic acid) has been gaining prominence in academia and industry, mainly due to being a biopolymer biodegradable material. Nevertheless, its high fragility, work carried out order seek alternatives improve this drawback. Hence, aims evaluate the effect of vinyl acetate content using two types EVA (EVA 1 with 28% 2 19%) dynamically vulcanized PLA/EVA blends, several dicumyl peroxide (DCP) contents, that is, 0.3, 0.5, 0.7 phr. Blends were produced an internal mixer, tensile,...
Abstract Polypropylene/ Syagrus Cearensis fiber composites compatibilized with polypropylene‐graft‐maleic anhydride (PP‐g‐MA) and styrene(ethylene‐butylene)‐styrene copolymer (SEBS‐g‐MA) were successfully produced using a co‐rotating twin‐screw extruder followed by injection molding. The characterized X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM). mechanical properties determined Izod impact tensile testing. Thermal obtained...
Abstract Acrylonitrile‐EPDM‐styrene (AES) was applied as an impact modifier for poly(lactic acid) (PLA), and the combined effect of dicumyl peroxide (DCP) crosslinking annealing heat treatment investigated. Torque rheometry, melt flow index (MFI), mechanical properties (impact, tensile, Shore D hardness), X‐ray diffraction (XRD), infrared spectroscopy (FTIR), deflection temperature (HDT), differential scanning calorimetry (DSC), electron microscopy (SEM) were There a considerable torque...
The pollution caused by organic dyes in water bodies has become a major environmental issue, and removing such pernicious presents an immense challenge for the scientific community governments. In this study, sorbent based on nickel ferrite (NiFe2O4) fibers was fabricated solution blow spinning (SBS) method adsorptive removal of anionic Cong red (CR) dye. cubic–spinel structure magnetic porous nature NiFe2O4 were confirmed XRD, magnetometry, BET, SEM analyses. saturation magnetization...
Abstract This paper reports for the first time facile synthesis of hollow F‐doped SnO 2 nanofibers by solution blow spinning (SBS) and their ethanol sensing performance. The as‐prepared were characterized using scanning electron microscopy (SEM), x‐ray diffraction (XRD), Brunauer–Emmett–Teller (BET), Fourier‐transform infrared spectroscopy (FTIR), electrochemical impedance (EIS). gas behavior was investigated a homemade test chamber. results revealed preparation mesoporous fibers with...
In this work, blends based on poly (lactic acid) (PLA)/acrylonitrile-butadiene-styrene (ABS) compatibilized with maleic anhydride-grafted (SEBS-g-MA) were prepared in a co-rotational twin-screw extruder by varying the concentrations of compatibilizing agent. The influence agent morphology, mechanical, thermal, thermomechanical, and rheological properties materials was analyzed. effect annealing also investigated using injection-molded samples. X-ray diffraction (XRD) results proved that...
Nylon 6/acrylonitrile-butadiene-styrene nanocomposites were prepared by mixing in a molten state and injection molded for application electromagnetic interference shielding antistatic packaging. Multi-wall carbon nanotubes (MWCNT) maleic anhydride-grafted ABS compatibilizer incorporated to improve the electrical conductivity mechanical performance. The characterized oscillatory rheology, Izod impact strength, tensile thermogravimetry, current-voltage measurements, against interference,...
Abstract High‐performance blends based on polyamide 6 (PA6) were prepared using a hybrid mixture of acrylonitrile/EPDM/styrene (AES) and maleic anhydride grafted ethylene–propylene–diene (EPDM‐MA). Samples processed in twin‐screw extruder injection molded. The torque curves the PA6/AES/EPDM‐MA shifted to higher values with added EPDM‐MA, suggesting chemical interaction between components. melt flow index (MFI) results for confirmed intensification resistance. Intense infrared absorption...
A highly efficient NiFe2O4/TiO2 nanofibrous photocatalyst was prepared by a simultaneous solution blow spinning method. The hybrid fibers were characterized scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy, and magnetometry. photocatalytic properties evaluated using Crystal violet (CV) Congo red (CR) dyes under visible light irradiation. Fibers calcined at 600 ºC 700 showed the highest CV decolorization (77%). On other hand, for CR, best performance encountered...
Abstract Low‐density biopolyethylene (BioLDPE) ecocomposites added with particles of eggshell (ES) residue were produced using linear low‐density polyethylene grafted maleic anhydride (LDPE‐g‐MA) as a compatibilizing agent. BioLDPE/ES and BioLDPE/ES/LDPE‐g‐MA compounds processed in twin‐screw extruder, the specimens injection molded. Torque rheometry increased melt flow index reduced more prominently for BioLDPE/LDPE‐g‐MA biocomposite 20 phr ES, suggesting higher viscosity. Consequently,...
Abstract Magnetic and flexible nanocomposites of polyamide 6 (PA6)/styrene‐(ethylene‐butylene)‐styrene grafted with maleic anhydride (SEBS‐MA) were prepared using Ni‐Zn ferrite synthesized by combustion reaction. Thermal treatment was applied to the form a more crystalline phase. The processed in an internal mixer later injection molded. materials characterized torque rheometry, X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Izod impact strength, tensile magnetic...
In this work, polyamide 6 (PA6) properties were tailored and improved using a maleic anhydride-grafted acrylonitrile-butadiene-styrene terpolymer (ABS-MA). The PA6/ABS-MA blends prepared co-rotational twin-screw extruder. Subsequently, the extruded pellets injection-molded. Blends characterized by torque rheometry, Molau test, Fourier transform infrared spectroscopy (FTIR), impact strength, tensile Heat Deflection Temperature (HDT), Differential Scanning Calorimetry (DSC), Thermogravimetry...
Abstract Herein, we prepared toughened and electrical nanocomposites of polyamide 6 (PA6)/acrylonitrile‐butadiene‐styrene (ABS) compatibilized with maleic anhydride‐grafted acrylonitrile‐butadiene‐styrene (ABS‐MA). Functionalized multi‐walled carbon nanotubes (MWCNTf) were used as conductive nanofillers. Nanocomposites processed in an internal mixer injection molded. Torque rheometry, impact strength, elastic modulus, heat deflection temperature (HDT), differential exploratory calorimetry...
The role of the adhesion layer on pavements is to guarantee that structure works as a monolithic system, making it difficult for early cracks appear due fatigue or slipping. Thus, this work investigated factors influencing adherent behavior between micro-surfacing and asphalt concrete. Leutner shear strengths were analyzed at interface with bonding paint using RR-1 C, RR-2 RC1C-E emulsions three application rates (0.5 l/m², 0.75 1.0 l/m²). Tests performed temperatures (10 °C, 30 50 °C)....