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Text
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URL Address
<a href="http://doi.org/10.1021/bm200157b" target="_blank" rel="noreferrer noopener">http://doi.org/10.1021/bm200157b</a>
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Pages
1795-1799
Issue
5
Volume
12
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Title
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Highly Hydrophobic Electrospun Fiber Mats From Polyisobutylene-based Thermoplastic Elastomers
Publisher
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Biomacromolecules
Date
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2011
2011-05
Subject
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arborescent; architecture; Biochemistry & Molecular Biology; block-copolymers; Chemistry; coatings; drug-eluting stent; nanofibers; Polymer Science; surfaces
Creator
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Lim G T; Puskas J E; Reneker D H; Jakli A; Horton W E
Description
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This paper is the first report of electrospinning neat polyisobutylene-based thermoplastic elastomers. Two generations of these materials are investigated: a linear poly(styrene-b-isobutylene-b-styrene) (LSIBS) triblock copolymer and a dendritic poly(isobutylene-b-p-methylstyrene) (DIB-MS), also a candidate for biomedical applications. Cross-polarized optical microscopy shows birefringence, indicating orientation in the electrospun fibers, which undergo large elongation and shear during electrospinning. In contrast to the circular cross section of LSIBS fibers, DIB-MS yields dumbbell-shaped fiber cross sections for the combination of processing conditions, molecular weight, and architecture. Hydrophobic surfaces with a water contact angle as high as 146 +/- 30 degrees were obtained with DIB-MS that had the noncircular fiber cross section and a hierarchical arrangement of nano- to micrometer-sized fibers in the mat. These highly water repellent fiber mats were found to serve as an excellent scaffold for bovine chondrocytes to produce cartilage tissue.
Identifier
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<a href="http://doi.org/10.1021/bm200157b" target="_blank" rel="noreferrer noopener">10.1021/bm200157b</a>
Format
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Journal Article or Conference Abstract Publication
2011
arborescent
architecture
Biochemistry & Molecular Biology
Biomacromolecules
block-copolymers
Chemistry
coatings
drug-eluting stent
Horton W E
Jakli A
Journal Article or Conference Abstract Publication
Lim G T
nanofibers
Polymer Science
Puskas J E
Reneker D H
surfaces