明胶
静电纺丝
溶剂
二甲基亚砜
纤维
纳米纤维
乙二醇
高分子化学
化学工程
材料科学
形态学(生物学)
扫描电子显微镜
生物高聚物
甲酰胺
溶解
聚合物
化学
纳米技术
复合材料
有机化学
工程类
生物
遗传学
作者
Nuanchan Choktaweesap,Kunawan Arayanarakul,Duangdao Aht‐Ong,Chidchanok Meechaisue,Pitt Supaphol
出处
期刊:Polymer Journal
[Springer Nature]
日期:2007-04-27
卷期号:39 (6): 622-631
被引量:119
标识
DOI:10.1295/polymj.pj2006190
摘要
Gelatin, a naturally-occurring biopolymer, was electrospun in the present contribution. Gelatin solutions were prepared in either single solvent system [i.e., glacial acetic acid (AA)] or mixed solvent systems [i.e., AA/2,2,2-trifluoroethanol (TFE), AA/dimethyl sulfoxide (DMSO), AA/ethylene glycol (EG), and AA/formamide (F)]. The electrospinning was carried out under a fixed electrostatic field strength of 7.5 kV/7.5 cm and the polarity of the emitting electrode was positive. The effects of these solvent systems on morphology and/or size of the electrospun materials were observed by scanning electron microscopy (SEM). Electrospinning of 15–29% w/v gelatin solutions in AA produced beads, beaded fibers, and smooth fibers, depending on the concentration range. Only smooth fibers were observed at the concentration range of 21–29% w/v, with their average diameter ranging between 214 and 839 nm. The addition of TFE as a co-solvent or another modifying liquid of DMSO, EG, or F helped improve the electrospinnability of the resulting gelatin solution. Among the three modifying liquids, DMSO and EG contributed to the formation of smooth gelatin fibers with reduced diameters when compared with those obtained from the solution in pure AA.
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