疏水矿化棉纤维的制备及其油水分离性能

袁雪; 龙曼成; 宋飞; 汪秀丽; 王玉忠

doi:10.11777/j.issn1000-3304.2017.17140

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疏水矿化棉纤维的制备及其油水分离性能

研究论文 | 更新时间：2021-01-26

- 疏水矿化棉纤维的制备及其油水分离性能
- Biomineralized Cotton/CaCO₃ Composite for Selective Oil Absorption
- 高分子学报 2018年第4期页码：524-531
- 作者机构：
  
  四川大学化学学院环保型高分子材料国家地方联合工程实验室环境友好高分子材料教育部工程研究中心成都 610064
- 作者简介：
  
  汪秀丽, E-mail: xiuliwang1@163.com Xiu-li Wang, E-mail: xiuliwang1@163.com
- 基金信息：
  
  国家自然科学基金(51773134);四川省青年科技创新研究团队计划(2017TD0006)
- DOI：10.11777/j.issn1000-3304.2017.17140
  中图分类号：
- 纸质出版日期：2018-4-20，
  
  收稿日期：2017-5-24，
  
  修回日期：2017-7-9，
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袁雪, 龙曼成, 宋飞, 汪秀丽, 王玉忠. 疏水矿化棉纤维的制备及其油水分离性能[J]. 高分子学报, 2018,(4):524-531.

Xue Yuan, Man-cheng Long, Fei Song, Xiu-li Wang, Yu-zhong Wang. Biomineralized Cotton/CaCO₃ Composite for Selective Oil Absorption[J]. Acta Polymerica Sinica, 2018,(4):524-531.
袁雪, 龙曼成, 宋飞, 汪秀丽, 王玉忠. 疏水矿化棉纤维的制备及其油水分离性能[J]. 高分子学报, 2018,(4):524-531. DOI： 10.11777/j.issn1000-3304.2017.17140.

Xue Yuan, Man-cheng Long, Fei Song, Xiu-li Wang, Yu-zhong Wang. Biomineralized Cotton/CaCO₃ Composite for Selective Oil Absorption[J]. Acta Polymerica Sinica, 2018,(4):524-531. DOI： 10.11777/j.issn1000-3304.2017.17140.

摘要

通过交替浸渍法（ASP）在天然棉纤维表面进行仿生矿化均匀地制备了碳酸钙涂层，并使用硬脂酸钠进一步对棉纤维/碳酸钙复合物进行表面疏水改性，得到了具有良好疏水性能的棉纤维材料.FTIR结果显示，碳酸钙与棉纤维之间以氢键结合.改性后的疏水棉纤维具有优异的吸附选择性，能够实现油水分离.改性棉纤维对多种油类均具有良好的吸附能力，对二甲基硅油和氯仿循环吸附30次后，吸附保持率仍可达到80%以上，表现出良好的重复使用性能.该疏水矿化棉纤维具有环境友好，成本低廉，制备方法简单等优势，在油水污染物处理方面具有潜在应用价值.

Abstract

To fabricate oil/water separating material with good selective absorption capacity

natural materials including cotton and calcium carbonate (CaCO

)were selected. Cotton fibers/CaCO

composites were prepared by a biomimetic mineralization approach

through which CaCO

particles were uniformly coated on the surface of cotton fibers by an alternative soaking process (ASP). Polyacrylic acid (PAA) was first introduced onto the surface of the cotton before CaCO

mineralization to avoid the agglomeration of the formed inorganic particles. The prepared cotton fibers/CaCO

composites were further modified by sodium stearate

which is a cost-efficient hydrophobic agent commonly used to modify CaCO

. By this way

the water contact angle of the composites increased to 145°

as compared with the water contact angle (0°) of the pristine cotton

illustrating that the surface wettability of the cotton fibers was changed successfully from hydrophilic to hydrophobic. FTIR results demonstrated that the hydrogen bonds existed between CaCO

and cotton fibers

which provided the binding force for the composites. A series of samples with different concentrations of CaCO

were prepared

and the relationship between the wetting behavior and the concentration of modified CaCO

were investigatged and discussed in detail. In addition

the selective absorbing capability against oil/water mixture was measured for the composite. The resultant hydrophobic cotton fibers showed good selective absorption to different oils

including vegetable oil

crude oil

paraffin oil

simethicone and chloroform

from the oil/water mixtures. The absorption capacity achieved was as high as (17.4 ±1.16)

(23.6 ±1.9)

(20.5 ±1.5)

(22.7 ±1.2) and (27.3 ±1.0) g/g for different oils. In particular

the adsorption rates of simethicone and chloroform were maintained higher than 80% even after 30 cycles of readsorptions

indicating the good reusability of the composite fibers. All these results demonstrated that the novel hydrophobic cotton fiber/calcium carbonate composites had potential applications in the treatment of oil-water pollutants.

关键词

棉纤维仿生矿化碳酸钙硬脂酸钠吸油油水分离

Keywords

Cotton fiberBiomimetic mineralizationCalcium carbonateSodium StearateOil absorptionOil/water separation

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