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Properties of Electrospun Nanofibers of Multi-Block Copolymers of [Poly-ε-caprolactone-b-poly(tetrahydrofuran-co-ε-caprolactone)]

Properties of Electrospun Nanofibers of Multi-Block Copolymers of [Poly-ε-caprolactone-b-poly(tetrahydrofuran-co-ε-caprolactone)]

Muhammad Ijaz Shah, Zhening Yang, Yao Li, Liming Jiang, Jun Ling

Polymers (Basel). 2017 Oct 27;9(11):559.

PMID: 30965863

Abstract:

Novel biodegradable multiblock copolymers of [PCL-b-P(THF-co-CL)]m with PCL fractions of 53.3 and 88.4 wt % were prepared by Janus polymerization of ε-caprolactone (CL) and tetrahydrofuran (THF). Their electrospun mats were obtained with optimized parameters containing bead-free nanofibers whose diameters were between 290 and 520 nm. The mechanical properties of the nanofiber scaffolds were measured showing the tensile strength and strain at break of 8⁻10 MPa and 123⁻161%, respectively. Annealing improved their mechanical properties and their tensile strength and strain at break of the samples increased to 10⁻13 MPa and 267⁻338%, respectively. Due to the porous structure and crystallization in nanoscale confinement, the mechanical properties of the nanofiber scaffolds appeared as plastics, rather than as the elastomers observed in bulk thermal-molded film.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP25190061	Poly(tetrahydrofuran)		25190-06-1	Price

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