Pcl
Mostrando 13-24 de 317 artigos, teses e dissertações.
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13. Toughening of bio-PE upon addition of PCL and PEgAA
Abstract Researches of polymer blends based on biological and biodegradable polymers appear as a viable alternative to develop environmentally friendly materials. Therefore, the aim of this research was to produce compounds made with biological polyethylene, i.e., Biopolyethylene, Bio-PE, added to the biodegradable Polycaprolactone (PCL) and functionalized b
REM, Int. Eng. J.. Publicado em: 19/06/2019
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14. Compatibility and characterization of Bio-PE/PCL blends
Abstract In this work, blends based on environmentally friend polymers such as Biopolyethylene (Bio-PE), Polycaprolactone (PCL) and Polyethylene graft maleic anhydride (PEgMA) added as compatibilizer agent were produced by conventional extrusion, aiming to produce bio-blends with synergic properties at low processing cost, being at same time non-polluting an
Polímeros. Publicado em: 10/06/2019
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15. Gamma irradiation effects on polycaprolactone/zinc oxide nanocomposite films
Abstract Polycaprolactone (PCL) to which has been added zinc oxide nanoparticles (ZnO NPs) produces nanocomposites (PCL/ZnO NCs). These nanocomposites can be used in biomedical applications and in the food packaging sector. However, for these materials to be used in these applications, they need to be sterilized. For this, gamma irradiation is the most comm
Polímeros. Publicado em: 21/03/2019
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16. Morphological, thermal and bioactivity evaluation of electrospun PCL/β-TCP fibers for tissue regeneration
Abstract Electrospinning is a simple and low-cost way to fabricate fibers. Among the various polymers used in electrospinning, polycaprolactone (PCL) stands out due to its excellent biodegradability and biocompatibility. However, PCL has some limitations such as low bioactivity, hydrophobic surface, and long in vivo degradation. Calcium phosphate ceramics h
Polímeros. Publicado em: 18/03/2019
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17. Tayloring PS/PCL blends: characteristics of processing and properties
Abstract Blends of Polystyrene (PS) and Poly(ε-caprolactone) (PCL) were twin screw extruded, two PSs, with low and high melt flow rate (MFR) were used and their feasibility within PCL investigated by means of torque rheometry, mechanical tests, heat deflection temperature (HDT) and scanning electron microscopy (SEM); predictive models were utilized to evalu
REM, Int. Eng. J.. Publicado em: 2019-03
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18. Effect of active antimicrobial films on the growth of pathogenic bacteria in Mantı
Abstract The current study assessed antimicrobial films for use in active food packaging. Mantı, a tortellini-like Turkish food, was packaged with antimicrobial films to extend refrigerated storage time at 4 °C. Polycaprolactone (PCL) was separately incorporated with cinnamaldehyde (CNMA) and pomegranate methanolic extract (PME) to form antimicrobial diff
Food Sci. Technol. Publicado em: 13/12/2018
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19. PCL/ZnO Bio-friendly Films as Food Packaging Material.Thermal and morphological analysis
ABSTRACT Films of Poly(?-caprolactone) (PCL) and PCL/Zinc Oxide (ZnO) were obtained by solution processing. Thermal behaviour and morphological structure were analysed by means of Thermogravimetry (TGA), Differential Scanning Calorimetry (DSC), Optical Microscopy (OM) and Scanning Electron Microscopy (SEM). The addition of ZnO to PCL decreased the degradatio
Matéria (Rio J.). Publicado em: 06/12/2018
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20. Efeito das variáveis reacionais na síntese de um polímero biodegradável funcionalizado: PCL-g-MA
RESUMO A Poli(ɛ-caprolactona) (PCL) é um termoplástico sintético biodegradável que tem sido foco de estudos em novos “polímeros verdes”, devido principalmente as suas boas propriedades mecânicas, o que a torna competitiva com outros polímeros convencionais e biopolímeros, tais como: Poli(ácido lático) (PLA), Poli(hidroxibutirato) (PHB). O obje
Matéria (Rio J.). Publicado em: 06/12/2018
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21. Production of fibrous polymer scaffolds for tissue engineering using an automated solution blow spinning system
Abstract Introduction Solution blow spinning (SBS) and airbrushing are two techniques that can be used as alternatives to electrospinning in the production of fibrous scaffolds for tissue engineering (TE). SBS seems particularly interesting due to its versatility, however, it has not been much explored and no automated SBS systems were found in the literat
Res. Biomed. Eng.. Publicado em: 22/10/2018
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22. Structural equation modeling of psychopathic traits in Chilean female offenders using the Self-Report Psychopathy-Short Form (SRP-SF) Scale: a comparison of gender-based item modifications versus standard items
Objective: To examine the utility of the Self-Report Psychopathy-Short Form (SRP-SF) to assess psychopathic traits in female offenders and to test gender-based item modifications. Method: A South American sample of female offenders (n=210) was assessed with the Psychopathy Checklist-Revised (PCL-R); 110 subjects also completed the standard SRP-SF, while 10
Braz. J. Psychiatry.. Publicado em: 29/09/2018
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23. Fabricación de recubrimientos compuestos de Bioglass®/poli(ɛ-capro-lactona) obtenidos por co-deposición electroforética sobre acero inoxidable
ABSTRACT In this work two kinds of "soft coatings" were obtained by co-electrophoretic deposition technique (co-EPD). In all cases a bioglass was used as inorganic phase, and a commercial poly(ɛ-caprolactone), (PCLC), and an anionic synthesized PCL modified with maleic anhydride (PCLS) were used as organic phase. To ensure an adequate coating over the metal
Matéria (Rio J.). Publicado em: 19/07/2018
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24. Photodegradation Mechanisms on Poly(ε-caprolactone) (PCL)
Photodegradation of PCL was performed exposing injected specimens to ultraviolet radiation (UV-B) up to 9 weeks. Photodegradated PCL specimens were tested by Differential Scanning Calorimetry (DSC), Infrared Spectroscopy (FTIR), mechanical properties, Optical Microscopy (MO) and Scanning Electron Microscopy (SEM).Upon exposure decrease in elongation at break
Mat. Res.. Publicado em: 16/07/2018