A5079332157- biodegradable polymer synthesis and properties
- Additive Manufacturing and 3D Printing Technologies
- Natural Fiber Reinforced Composites
- Carbon dioxide utilization in catalysis
- Polymer crystallization and properties
- Bone Tissue Engineering Materials
- Microplastics and Plastic Pollution
- Advanced Cellulose Research Studies
- 3D Printing in Biomedical Research
- Colorectal Cancer Surgical Treatments
- Stoma care and complications
- Nanocomposite Films for Food Packaging
- Anatomy and Medical Technology
- Polymer Nanocomposites and Properties
Lear (Spain)
2015-2022
ABSTRACT Blends of polylactide with poly(methyl methacrylate), PLA/PMMA, were prepared by a semi‐industrial twin screw extruder and afterwards injection molded. studied using different techniques as Fourier Transform Infrared Spectroscopy (FTIR), Dynamic Mechanical Analysis (DMA), Differential Scanning Calorimetry (DSC), Electron Microscopy (SEM), mechanical properties means tensile impact tests, also studied. This work helped better understanding apparently contradictory results reported in...
This papers presents a comparative study of three different 3D scanning modalities to acquire meshes stoma barrier rings from ostomized patients. Computerized Tomography and Structured light methods were the digitization technologies studied in this research. Among Light systems, Go!Scan 20 Structure Sensor chosen as handheld scanners. Nineteen patients took part study, starting scans acquisition until printed ostomy patches validation. mesh processing, generation comparison was carried out...
ABSTRACT The effect of the addition poly(styrene ‐co‐ glycidyl methacrylate) P(S GMA) copolymer on properties melt blended polylactide/poly(methyl (PLA/PMMA) 80/20 (wt %) composition was studied. In literature high ductility levels were achieved by blending PLA with different additives. However, gained counter balanced drastic drops in strength and modulus values. novelty this work preparation PLA‐based blends polylactide content higher than 75 wt % which showed an impact resistance value...
ABSTRACT Poly(hydroxybutyrate‐ co ‐valerate) (PHBV) is a biopolymer that has gained lot of attention because its biodegradability, good thermal resistance, and balanced mechanical properties with respect to some commodity plastics. However, it presents two big limitations hinder potential application in replacing plastics for rigid injected parts: high cost low toughness. Aiming at overcoming these limitations, the use additives PHBV matrix was explored: thermoplastic polyurethane (TPU) as...
Poly(3-hydroxybutyrate-co-3-valerate), PHBV, is a bacterial thermoplastic biopolyester that possesses interesting thermal and mechanical properties. As it fully biodegradable, could be an alternative to the use of commodities in single-use applications or those intended for composting at their end life. Two big drawbacks PHBV are its low impact toughness high cost, which limit potential applications. In this work, we proposed PHBV-based compound with purified α-cellulose fibres polyurethane...
ABSTRACT Polylactide/poly(methyl methacrylate) blends with high polylactide content (100/0, 95/5, 90/10, 85/15, and 80/20 wt %) were prepared in presence of poly(styrene‐co‐glycidyl copolymer by reactive melt‐blending. The behavior these was studied torque monitoring while blending the thermal properties, mechanical morphological study produced carried out differential scanning calorimetry, thermogravimetric analysis, dynamic tensile test, impact electron microscopy. In situ during blend...
Moving toward a more sustainable production model based on circular economy, biopolymers are considered as one of the most promising alternatives to reduce dependence oil-based plastics. Polyhydroxybutyrate-co-valerate (PHBV), bacterial biopolyester from polyhydroxialkanoates (PHAs) family, seems be an attractive candidate replace commodities in many applications such rigid packaging, among others, due its excellent overall physicochemical and mechanical properties. However, it presents...
This work identifies and describes different material-scaffold geometry combinations for cartilage tissue engineering (CTE). Previously reported potentially interesting scaffold geometries were tuned printed using bioresorbable polycaprolactone poly(lactide-b-ethylene) block copolymer. Medical grades of both polymers 3D with fused filament fabrication technology within an ISO 7 classified cleanroom. Resulting scaffolds then optically, mechanically biologically tested. Results indicated that...
The interest on poly(lactic acid) (PLA)/poly(methyl methacrylate) (PMMA) blends has increased during the last years due to their promising properties. novelty of current work focuses preparation and characterization biocomposites based PLA/PMMA matrix NaOH-treated sisal fibers. effect addition treated fibers physico-mechanical properties high polylactide content composites was studied. For this purpose, blend (80/20 wt%) prepared by melt-blending reinforced with different fiber contents....
With the aim to open new applications possibilities novel biocomposites based on PLA/PMMA matrix and reinforced with sisal fibers, it was studied effect of water immersion aging biocomposite tensile properties. In current study evidenced importance annealing process fiber/matrix adhesion mechanical performance composites after immersing in for around 7 months. The presence copolymer led minor extent damage properties prepared biocomposites. Results obtained suggested that although amount...
Abstract The thermomechanical properties of poly(lactide) (PLA) are strongly related to its semicrystalline microstructure and morphology. Thermal annealing is a strategy improve the crystallinity PLA. However, different techniques specimen types needed for each kind characterization could lead misleading conclusions. In this work, annealed samples three PLA grades with molecular weights were studied by DSC, wide angle X‐ray scattering polarized optical microscopy (POM) results their impact...
Abstract The useful lifespans of a poly(lactic acid)/poly(methyl methacrylate) (PLA/PMMA) 80/20 (wt%) blend and acid)/dioctyl adipate/talc (PLA/DOA/talc) compound have been estimated by applying an Arrhenius relationship to the evolution mechanical properties whilst ageing. studied PLA based systems showed lower activation energies ( ca 8 − 20 kJ mol −1 ) than those reported in literature for other synthetic thermoplastics, indicating thermo‐oxidative stability. However, both were...
The main aim of this work is to study the importance coupling agent on tensile and thermomechanical performance annealed composites based poly (lactic acid)/poly (methyl methacrylate) matrix sisal fiber bundles. As (styrene‐co‐glycidyl copolymer was used. Results obtained in current suggested that presence crucial form a strong adhesion between fibers polymeric consequently improve both properties after annealing process. It must highlight estimated heat deflection temperature (HDT)...