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dc.contributor.advisorAlmodóvar-Montanez, Jorge
dc.contributor.authorRamos-Aviles, Vanessa H.
dc.description.abstractElectrospinning is a process for generating ultrathin fibers from a polymeric fluid using an electric field. It is relatively easy to implement, but it is itself complex due to the many parameters that govern the formation of the fibers. In this project, nanofibers from collagen dissolved in acetic acid were produced. The effect of flow rate (Q) and voltage (V) on diameter fiber (D) was evaluated, and a prediction model of the fiber diameter was identified. Also, an expression for the fiber diameter as a function of flow rate was found. Results reveal that fibers obtained had a uniform morphology with no beads-like defects. The flow rate significantly effects the fiber diameter. There is an almost linear increase on the average fiber diameter with the increase of the flow rate. The voltage has low influence over fiber diameter, at the process conditions to which experimental trials were carried out. The identified model predicts the fiber diameter with an average error of 16.75% and, fiber diameter varies proportionally to Q1/6.
dc.description.abstractEl electrohilado es un proceso que usa un campo eléctrico para producir fibras ultrafinas de un fluido polimérico. Es fácil de implementar, pero de naturaleza compleja por los múltiples parámetros que influyen en la formación de las fibras. En este proyecto se generaron fibras de colágeno disuelto en ácido acético usando electrohilado, se evaluó el efecto del voltaje y la velocidad de flujo en el diámetro de las fibras obtenidas y se identificó una expresión para el diámetro de fibra en función de dichas variables. Las fibras resultantes fueron uniformes, sin defectos en forma de abalorios ovalados. La velocidad de flujo tiene una influencia sobre el diámetro estadísticamente significativa. Además existe un incremento casi lineal del diámetro con el incremento de la velocidad de flujo. Mientras que el voltaje tiene menor influencia sobre el diámetro de fibra a las condiciones experimentales trabajadas. El modelo identificado en la literatura predice el diámetro de fibra con un error de 16.75% y los datos experimentales varían proporcionalmente a la velocidad de flujo elevada a un 1/6.
dc.description.sponsorshipUniversity of Puerto Rico at Mayaguez for financial supporten_US
dc.titleEvaluation and modulation of electrospun collagen nanofiber diameteren_US
dc.typeProject Reporten_US
dc.rights.licenseAll rights reserveden_US
dc.rights.holder(c) 2016 Heleine Vanessa Ramos Avilezen_US
dc.contributor.committeeTorres Lugo, Madeline
dc.contributor.committeeLatorre Esteves, Magda
dc.contributor.representativeCancelos, Silvina Engineeringen_US
dc.contributor.collegeCollege of Engineeringen_US
dc.contributor.departmentDepartment of Chemical Engineeringen_US

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    Items included under this collection are theses, dissertations, and project reports submitted as a requirement for completing a degree at UPR-Mayagüez.

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