electrospinning cellulosic nanofibers for biomedical applications
TRANSCRIPT
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Presentazione risultati acetato di cellulosa
Prova del 17-02-2014
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SoluzioneArticolo di riferimento: Electrospinning cellulosic nanofibers for biomedical applications: structure and in vitro biocompatibility ;
Materials
Acetone (99.9 %, Sigma Aldrich), dimethylacetamide (DMAc, 99.9 %, Sigma Aldrich), and cellulose acetate (CA, Mn = 30,000, 39.8 % acetyl groups, Sigma Aldrich) were employed without additional purification.
Solution
CA (17% w/w) was dissolved acetone/DMAc (2:1 w/w) under constant stirring at room temperature until the solution was transparent (3 h). The solutions were left standing without stirring for a minimum of 10 min to release air bubbles.
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Risultati sperimentali
Portata Tensione Gap
Campione 1 0.04 10 14
Campione 2 0.04 10 18
Campione 3 0.04 10 24
Campione 4 0.06 10 14
Campione 5 0.06 10 18
Campione 6 0.06 10 24
Campione 7 0.1 10 14
Campione 8 0.1 10 18
Campione 9 0.1 10 24
Nota: Per tutti I campioni si è eseguito un tempo di spinnaggio di 5 min
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0.04 0.06 0.1
14
18
24
GAP
10 kV
200 Micron
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Miglior Risultato
Flow Rate = 0.1 mL/h Tensione = 10 kV Gap = 18 cm
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Analisi delle Immagini
Spessore (µm) Deviazione standard
Campione 1 0,360648322 0,105003217
Campione 2 0,554267871 0,139983649
Campione 3 0,404999261 0,122644316
Campione 4 0,452171625 0,1414884
Campione 5 0,328751547 0,079383846
Campione 6 4,4106835 0,768140428
Campione 7 1,109740003 0,226593834
Campione 8 0,422933293 0,092624348
Campione 9 0,691638853 0,154871777
Portata Tensione Gap
Campione 1 0.04 10 14
Campione 2 0.04 10 18
Campione 3 0.04 10 24
Campione 4 0.06 10 14
Campione 5 0.06 10 18
Campione 6 0.06 10 24
Campione 7 0.1 10 14
Campione 8 0.1 10 18
Campione 9 0.1 10 24
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Tabella riassuntiva
10
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Portata 0.04 mL/h
Portata 0.06 mL/h
Portata 0.1 mL/h
Diam
etro
Fib
re (m
icro
n)
Tensione 10 Kv
Gap (cm)
14 cm18 cm
24 cm
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Dipendenza Portata – Diametro fibre (Tensione 10 Kv)
0.060
0.2
0.4
0.6
0.8
1
1.2 Gap 14 cm
Diam
etro
fibr
e (m
icron
)
0,04 0,1 0.060
0.1
0.2
0.3
0.4
0.5
0.6
Gap 18 cm
Diam
etro
fibr
e (m
icron
)
0,04 0,1
0.060
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5Gap 24 cm
Diam
etro
fibr
e (m
icron
)
0,04 0,1
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Effetto della Gap
180
0.2
0.4
0.6
0.8
1
1.2
Portata 0.1 mL/h
Diam
etro
fibr
e (m
icron
)
14 24 180
0.51
1.52
2.53
3.54
4.55
Portata 0.06 mL/h
Diam
etro
fibr
e (m
icron
)
14 24
180
0.1
0.2
0.3
0.4
0.5
0.6
Portata 0.04 mL/h
Diam
etro
Fib
re (M
icron
)
14 24