Release of the Diclofenac Sodium by Nanofibers of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Obtained from Electrospinning and Solution Blow Spinning

Table 2

Thermal properties of PHBV nanofibers produced by electrospinning (ES) and solution blow spinning (SBS).

Samples	Techniques	𝑇𝑚 (°C)	Δ𝐻𝑚 (J/g)	𝑇𝑐 (°C)	Δ𝐻𝑐 (J/g)	𝑋𝑐 (%)
Neat PHBV	ES	164.3±3.5	44.3±26.4	—	—	—
	SBS	168.5±1.2	11.8±1.5	—	—	—
PHBV + 5% Diclof.	ES	147.5±5.2/132.3±2.8	55.7±5/7.8±4.8	37.5±2.1	10±5.6	38.8±9.5
	SBS	135±7/134.7±11.4	63.6±2.4/3.4±0.01	48.1±3	36.1±4.5	26±8.1
PHBV + 10% Diclof.	ES	136.6±0.7/137.1±1.2	61.7±6.3/2.7±0.5	40.1	26.5	28.1
	SBS	142.4±3.4/125.6±2.3	63.6±2.4/3.4±0.01	46.6±1.4	35.8±4.7	25.5±2.1
PHBV + 20% Diclof.	ES	138±1.8/126.6±2	46±1.3/4.3±0.2	—	—	—
	SBS	141.1±2/129±3.3	56.1±17/6.1±2	—	—	—

𝑇_𝑚: melting temperature; Δ𝐻_𝑚: fusion enthalpy; 𝑇_𝑐: crystallization temperature; Δ𝐻_𝑐: crystallization enthalpy; 𝑋_𝑐: crystallization degree.