气隙纺丝法制备聚乙烯醇缩丁醛-氧化锆杂化中空纤维,Journal of Applied Polymer Science

当前位置： X-MOL 学术 › J. Appl. Polym. Sci. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

气隙纺丝法制备聚乙烯醇缩丁醛-氧化锆杂化中空纤维
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-10-27 , DOI: 10.1002/app.50164
Anamul Hoque Bhuiyan _{1,

2} , Takuma Nagakawa ₁ , Koji Nakane ₁

Affiliation

在这项研究中，采用气隙纺丝方法开发了聚乙烯醇缩丁醛（PVB）-锆（Zr）杂化中空纤维。与烷氧基锆一起使用了三种缩醛化程度不同的PVB作为有机聚合物。通过改变混凝溶液浓度，纺丝原液粘度和气隙距离来表征中空纤维内部的形貌，表面Zr含量和相对键合。用X射线光电子能谱，扫描电子显微镜，热重分析和傅里叶变换红外光谱研究了Zr对PVB结构的影响。结果表明，PVB纺丝溶液在室温下具有良好的混合机理，并且在以2.0 cm气隙距离挤出到Zr醇盐的凝结液中时会立即形成结构空心纤维。在其他制备的纤维中，包含20 wt％PVB和2 cm气隙的纤维证实有效平均直径约为1016μm，这受到纺丝溶液粘度的强烈影响。最大Zr含量（8.18％–14.36％）的变化证实了内外表面上发生的配位键不对称。而且，纺丝溶液粘度，凝结液浓度和气隙的变化仅影响表面粗糙度和纤维直径，而在纤维亚层中没有形成微孔。

"点击查看英文标题和摘要"

Polyvinyl butyral‐zirconia hybrid hollow fibers prepared by air gap spinning

In this study, an air gap spinning method was adopted to develop polyvinyl butyral (PVB)‐zirconium (Zr) hybrid hollow fibers. With zirconium alkoxide, three kinds of PVB with different degree of acetalization were used as organic polymers. The morphologies, surface Zr content and relative bonding inside the hollow fibers were characterized by changing coagulation solution concentration, spinning dope viscosity and air gap distance. The effect of Zr on PVB structure were examined in terms of x‐ray photoelectron spectroscopy, scanning electron microscopy, thermogravimetric analysis and Fourier transform infrared spectroscopy. Results indicate that PVB spinning solution experienced good mixing mechanism at room temperature and immediately develop structural hollow fiber when extruded into coagulation fluid of Zr alkoxide by 2.0 cm air gap distance. Among other prepared fibers, fiber contained 20 wt% PVB with 2 cm air gap confirms effective average diameter of about 1016 μm which strongly influenced by spinning solution viscosity. The variation of maximum Zr content (8.18%–14.36%) confirms the asymmetry of coordinate bonding occurred on internal and external surface. Moreover, changing of spinning solution viscosity, coagulation liquid concentration and air gap can only affect the surface roughness and fiber diameter whereas no micro pores were developed in the fiber sublayers.

更新日期：2021-01-02

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南