Electrospun Aligned Poly(L-lactide)/Poly(ϵ-caprolactone) /Poly(ethylene glycol) Blend Fibrous Membranes

Abstract

Aligned poly(L-lactide) (PLLA)/poly(ε-caprolactone) (PCL)/poly(ethylene glycol)(PEG) fibrous membranes were fabricated by electrospinning. Their morphology, thermal stability, mechanical properties, hydrophilic properties and in vitro degradation behaviors were investigated. With increasing the content of PEG, the PLLA/PCL/PEG blend fibers become thinner due to the increment in solution conductivity and decrease in solution viscosity. The thermal stability, hydrophilic properties, the tensile strength and elongation-at-break of PLLA/PCL/PEG blend fibrous membranes were improved, but porosity were decreased with the content of PEG changing from 10 wt% to 30 wt%. Furthermore, the incorporation of PEG enhanced the degradation of the PLLA/PCL/PEG fibrous membranes due to the better hydrophilic properties. In addition, the PLLA/PCL/PEG fibrous membranes have no toxic effect on proliferation of adipose-derived stem cells.

Preparation and properties of novel epoxy composites containing electrospun PA6/F‐MWNTs fibers

“…The conductivity of the blend solution with 0.5 wt% F‐MWNTs is 2.40 × 10 −3 S/m, and increased to 2.80 × 10 −3 S/m and 2.98 × 10 −3 S/m for the composite solution with 1 and 1.5 wt% F‐MWNTs, respectively. During electrospinning, an increase in the composite solution conductivity causes a larger electric current, which induces a higher electrical force, hence resulting in thinner fibers . From Fig.…”

A High Efficiency PDMS-Based Stabilizer for Dispersion Polymerization of L-lactide in Supercritical Carbon Dioxide

“…The dispersion polymerization of linear aliphatic polyesters such as poly(Llactide) (PLLA), poly(ε-caprolactone) (PCL), poly(lactideco-glycolide) (PLGA) and polyglycolide (PGA) in ScCO 2 has attracted much attention in recent years. All these biodegradable polymers are widely used in biomedical applications such as carriers for sustained release of drugs (3)(4), absorbable sutures and scaffolds for tissue engineering (5)(6). Hile and Pishko first reported the synthesis of PLGA in ScCO 2 (7), later they also described an emulsionlike polymerization using poly (perfluorooctyl acrylate) as the stabilizer (8).…”