Preparation and Mechanical Characterization of Electrospun Composite Membranes

碩士 === 國立成功大學 === 生物醫學工程學系 === 101 === Previous studies showed that the mechanical properties of electrospun membranes depend on fiber orientations and fiber alignment. In order to better understand the effect of the fiber orientations and fiber alignment on the mechanical properties of the membrane...

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Main Authors: Shou-ShengHsu, 許守昇
Other Authors: Jin-Jia Hu
Format: Others
Language:zh-TW
Published: 2013
Online Access:http://ndltd.ncl.edu.tw/handle/39453108731371558100
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spelling ndltd-TW-101NCKU51141512016-05-22T04:33:40Z http://ndltd.ncl.edu.tw/handle/39453108731371558100 Preparation and Mechanical Characterization of Electrospun Composite Membranes 製備電紡複合薄膜及定量描述其機械性質 Shou-ShengHsu 許守昇 碩士 國立成功大學 生物醫學工程學系 101 Previous studies showed that the mechanical properties of electrospun membranes depend on fiber orientations and fiber alignment. In order to better understand the effect of the fiber orientations and fiber alignment on the mechanical properties of the membranes, we used three materials (PU, PCL, and PLA) to fabricate the electrospun membranes. On the other hand, there are two methods of making composite membranes by the electrospinning, namely blend electrospinning and co-electrospinning. In this study, we used two materials (PCL and PLA) to fabricate composite membranes and examine the differences between the two methods. We collected the electrospun fibers on a grounded rotating drum with varying speeds to prepare membranes with varying fiber alignments. By stacking two membranes with aligned fibers, we made membrane with special direction. We used biaxial mechanical testing to examine the mechanical properties. The results showed that when the fibers were better aligned, the difference in stiffness between the two-axis of the membrane were greater. However, the membrane of the two-axis mechanical properties in off-axis fiber angles, 30° was the same. The stiffness of membranes with highly aligned fibers with off-axis fiber angles, 45° is higher than that of membranes the moderately aligned fibers with off-axis fiber angles, 45°. The composite membranes made by the methods had significantly different mechanical properties even with the same composite ratio. The mechanical properties of the composite membrane made by blend electrospinning were closer to PLA than the composite membrane made by co-electrospinning membranes. Jin-Jia Hu 胡晉嘉 2013 學位論文 ; thesis 54 zh-TW
collection NDLTD
language zh-TW
format Others
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description 碩士 === 國立成功大學 === 生物醫學工程學系 === 101 === Previous studies showed that the mechanical properties of electrospun membranes depend on fiber orientations and fiber alignment. In order to better understand the effect of the fiber orientations and fiber alignment on the mechanical properties of the membranes, we used three materials (PU, PCL, and PLA) to fabricate the electrospun membranes. On the other hand, there are two methods of making composite membranes by the electrospinning, namely blend electrospinning and co-electrospinning. In this study, we used two materials (PCL and PLA) to fabricate composite membranes and examine the differences between the two methods. We collected the electrospun fibers on a grounded rotating drum with varying speeds to prepare membranes with varying fiber alignments. By stacking two membranes with aligned fibers, we made membrane with special direction. We used biaxial mechanical testing to examine the mechanical properties. The results showed that when the fibers were better aligned, the difference in stiffness between the two-axis of the membrane were greater. However, the membrane of the two-axis mechanical properties in off-axis fiber angles, 30° was the same. The stiffness of membranes with highly aligned fibers with off-axis fiber angles, 45° is higher than that of membranes the moderately aligned fibers with off-axis fiber angles, 45°. The composite membranes made by the methods had significantly different mechanical properties even with the same composite ratio. The mechanical properties of the composite membrane made by blend electrospinning were closer to PLA than the composite membrane made by co-electrospinning membranes.
author2 Jin-Jia Hu
author_facet Jin-Jia Hu
Shou-ShengHsu
許守昇
author Shou-ShengHsu
許守昇
spellingShingle Shou-ShengHsu
許守昇
Preparation and Mechanical Characterization of Electrospun Composite Membranes
author_sort Shou-ShengHsu
title Preparation and Mechanical Characterization of Electrospun Composite Membranes
title_short Preparation and Mechanical Characterization of Electrospun Composite Membranes
title_full Preparation and Mechanical Characterization of Electrospun Composite Membranes
title_fullStr Preparation and Mechanical Characterization of Electrospun Composite Membranes
title_full_unstemmed Preparation and Mechanical Characterization of Electrospun Composite Membranes
title_sort preparation and mechanical characterization of electrospun composite membranes
publishDate 2013
url http://ndltd.ncl.edu.tw/handle/39453108731371558100
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