NDLI: Electrospun in-situ hybrid polyurethane/nano-TiO$

Content Provider	Springer Nature Link
Author	Yan, Lidan Si, Shaoxiong Chen, Yi Yuan, Tun Fan, Haojun Yao, Yongyi Zhang, Qiyi
Copyright Year	2011
Abstract	By combining the organic-inorganic hybridization, wet phase inversion, and electrospinning, novel electrospun polyurethane (PU) membranes with in-situ generated nano-TiO$_{2}$ were prepared, which satisfied the requirements of an ideal wound dressing. The morphology of the PU-TiO$_{2}$ mats and the cross sectional morphologies of the membranes were characterized by a scanning electron microscopy (SEM). The average diameter of the individual fibers obtained from the solutions was 341±12 nm. SEM micrographs with higher magnification further showed that the in-situ generated TiO$_{2}$ particles were well-separated and dispersed homogeneously in the membranes. The average sizes of TiO$_{2}$ particles were increased from 31 to 57 nm, with the increase of nano-TiO$_{2}$ concentration. The water vapor transmission rates (WVTRs) of the membranes were in the range of 373.55–3121.86 g/m$^{2}$·d and decreased gradually with the increase of nano-TiO$_{2}$ concentration. The water absorption of various PU membranes was in the range of 210.90–397.98 % which was enough to prevent wound beds from exudate accumulation. Shake flask testing indicated that the PU membrane exhibited antibacterial efficiency against Pseudomonas aeruginosa (Ps. aeruginosa) and Staphylococcus aureus (S. aureus) due to in-situ generated of nano-TiO$_{2}$. These electrospun nanofibrous membranes also had no toxic effect and showed good and immediate adherence to L929 cells.
Starting Page	207
Ending Page	213
Page Count	7
File Format	PDF
ISSN	12299197
Journal	Fibers and Polymers
Volume Number	12
Issue Number	2
e-ISSN	18750052
Language	English
Publisher	The Korean Fiber Society
Publisher Date	2011-04-07
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electrospinning In-situ generated Nano-TiO$_{2}$ Wet phase inversion Wound dressing Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering Polymers and Plastics

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