Degradable cellulose acetate-based waterborne polyurethane sand-fixing agents for sand control in desert regions

IF 5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Polymer Testing Pub Date : 2024-07-09 DOI:10.1016/j.polymertesting.2024.108512

Wanjia Yang , Benli Liu

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Abstract

In hot and arid desert regions, degradable chemical sand-fixing agents are efficient in dealing with problems caused by wind-blown sand movement without damaging the environment. This study aimed to develop a set of biodegradable sand-stabilizing substances, cellulose acetate (CA)-based waterborne polyurethane (WPU), utilizing CA as a partial hydroxyl provision through an acetone-based technique. The findings demonstrate that all the CA/WPU sand-fixing agents had unique, evenly spherical particles and were fully capable of degradation. The CA/WPU-2 sand-fixing agent contained 20 % polypropylene glycol (PPG) of CA. It showed strong viscosity, thermal stability, and water resistance. Furthermore, seed germination will be hindered by the CA/WPU-2 sand-fixing agent due to its superior sand-fixing capability compared to pure WPU. Consequently, it is suitable for application in arid regions where plant survival is difficult. CA/WPU-6 contained 120%PPG of CA. it showed outstanding O₂ permeability and hydrophilicity due to its significant use of cellulose acetate. In addition, it demonstrated higher wind-blown sand resistance compared to popular commercial sand-fixation production. Furthermore, it sustained a consolidation strength lower than the highest penetration capability for herbaceous plant seeds. Therefore, CA/WPU-6 is a suitable option for establishing vegetation in dry situations. The results of this study address the demand for sustainable production and cost reduction, offering significant potential for industrial applications.

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用于沙漠地区防沙的可降解醋酸纤维素水性聚氨酯固沙剂

在炎热干旱的沙漠地区，可降解的化学固沙剂可以有效地解决风沙流动带来的问题，同时不会对环境造成破坏。本研究旨在开发一套可生物降解的固沙物质，即醋酸纤维素（CA）为基础的水性聚氨酯（WPU），通过丙酮技术利用 CA 作为部分羟基供应。研究结果表明，所有 CA/WPU 固砂剂都具有独特、均匀的球形颗粒，并且完全能够降解。CA/WPU-2 固砂剂含有 20% 的 CA 聚丙二醇（PPG）。它具有很强的粘度、热稳定性和耐水性。此外，与纯 WPU 相比，CA/WPU-2 固沙剂的固沙能力更强，因此会阻碍种子发芽。因此，它适用于植物难以存活的干旱地区。CA/WPU-6 含有 120%PPG 的 CA。由于大量使用醋酸纤维素，它具有出色的氧气渗透性和亲水性。此外，与流行的商业固沙生产相比，它还具有更高的抗风吹砂性能。此外，它的固结强度低于草本植物种子的最高穿透能力。因此，CA/WPU-6 是在干燥环境中建立植被的合适选择。这项研究的结果满足了可持续生产和降低成本的需求，为工业应用提供了巨大潜力。

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来源期刊

Polymer Testing 工程技术-材料科学：表征与测试

CiteScore

10.70

自引率

5.90%

发文量

328

审稿时长

44 days

期刊介绍： Polymer Testing focuses on the testing, analysis and characterization of polymer materials, including both synthetic and natural or biobased polymers. Novel testing methods and the testing of novel polymeric materials in bulk, solution and dispersion is covered. In addition, we welcome the submission of the testing of polymeric materials for a wide range of applications and industrial products as well as nanoscale characterization. The scope includes but is not limited to the following main topics: Novel testing methods and Chemical analysis • mechanical, thermal, electrical, chemical, imaging, spectroscopy, scattering and rheology Physical properties and behaviour of novel polymer systems • nanoscale properties, morphology, transport properties Degradation and recycling of polymeric materials when combined with novel testing or characterization methods • degradation, biodegradation, ageing and fire retardancy Modelling and Simulation work will be only considered when it is linked to new or previously published experimental results.