A5071748777- biodegradable polymer synthesis and properties
- Natural Fiber Reinforced Composites
- Polymer Nanocomposites and Properties
- Polymer crystallization and properties
- Nanocomposite Films for Food Packaging
- Textile materials and evaluations
- Microplastics and Plastic Pollution
- Mechanical Behavior of Composites
- Additive Manufacturing and 3D Printing Technologies
- Mechanical Engineering and Vibrations Research
- Advanced Cellulose Research Studies
- Clay minerals and soil interactions
- Polymer composites and self-healing
- Tribology and Wear Analysis
- Plant Surface Properties and Treatments
- Material Properties and Processing
- Polymer Foaming and Composites
- Thermal and Kinetic Analysis
- Concrete and Cement Materials Research
- Electrospun Nanofibers in Biomedical Applications
- Rheology and Fluid Dynamics Studies
- Polymer Science and PVC
- Epoxy Resin Curing Processes
- Bamboo properties and applications
- Recycling and Waste Management Techniques
Universidade Federal de Campina Grande
2015-2024
Universidade Federal do Piauí
2016
Instituto de Tecnologia de Pernambuco
2015
Materia (United States)
2005-2012
Universidade Federal da Paraíba
1992-2011
Departamento de Ciência e Tecnologia
2005-2011
Universidade Estadual da Zona Oeste
2011
Centro de Tecnologias Estratégicas do Nordeste
2011
Associação Brasileira de Antropologia
2005
University of Waterloo
1984
Compression molded biodegradable films based on poly(butylene succinate) (PBS) and adipate-co-terephthalate) (PBAT) at varying weights were prepared, their relevant properties for packaging applications are here reported. The melt rheology of the blends was first studied, binary PBS/PBAT exhibited marked shear thinning complex thermoreological behavior, due to formation a co-continuous morphology in 50 wt% blend. characterized by infrared spectroscopy (FTIR), differential scanning...
Plain weave hybrid ramie–cotton fabrics were used as reinforcement in polyester matrix composites. The tensile strength of the composites was determined a function volume fraction and orientation ramie fibers. Composites tested with fibers oriented parallel, (0), to axis various stacking sequence configurations (0/90). results obtained showed that main parameter governing properties parallel direction axis. contribution cotton shown be minimal. Indeed, for (0) follow common rule mixtures...
Babassu was studied as a vegetable filler in blend consisting of polybutyrate adipate terephthalate and polylactic acid aiming at preparation bio-based biodegradable films by solvent casting. The morphology, thermal, mechanical properties were investigated with optical, thermoanalytical, spectroscopic methods correlated the sample setup. Although only laboratory scale for film production has been applied this work, results suggest that composite PBAT/PLA 10% may be suitable material...
It is well known that the inadequate disposal of polymeric materials causes significant environmental problems. Recycling and use biodegradable polymers are among methods used to minimize these However, low mechanical performance majority hinders direct substitution synthetic polymers, such as polyethylene (PE), polypropylene (PP) polystyrene (PS), by ones. Blending a way develop recyclable products with good set properties. Therefore, in this work we investigate influence extrusion cycles...
The development of polymeric biocomposites containing natural fibers has grown over the years due to properties achieved and its eco-friendly nature. Thus, involving a polymer from renewable source (Biopolyethylene (BioPE)) babassu (BFs), compatibilized with polyethylene grafted maleic anhydride (MA) acrylic acid (AA) (PE-g-MA PE-g-AA, respectively) were obtained using melt mixing injection molded into tensile, impact, HDT specimens. Babassu fiber was characterized Fourier transform infrared...
Abstract Mechanical properties (tensile, flexural, impact, and dynamic mechanical thermal analysis) of novolac type phenolic composites reinforced with jute/cotton hybrid woven fabrics were investigated as a function fiber orientation roving/fabric characteristics. Scanning electron microscopy (SEM) was carried out to investigate the fiber‐matrix adhesion. Results showed that composite are strongly influenced by test direction rovings/fabric The anisotropy degree shown increase angle depend...
This contribution is concerned with degradation and chain extension in poly(butylene-adipate-terephthalate), PBAT, compounded a laboratory internal mixer an epoxydic extender additive. Weight-average mass change during melt processing was estimated from temperature-torque-time data recorded by the equipment. The effect of additive found to be strongly dependent on temperature, weakly concentration. Molar more than doubled at 230°C 2% Long induction times catastrophic failure mix,...
Growing demands for the use of biodegradable polymer films in food packaging have led to studies on several sources non-conventional starches. Corn starch (CS), is most investigated source due its abundance and stability under processing manufacturing conditions. Other such as rice, potatoes cassava also been and, more recently, babassu mesocarp (BMS), native Northeastern Brazil, has explored innovative potential manufacture films. In this work we extracted characterized contained compared...
Tensile and impact properties of compression molded unsaturated polyester/jute composites were investigated as a function fiber content orientation. Both unidirectional with 0-50% weight randomly distributed short-fiber composite 30% w/w manufactured. The tested along transversally to the axis. Higher values for all mechanical obtained when long-fiber oriented axis, even at low (10% w/w). tensile behavior qualitatively followed theoretical isostrain isostress behaviors, tests conducted...
Blending of biodegradable polymers in combination with low-price organic fillers has proven to be a suitable approach produce cost-effective composites order address pollution issues and develop products superior mechanical properties. In the present research work PBAT/PHB/Babassu 25, 50, 75% each polymer 20% Babassu were produced by melting extrusion. Their thermal, mechanical, morphological behavior was investigated differential scanning calorimetry (DSC), tensile testing, electron...
Abstract This research aims to evaluate the application of babassu mesocarp starch in development polymeric films compared corn widely exploited due its abundance and worldwide availability. Thus, based on blends poly(lactic acid)/poly(butylene adipate-co-terephthalate) (PLA/PBAT) containing commercial or extracted from were developed by means flat extrusion. The characterized results indicate that color, wettability surfaces depend type added. Films present rougher, opaque with greater...
Abstract In this work the interfacial properties of polyester/vegetable fiber composites were analyzed by flexural testing. The compressive/tensile (σ) and shear (τ) stresses determined for each composite in function span‐to‐depth ratio (λ). general behavior was similar to that reinforced with DuPont Kevlar fiber, i.e., a maximum σ stress value is obtained. Flexural test validity determining Young's moduli, E 11 G 12 , ascertained. modulus agreed expected from rule mixtures lowest content....