Highly Hydrophobic Electrospun Fiber Mats From Polyisobutylene-based Thermoplastic Elastomers

Title

Highly Hydrophobic Electrospun Fiber Mats From Polyisobutylene-based Thermoplastic Elastomers

Creator

Lim G T; Puskas J E; Reneker D H; Jakli A; Horton W E

Publisher

Biomacromolecules

Date

2011
2011-05

Description

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.

Subject

arborescent; architecture; Biochemistry & Molecular Biology; block-copolymers; Chemistry; coatings; drug-eluting stent; nanofibers; Polymer Science; surfaces

Identifier

Format

Journal Article or Conference Abstract Publication

Search for Full-text

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Rights

Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).

Pages

1795-1799

Issue

5

Volume

12

Citation

Lim G T; Puskas J E; Reneker D H; Jakli A; Horton W E, “Highly Hydrophobic Electrospun Fiber Mats From Polyisobutylene-based Thermoplastic Elastomers,” NEOMED Bibliography Database, accessed April 17, 2021, https://neomed.omeka.net/items/show/10761.

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