Process of Incorporation of Cerium Oxide in Viscose to Spin Infrared Reflecting Viscose Fibers

IF 0.6 4区 工程技术 Q4 MATERIALS SCIENCE, TEXTILES
Esha Sharma, R. Agarwal, S. Ralebhat, Gurudatt Krishnamurthy, S. Bhagwat, R. Adivarekar
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引用次数: 0

Abstract

The concept of leveraging the optical properties of cerium oxide into viscose fibers was demonstrated in this study. The process of dispersing cerium oxide particles uniformly into viscose dope prior to viscose fiber spinning was studied in detail. Cerium oxide powder was dispersed in the chosen media using mechanical treatments such as ball milling and ultrasonication. These experiments were carried out at two extreme pH values to replicate the viscose spinning bath (acidic pH 5) and viscose dope (alkaline pH 13). The dispersion was characterized for particle size and surface charge properties. A combination of the mechanical treatments synergistically reduced the cerium oxide particle size in acidic and alkaline pH from 1300 to 290 nm and from 1040 to 280 nm, respectively. Three surfactants of different ionic natures were evaluated for stabilizing the cerium oxide dispersions. The effects on the particle size of cerium oxide in two dispersion environments, that is, aqueous and polymeric media, were studied through conventional as well as novel visual characterization techniques. The phosphate ether-based anionic surfactant was found to significantly reduce the dispersed particle size and effectively stabilize the dispersion better, which was validated through a pressure buildup monitoring system during viscose fiber spinning. The surfactant-stabilized cerium oxide dispersion was used to get functional infrared reflecting viscose fibers. To characterize this effect, a direct visual evaluation was done through an infrared camera which indicated a significant improvement of infrared reflectivity and a 2.5–3°C surface temperature buildup of the cerium-oxide viscose fibers in comparison to regular viscose fibers. The infrared reflective property of cerium oxide imparts a thermal insulation effect which was found to increase to a thermal insulating value of 90 in the case of cerium oxide viscose fibers compared with a thermal insulating value of 79 in regular viscose fibers, as measured by the KESF Thermolabo II instrument. This study can very well be extended to many fiber-making processes where an understanding of interfacial interactions of additives with cellulose is critical to impart functionality to viscose fibers.
在粘胶纤维中掺入氧化铈纺制红外反射粘胶纤维的工艺
本研究证明了利用氧化铈的光学性能制备粘胶纤维的概念。详细研究了在粘胶纤维纺丝前将氧化铈颗粒均匀分散到粘胶原液中的工艺。使用诸如球磨和超声处理的机械处理将氧化铈粉末分散在所选择的介质中。这些实验在两个极端pH值下进行,以复制粘胶纺丝浴(酸性pH 5)和粘胶原液(碱性pH 13)。对分散体的粒度和表面电荷性质进行了表征。机械处理的组合协同地将酸性和碱性pH下的氧化铈颗粒尺寸分别从1300至290nm和从1040至280nm减小。评价了三种不同离子性质的表面活性剂用于稳定氧化铈分散体。通过传统和新颖的视觉表征技术,研究了在两种分散环境(即水介质和聚合物介质)中对氧化铈颗粒尺寸的影响。通过粘胶纤维纺丝过程中的压力累积监测系统验证了磷酸酯基阴离子表面活性剂可以显著减小分散颗粒尺寸,更好地有效稳定分散。采用表面活性剂稳定的氧化铈分散体制备了功能性红外反射粘胶纤维。为了表征这种效果,通过红外相机进行了直接的视觉评估,结果表明,与普通粘胶纤维相比,氧化铈粘胶纤维的红外反射率显著提高,表面温度升高了2.5–3°C。通过KESF Thermolabo II仪器测量,发现在氧化铈粘胶纤维的情况下,氧化铈的红外反射特性赋予隔热效果,与在常规粘胶纤维中的隔热值79相比,该隔热效果增加到90的隔热值。这项研究可以很好地扩展到许多纤维制造工艺中,在这些工艺中,了解添加剂与纤维素的界面相互作用对于赋予粘胶纤维功能至关重要。
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来源期刊
AATCC Journal of Research
AATCC Journal of Research MATERIALS SCIENCE, TEXTILES-
CiteScore
1.30
自引率
0.00%
发文量
34
期刊介绍: AATCC Journal of Research. This textile research journal has a broad scope: from advanced materials, fibers, and textile and polymer chemistry, to color science, apparel design, and sustainability. Now indexed by Science Citation Index Extended (SCIE) and discoverable in the Clarivate Analytics Web of Science Core Collection! The Journal’s impact factor is available in Journal Citation Reports.
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