Factors Influencing the Morphology of Cellulose Acetate Electrospun Fiber Mats

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This study investigated the effect of solvent composition, spinning rate and spinning time on the morphology of electrospun cellulose acetate (CA) fiber mats. To fabricate the fibers, 17 %w/v CA solutions prepared in the solvent consisting of acetone/N,N-dimethylacetamide (DMAc) at the ratios of 2:1, 1:1 and 1:2 (v/v) were subjected to electrospinning process under the constant electric field of 1.17 kV/cm. Scanning electron microscope imaging revealed that different morphologies of fibers obtained were bead-free fibers, fibers with spherical beads, and fibers with spindles, when the acetone/DMAc ratios of 2:1, 1:1 and 1:2 were used, respectively. In the aspect of spinning rate, it was found that the diameter of electrospun CA fibers, spindles or beads increased with the increasing spinning rate from 0.2 to 1 ml h-1. In addition, the thickness of electrospun CA fiber mats was directly proportional to the spinning time from 2 to 6 h and spinning rate. Interestingly, by using the same spinning time and rate, the bead-free fiber mats were thicker than mats containing fiber with spherical beads or with spindles. These findings provide useful information for the selection of suitable electrospinning parameters in order to obtain the fiber mat with desired characteristics for the intended purpose.

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Periodical:

Edited by:

Tawee Tunkasiri

Pages:

242-245

DOI:

10.4028/www.scientific.net/AMR.506.242

Citation:

S. Plianwong et al., "Factors Influencing the Morphology of Cellulose Acetate Electrospun Fiber Mats", Advanced Materials Research, Vol. 506, pp. 242-245, 2012

Online since:

April 2012

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$35.00

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