PRIMARY STUDY OF ETHYL CELLULOSE NANOFIBER FOR
OXYGEN-ENRICHMENT MEMBRANE
by
Jing SHEN a, Fei-Yan Wang b, and Ji-Huan HE a*
a Na tional En gi neer ing Lab o ra tory for Mod ern Silk, Col lege of Tex tile and Cloth ing En gi neer ing,
Soochow Uni ver sity, China
b Xinglin Col lege, Nantong Uni ver sity, Nantong, China
Short pa per DOI: 10.2298/TSCI1603008S
Ethyl cel lu lose is widely used for ox y gen-en rich ment mem brane, how ever, its nanofiber mem brane was rarely de vel oped though it be haves more ex cel lent per -for mance. This pa per gives a pre lim i nary study to pro duce ox y gen-en rich ment mem brane by bubbfil spin ning.
Key words: ox y gen-en rich ment, bub ble electrospinning, nanofiber mem brane, di am e ter
In tro duc tion
Ethyl cel lu lose (EC) has been widely re garded as a kind of wa ter-in sol u ble ma te ri als with better mem braneform ing abil ity, sus tain able drug re lease, and gassep a ra tion per for -mance. The EC has the en hanced diffusivity se lec tiv ity for gas pairs of ox y gen/ni tro gen [1], and blend mem branes of liq uid crys tal com pound with EC have been widely used as the ox y genen -rich ment mem branes, which are usu ally pre pared by a so lu tion cast ing tech nique [2]. Re cent study re veals that the ox y gen flux in creases as the thick ness of thin dense layer de creases [3]. Nanotechnology makes it pos si ble to make the mem brane ex tremely thin [4, 5]. The EC nanofiber mem brane for ox y genen rich ment is a prom is ing new field in en ergy, ma te ri als sci -ence, and nanotechnology as well.
Nanofiber mem branes pos sess fan tas tic phys i cal prop er ties, such as high sur face re ac tiv ity [6] and ex cel lent air per me abil ity [7], and the bubbfil spin ning is a per fect method to pro -duce nanofiber [8-10].
Ex per i ment
In this pa per, EC par ti cles are dis solved into al co hol/DMAc (9:1) at 25 °C. Other spin -ning con di tions in bubbfil spin -ning pro cess are used to ad just to con trol the fi ber di am e ter. We ad just the col lec tor dis tance from 5 cm to 30 cm with the fixed 20% con cen tra tion of so lu -tion and 25 kV ap plied volt age. The ex per i ment is re peated for the con cen tra -tion of 27% and 30%, respectively.
We ob serve that the fi ber di am e ter in creases when con cen tra tion of so lu tion in creases, this is be cause the thick ness of bub ble wall be comes larger for higher con cen tra tion of so lu tion. Fur ther more, we ob tain the re la tion ship be tween the di am e ter dis tri bu tion and col lec tor dis tance un der dif fer ent con cen tra tions of so lu tion, figs. 1(a)-(c).
Shen, J., et al.: Primary Study of Ethyl Cellulose Nanofiber for Oxygen-Enrichment ...
1008 THERMAL SCIENCE: Year 2016, Vol. 20, No. 3, pp. 1008-1009
Re sults and con clu sion
Fig ure 1(a) shows that the num ber of fi bers with di am e ter of 100 nm de creases with in -crease of the col lec tor dis tance, while num ber of larger fi ber with di am e ter of 200 nm in -creases. Fig ure 1(a) shows an EC nanofiber mem brane with fi ber di am e ter of 100 nm and 200 nm can be pre pared, re spec tively, when the col lec tor dis tance is 5 cm and 30 cm, tab. 1. We can ob tain nanofiber mem branes with fi ber di am e ter vary ing from 100600 nm by ad -just ing spin ning con di tions.
Ac knowl edge ment
The work is sup ported by Pri or ity Ac a demic Pro gram De vel op ment of Jiangsu Higher Ed u ca tion In sti tu tions (PAPD), Na tional Nat u ral Sci ence Foun da tion of China un der Grant No.11372205 and Pro ject for Six Kinds of Top Tal ents in Jiangsu Prov ince un der Grant No. ZBZZ-035, Sci ence & Tech nol ogy Pil lar Pro gram of Jiangsu Prov ince un der Grant No. BE2013072, Nantong Sci ence and Tech nol ogy pro ject (GY12015022)
Ref er ences
[1] Li, X. G., et al., Ef fect of Tem per a ture and Pres sure on Gas Trans port in Ethyl Cel lu lose Mem brane, Poly -mer, 42 (2001), 16, pp. 6801-6810
[2] Huang, M. R., et al., Air Sep a ra tion Prop er ties and Sta bil i ties of Blend Mem branes of Liq uid Crys tals with Ethyl Cel lu lose, Sep a ra tion Sci ence and Tech nol ogy, 30 (1995), 3, pp. 449-460
[3] Jiang, Q., et al., Ox y gen Per me ation Study and Im prove ment of Ba0.5Sr0.5Co0.8Fe0.2Ox Perovskite Ce ramic Mem branes, Jour nal of Mem brane Sci ence, 369 (2011), 1, pp. 174-181
[4] Liu, Z., et al., Tun able Sur face Mor phol ogy of Electrospun PMMA Fi ber Us ing Bi nary Sol vent, Ap plied Sur face Sci ence, 364 (2016), Feb., pp. 516-521
[5] Liu, Z., et al., Ac tive Gen er a tion of Mul ti ple Jets for Pro duc ing Nanofibres with High Qual ity and High Through put, Ma te ri als & De sign, 94 (2016), Mar., pp. 496-501
[6] McClure, C. D., et al., Large Ef fect of Ti ta nium Pre cur sor on Sur face Re ac tiv ity and Me chan i cal Strength of Electrospun Nanofibers Coated with TiO2 by Atomic Layer De po si tion, Jour nal of Vac uum Sci ence & Tech nol ogy A, 6 (2013), 31, p. 061506
[7] Shen, J., et al., Bio-Mimic De sign of PM2. 5 Anti-Smog Masks, Ther mal Sci ence, 18 (2014), 5, pp. 1689-1690 [8] Li, Y., et al., Cop per/PA66 Nanofibers by Bubbfil-Spin ning, Ther mal Sci ence, 19 (2015), 4, pp. 1463-1465 [9] He, C. H., et al., Bubbfil Spin ning for Fab ri ca tion of PVA Nanofibers, Ther mal Sci ence, 19 (2015), 2, pp. 743-746 [10] Chen, R., et al., Bub ble Rup ture in Bub ble Electrospinning, Ther mal Sci ence, 19 (2015), 4, pp.1141-1149
Pa per sub mit ted: Jan u ary 10, 2016 Pa per re vised: Jan u ary 30, 2016 Pa per ac cepted: Feb ru ary 12, 2016
Shen, J., et al.: Primary Study of Ethyl Cellulose Nanofiber for Oxygen-Enrichment ...
THERMAL SCIENCE: Year 2016, Vol. 20, No. 3, pp. 1008-1009 1009
Figure 1. The re la tion ship be tween the di am e ter dis tri bu tion and col lec tor dis tance
Ta ble 1. Spin ning con di tions for EC nanofiber
mem branes
Di am e ter of nanofiber
Con cen tra tion of so lu tion
Ap plied volt age
Col lec tor dis tance
100 nm 20% 25 kV 5 cm
200 nm 20% 25 kV 30 cm
300 nm 27% 25 kV 7.5 cm
400 nm 27% 25 kV 30 cm
500 nm 30% 25 kV 7.5 cm
