Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/18910
Title: The potential use of electrospun polylactic acid nanofibers as alternative reinforcements in an epoxy composite system
Authors: Dong, Y
Mosaval, T
Haroosh, HJ
Umer, R
Takagi, H
Lau, KT 
Keywords: Biopolymers
Electrospinning
Fibers
Mechanical properties
Nanocomposites
Issue Date: 2014
Publisher: John Wiley & Sons
Source: Journal of Polymer Science, Part B: Polymer Physics, 2014, v. 52, no. 9, p. 618-623 How to cite?
Journal: Journal of polymer science. Part B, Polymer physics 
Abstract: This pilot study elaborates the development of novel epoxy/electrospun polylactic acid (PLA) nanofiber composites at the fiber contents of 3, 5, and 10 wt % to evaluate their mechanical and thermal properties using flexural tests and differential scanning calorimetry (DSC). The flexural moduli of composites increase remarkably by 50.8 and 24.0% for 5 and 10 wt % fiber contents, respectively, relative to that of neat epoxy. Furthermore, a similar trend is also shown for corresponding flexural strengths being enhanced by 31.6 and 4.8%. Fractured surface morphology with scanning electron microscopy (SEM) confirms a full permeation of cured epoxy matrix into nanofiber structures and existence of nondestructive fibrous networks inside large void cavities. The glass transition temperature (Tg) of composites increases up to 54-60 °C due to embedded electrospun nanofibers compared to 50 °C for that of epoxy, indicating that fibrous networks may further restrict the intermolecular mobility of matrix in thermal effects.
URI: http://hdl.handle.net/10397/18910
ISSN: 0887-6266
EISSN: 1099-0488
DOI: 10.1002/polb.23467
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