Facile fabrication of totally waterborne superhydrophobic sponge for versatile and efficient oil/water separation

IF 5.1 3区工程技术 Q1 CHEMISTRY, APPLIED Reactive & Functional Polymers Pub Date : 2025-01-10 DOI:10.1016/j.reactfunctpolym.2025.106154

Meng Li , Qian Huang , Jingjing Liu , Xumiao Jia , Ying Lei , Weixing Chen

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Abstract

Superhydrophobic polymer sponges have attracted tremendous attention as prospective sorbent materials for oily wastewater treatment depend on their unique highly selective oil/water separation. Nevertheless, it is still challenging to fabricate the superhydrophobic sponges in a totally waterborne manner. In the current work, we presented a facile, cost-effective, scalable, and totally waterborne method to prepare superhydrophobic melamine sponges (SMS) via modification of melamine sponge (MS) with polydimethylsiloxane (PDMS) emulsion. Benefiting from the surface roughness increased and surface energy lowered simultaneously after PDMS molecules grafted onto the surface of MS, the SMS exhibited superhydrophobicity (contact angle (CA) > 155^o). Impressively, the as-prepared SMS displayed superior oil/organic solvent sorption capacity, recyclability, and stability in harsh chemical/physical conditions (e.g., strongly acidic/alkaline solution, high/low-temperature environment). The SMS was utilized as an essential core component of the continuous oil pollutant removal device to realize highly efficient oil/water separation. Moreover, the SMS was successfully demonstrated for separating both immiscible oil/water mixture and surfactant-stabilized water-in-oil emulsions. Therefore, this facile, eco-friendly, and cost-effective synthesis strategy can be easily integrated into industrial and exhibit great potential for environmental remediation.

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易于制造的全水性超疏水海绵，用于多功能和高效的油/水分离

超疏水聚合物海绵由于其独特的高选择性油水分离特性，作为一种有前景的含油废水处理吸附材料受到了广泛的关注。然而，制备完全水性的超疏水海绵仍是一项挑战。在本研究中，我们提出了一种简单、经济、可扩展、全水性的方法，通过聚二甲基硅氧烷（PDMS）乳液改性三聚氰胺海绵（MS）来制备超疏水三聚氰胺海绵（SMS）。PDMS分子接枝后，MS表面粗糙度增加，表面能降低，MS表现出超疏水性(接触角（CA） >；155 o)。令人印象深刻的是，制备的SMS在恶劣的化学/物理条件下（例如强酸性/碱性溶液，高/低温环境）表现出优异的油/有机溶剂吸附能力，可回收性和稳定性。SMS作为连续除油装置的核心部件，实现了高效的油水分离。此外，SMS还成功地用于分离非混相油水混合物和表面活性剂稳定的油包水乳状液。因此，这种简单、环保、经济的合成策略可以很容易地整合到工业中，并显示出巨大的环境修复潜力。

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来源期刊

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.