Polyhedral Oligomeric Silsesquioxane Coated Electrospun Nanofibrous PLA Membranes: Properties and Application

IF 4.7 3区工程技术 Q2 ENGINEERING, ENVIRONMENTAL

Journal of Polymers and the Environment Pub Date : 2024-07-13 DOI:10.1007/s10924-024-03350-1

R. Jeeshma, V. V. Arya Lakshmi, Anjana James, Ranimol Stephen

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Abstract

Poly (lactic acid) (PLA) membrane is fabricated through electrospinning, which effectively absorbs oil from the oil/water mixture. The prepared PLA electrospun membrane is hydrophobic with a water contact angle (WCA) of 117.2⁰. Introduction of POSS (polyhedral oligomeric silsesquioxane) particles as nanofiller into the PLA matrix, as well as a coating on the electrospun membrane, appreciably enhances the hydrophobicity and thermal stability of the nanofibrous membranes. The membranes become dense, less porous, and crystalline after heat treatment. The unannealed nanofibrous membrane with a highly porous, oleophilic surface helps to impart higher oil absorption properties than that of annealed membranes, which are 60.45 g/g and 66.03 g/g for palm oil and used engine oil respectively. The as-prepared PLA fibrous membranes can absorb oil from the oil-water interface, showing excellent recyclability and separation efficiency > 70%.

Graphical Abstract

Abstract Image

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多面体低聚硅氧烷涂层电纺纳米纤维聚乳酸膜：特性与应用

通过电纺丝制造出的聚乳酸（PLA）膜可有效吸收油水混合物中的油。制备的聚乳酸电纺丝膜具有疏水性，水接触角（WCA）为 117.2⁰。在聚乳酸基质中引入 POSS（多面体低聚硅倍半氧烷）颗粒作为纳米填料，并在电纺丝膜上进行涂层，可显著增强纳米纤维膜的疏水性和热稳定性。经过热处理后，纳米纤维膜变得致密、少孔和结晶。未退火的纳米纤维膜具有高多孔性和亲油性表面，与退火膜相比，具有更高的吸油性能，对棕榈油和废机油的吸油率分别为 60.45 g/g 和 66.03 g/g。制备的聚乳酸纤维膜能从油水界面中吸收油，显示出卓越的可回收性和 70% 的分离效率。

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来源期刊

Journal of Polymers and the Environment 工程技术-高分子科学

CiteScore

9.50

自引率

7.50%

发文量

297

审稿时长

9 months

期刊介绍： The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.