Characterization and properties of electrospun thermoplastic polyurethane blend fibers: Effect of solution rheological properties on fiber formation

Hao-Yang Mi; Xin Jing; Brianna R. Jacques; Lih-Sheng Turng; Xiang-Fang Peng

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Characterization and properties of electrospun thermoplastic polyurethane blend fibers: Effect of solution rheological properties on fiber formation

机译：电纺热塑性聚氨酯共混物纤维的特性和性质：溶液流变性质对纤维形成的影响

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摘要

Porous thermoplastic polyurethane (TPU) membranes were produced by the electrospinning process. Two different TPUs and their blends were used to investigate the effects of material composition, solution concentration, and rheological properties on the microstructure, fiber diameter, and fiber diameter distribution of the electrospun membranes. The ratios of hard and soft segments in the solutions were adjusted by varying the blend ratios of TPUs dissolved in N, N-dimethylformamide. The solutions with higher TPU concentrations and more hard segments exhibited a higher viscosity, larger storage and loss moduli, and greater electrospun jet stability. Solutions with concentrations around the critical chain entanglement concentration (C_e) produced bead or beaded fiber structures, while bead-free fibers of a uniform diameter were obtained when the concentration increased to about two times that of C_e. Relationships between the electrospun fiber diameter, the Berry number, and the normalized concentration of the solutions were studied as well.

机译：通过静电纺丝工艺生产了多孔热塑性聚氨酯（TPU）膜。使用两种不同的TPU及其共混物来研究材料组成，溶液浓度和流变性质对电纺膜的微观结构，纤维直径和纤维直径分布的影响。通过改变溶解在N，N-二甲基甲酰胺中的TPU的混合比例来调节溶液中硬链段和软链段的比例。具有较高TPU浓度和更多硬链段的溶液显示出更高的粘度，更大的储能和损耗模量以及更高的电纺射流稳定性。当浓度增加到C_e的两倍左右时，浓度达到临界链缠结浓度（C_e）左右的溶液就会产生珠或珠的纤维结构，而获得直径均匀的无珠纤维。还研究了电纺纤维直径，贝里数和溶液的标准化浓度之间的关系。

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来源
《Journal of Materials Research》 |2013年第17期|2339-2350|共12页
作者
Hao-Yang Mi; Xin Jing; Brianna R. Jacques; Lih-Sheng Turng; Xiang-Fang Peng;
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作者单位

Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706 and National Engineering Research Center of Novel Equipment for Polymer Processing,South China University of Technology, Guangzhou, 510640, China;

Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706 and National Engineering Research Center of Novel Equipment for Polymer Processing,South China University of Technology, Guangzhou, 510640, China;

Department of Biology, University of Wisconsin-River Falls, Wisconsin 54022;

Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706;

National Engineering Research Center of Novel Equipment for Polymer Processing,South China University of Technology, Guangzhou, 510640, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
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Characterization and properties of electrospun thermoplastic polyurethane blend fibers: Effect of solution rheological properties on fiber formation

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