纤维素/几丁质/淀粉纳米颗粒稳定的pdms -水乳液制备油吸附剂的比较研究。

IF 12.5 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers Pub Date : 2025-01-05 DOI:10.1016/j.carbpol.2025.123229

Haojie Ma , Zheng Yang , Dingfeng Xu , Haozhen Ding , Hui Liu , Yao Huang

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引用次数: 0

摘要

皮克林乳液模板在多孔复合材料的制备中引起了广泛的关注。本文比较研究了纤维素纳米纤维/纳米晶体（CNF/CNC）、几丁质纳米纤维/纳米晶体（ChNF/ChNC）和蜡质/普通玉米纳米晶体（WSNC/CSNC）等6种纳米颗粒在Pickering乳液模板法制备PDMS多孔复合材料中的性能。其中，CNF和ChNF的乳状液稳定能力最好，而ChNF和ChNC在最佳浓度下可形成高内相乳状液，长期稳定性达300天以上。稳定乳液能力最差的WSNC和CSNC均无法形成多孔复合材料，而其他4种颗粒均与PDMS形成多孔复合材料。ChNF和ChNC复合材料的疏水性最高，其次是CNC复合材料。作为柴油吸附剂，ChNF复合材料表现出最高的吸附能力和吸附选择性，并且可以通过简单的机械挤压回收。在优化的PDMS组分下，ChNF复合材料在高通量8862 L/h·m2下可实现真空连续油水分离，分离效率高达98.9%。本研究揭示了由皮克林乳液模板制备的纳米颗粒及其复合材料之间的联系，有望拓宽天然聚合物在水处理及相关领域的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

PDMS-in-water emulsions stabilized by cellulose/chitin/starch nanoparticles for fabrication of oil adsorbents: A comparison study

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PDMS-in-water emulsions stabilized by cellulose/chitin/starch nanoparticles for fabrication of oil adsorbents: A comparison study

Pickering emulsion template has aroused attention in the fabrication of porous composite materials. In this work, six nanoparticles including cellulose nanofiber/nanocrystal (CNF/CNC), chitin nanofiber/nanocrystals (ChNF/ChNC) and waxy/normal corn nanocrystal (WSNC/CSNC) were comparatively studied for their performance in fabricating porous composites with PDMS via Pickering emulsion templates. Among all, CNF and ChNF exhibited best emulsion stabilizing ability, while ChNF and ChNC at optimized concentrations enabled the formation of high internal phase emulsions with long-term stability of over 300 days. WSNC and CSNC with poorest emulsion stabilizing ability failed to obtain porous composites while the other four particles all formed porous composites with PDMS. The ChNF and ChNC composites displayed highest hydrophobicity, followed by the CNC composite. As adsorbents for diesel oil, the ChNF composite showed the highest adsorption capacity and adsorption selectivity, which could be easily recycled by simple mechanical squeezing. At optimized PDMS fractions, the ChNF composite could achieve continuous oil-water separation under vacuum with a highest separation efficiency of 98.9 % at high flux of 8862 L/h·m². This study revealed the association between nanoparticles and their composite materials fabricated from Pickering emulsion template, hopefully broadening the application of natural polymers in water treatment and related fields.

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来源期刊

Carbohydrate Polymers 化学-高分子科学

CiteScore

22.40

自引率

8.00%

发文量

1286

审稿时长

47 days

期刊介绍： Carbohydrate Polymers stands as a prominent journal in the glycoscience field, dedicated to exploring and harnessing the potential of polysaccharides with applications spanning bioenergy, bioplastics, biomaterials, biorefining, chemistry, drug delivery, food, health, nanotechnology, packaging, paper, pharmaceuticals, medicine, oil recovery, textiles, tissue engineering, wood, and various aspects of glycoscience. The journal emphasizes the central role of well-characterized carbohydrate polymers, highlighting their significance as the primary focus rather than a peripheral topic. Each paper must prominently feature at least one named carbohydrate polymer, evident in both citation and title, with a commitment to innovative research that advances scientific knowledge.