Page 181 - Biodegradable Polyesters

7.2 Preparation of Polyesters for the Electrospinning Method 159

References [27] [28] [25] [29] [30] [31] [32] [33] [34] [35] [36] [37]

diameter between were 680 ± 210 nm beads No

diameter 550 ± 150 nm centralized beads no and of diameter diameter obtained. were 7.48 ± 2.02 nm

315.9 ± 70.2 nm and with and distributed was diameter Their 400–1000 nm of range average with average 276 ± 65.9 nm diameter 630 ± 40 nm of 1.01 ± 0.44 μm of diameter average Random fibers with average diameter 4.6 ± 1.2 μmand poressizeof171 ± 102 μm 2–3 μm of

Examples of polyester solution systems used in electrospinning for tissue engineering applications.
Morphology and average diameter of fibers beads few surface, smooth with well surface, smooth with formed. were beads many with 200 nm and the in distributed diameter nanofibers oriented randomly with beads, without fibers, 450 ± 150 nm with fibers Homogenous diameters average with nanofibers visualized 2.2 ± 0.6 nm with fibers

Concentration Fibers w/v 12% Fibers 25 wt% Fibers w/v 15% 100 Fiber w/v 30% visualized Uniform 20 wt% Smooth w/w 7% w/w 13% PCL 15 wt% were Random w/v 15% w/v 15% Fibers w/w 15% w/v 25% Random w/v 10% CHCl 3 , chloroform; DCM, dichloromethane; DMF, dimethylformamide; HFIP, 1,1,1,3,3,3-hexafluoro-2-propanol; THF, and tetrah

(1 : 1) (75 : 25) (7 : 3) (7 : 3)
Solvent system HFIP DMF : THF THF : DMF DCM : THF : DMF (3 : 1 : 1) HFIP DCM CHCl 3 :methanol (75 : 25) CHCl 3 : EtOH THF : DMF CHCl 3 HFIP HFIP

75 : 25 (75 : 25) 50 : 50 (85 : 15) Polydioxanone
Table 7.1 Polymer PLGA PLGA PLGA PLGA PDLLA PLLA PCL PCL PCL PCL PCL (PDS)