Abstract The objective of this study is to investigate the influence crystallization on shape memory effect (SME) poly (lactic acid) (PLA). Different thermal treatment times were applied PLA obtain different degrees crystallinity. Additionally, a sample was cooled rapidly an amorphous PLA. characterization techniques used in Fourier transform infrared spectroscopy, x-ray diffraction, Dynamic Mechanical Analysis, differential scanning calorimetry, optical microscopy, and SME evaluated by...

Abstract In this work, polylactic acid (PLA)/copolymer blends were prepared by melt blending. Ethylene‐glycidyl methacrylate (E‐GMA) and ethylene‐butyl acrylate‐maleic anhydride (EBA‐MAH) functional block copolymers used. A ternary blend of PLA/E‐GMA/EBA‐MAH was also studied. FTIR analyses evidenced the occurrence reactive compatibilization E‐GMA EBA‐MAH with PLA in binary due to reactivity GMA MAH groups terminal hydroxyl carboxyl PLA. Rheological measurements cross‐link reactions between...

This study investigates the influence of a ethylene-glycidyl methacrylate copolymer (EGMA) on shape memory effect (SME) and impact resistance PETG/EGMA thermoplastic vulcanizates (TPVs). The TPVs were prepared by dynamic vulcanization through simple melt blending polymers without need for curing agents such as DCP or sulfur. Simultaneously, in situ reactive compatibilization was achieved solely, any compatibilizer. SME, mechanical, thermomechanical, rheological, chemical, morphological...

ABSTRACT The rapid increase in waste electrical and electronic equipment (WEEE) poses a significant environmental challenge. To address this issue, initiatives promoting circular economy principles have emerged, such as utilizing recycled acrylonitrile butadiene styrene (ABSr) high‐impact polystyrene (HIPSr) from WEEE. This study evaluated the properties of virgin ABS (ABSv)/ABSr ABSv/HIPSr blends, with ABSr HIPSr obtained TV housing blend samples were prepared using filament extrusion,...

Abstract Depending on the conditions of polymer synthesis, polyethylene can exhibit various molecular structures, such as long and short-chain branching, which influence its weight distribution. The structure in blend significantly impacts properties, making it essential to study these effects blend’s final properties. Based above, this work aims investigate 1-hexene short chain branching (SCB) linear low-density (LLDPE) (LCB) (LDPE) polymers rheological properties processing blends with...

In this work, Polylactide/Biopolyethylene blends were developed. Although some studies have been carried out on polylactide/polyethylene blends, none of them has used polyethylene synthesized with raw material obtained from natural sources. Due to the incompatibility between polylactide and polyethylene, E-GMA EMA-GMA compatibilizers used. These present glycidyl methacrylate groups in their structure, which may react functional end-groups polylactide. To evaluate properties, characterized by...

Summary In this work, the effect of Ethylene‐Glycidyl Methacrylate (E‐GMA) and Ethylene‐Methyl Acrylate‐Glycidyl (EMA‐GMA) copolymers on mechanical morphological properties blends poly (lactic acid) (PLA) with biopolyethylene (BioPE) was evaluated. Uncompatibilized compatibilized were prepared by extrusion followed injection molding characterized Melt Flow Index (MFI), Fourier Transform Infrared Spectroscopy (FTIR), properties, Scanning (SEM) Transmission electron microscopy (TEM). The...

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 In this study, polylactide/ethylene-glycidyl methacrylate (PLA/E-GMA) binary blends were prepared via melt blending to investigate their potential for 4D printing. The aim was enhance shape memory effects (SMEs) and dynamic responses in the printed objects by exploring different compositions, printing parameters, temporary shapes. Several characterizations performed, including Fourier transform infrared spectroscopy, rheological properties, mechanical analysis (DMTA), scanning...

This work investigated the rheological, thermal and mechanical properties of High-Density Polyethylene/Linear Low-Density Polyethylene (HDPE/LLDPE) blends. The results rheological showed an increase in complex viscosity with LLDPE content miscibility between HDPE phases. X-Ray Diffraction (XRD) Differential Scanning Calorimetry (DSC) analyses a decrease degree crystallinity HDPE/LLDPE blends content. higher stability than Morphology analysis by SEM indicated plastic deformation content,...

In this work, acrylonitrile butadiene styrene (ABS) copolymer from electronic waste (e-waste) was used to produce filaments for application in 3D printing. Recycled ABS (rABS) e-waste blended with virgin (vABS) different concentrations. By differential scanning calorimetry, it observed that the values of glass transition temperatures vABS/rABS blends ranged between vABS and rABS. Torque rheometry analysis showed processability not compromised addition Rheological measurements viscosity...

De forma geral, diversos materiais entre eles poliméricos, cerâmicos e metálicos, podem apresentar propriedades de memória forma. O efeito é a propriedade onde os apresentam uma “memória” sua forma, ou seja, capacidade retornar inicial após sofrer algum tipo deformação, entretanto, esse depende da aplicação um estimulo externo para que o retorno aconteça, como calor, eletricidade, luz, outros. Esses são classificados inteligentes, pois respondem ordem química, física biológica. Este trabalho...

Elastomer materials featuring covalent cross-links deliver essential elastic performance for various applications. Despite their benefits, challenges like the need toxic chemical additives, emissions of harmful vapors, and difficulties in recycling these continue to pose environmental health concerns. Vitrimers emerge as an option, allowing recyclability vulcanized elastomers through use dynamic bonds. However, occur, it is generally necessary external catalysts, which generate negative side...

Abstract Fruit wastes from the agro‐industry may be used in preparation of polymer/natural fiber composites. In current scenario, there is a growing need for sustainable materials that can reduce environmental impact while maintaining or enhancing material properties. One promising approach incorporation natural fibers derived fruit waste into polymers, which aligns with global push toward eco‐friendly and circular economy solutions. This work was aimed at development filaments...