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Degradable Polymer-Based Oil–Water Separation Materials Prepared by High Internal Phase Emulsion Templating Method and Silica-Modification.

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Title: Degradable Polymer-Based Oil–Water Separation Materials Prepared by High Internal Phase Emulsion Templating Method and Silica-Modification.
Authors: Hu, Yunpeng1 (AUTHOR), Lu, Jianqiao1,2 (AUTHOR), Li, Maoning1 (AUTHOR), Du, Qingyuan1,2 (AUTHOR), Zhao, Jing1 (AUTHOR), Li, Dandan1 (AUTHOR), Meng, Xiangrui1 (AUTHOR), Nan, Yu2 (AUTHOR), Zhang, Zhi2 (AUTHOR), Sun, Dazhi1 (AUTHOR) sundz@sustech.edu.cn
Source: Polymers (20734360). Dec2025, Vol. 17 Issue 24, p3254. 19p.
Subjects: Oil separators, Superhydrophobic surfaces, Silica, Mechanical behavior of materials, Sustainability, Biodegradable plastics, Foam, Emulsions
Abstract: The development of oil–water separation materials that combine high separation efficiency, robust mechanical properties, and environmental degradability remains a significant challenge. This study presents a novel degradable and superhydrophobic porous material fabricated via a multi-step process. A porous foam was first synthesized from degradable poly(ε-caprolactone-co-2-ethylhexyl acrylate) using a high internal phase emulsion templating technique. The foam was subsequently modified through in situ silica (SiO2) deposition via a sol–gel process, followed by grafting with hydrophobic hexadecyltrimethoxysilane (HDTMS) to produce the final oil–water separation porous materials. Various characterization results showed that the optimized material featured a hierarchical pore structure in micro scales and the porosity of the foam remained ~90% even after the 2-step modification. Mechanical tests indicate that the modified material exhibited significantly enhanced compressive strength and the water contact angle measurements revealed a superhydrophobic surface with a value of approximately 156°. The prepared material demonstrated excellent oil/water separation performance with notable absorption capacities ranging from 4.11 to 4.90 g/g for oils with different viscosity. Additionally, the porous material exhibited exceptional cyclic stability, maintaining over 90% absorption capacity after 10 absorption-desorption cycles. Moreover, the prepared material achieved a mass loss of approximately 30% within the first 3 days under alkaline hydrolysis conditions (pH 12, 25 °C), which further escalated to ~70% degradation within four weeks. The current work establishes a feasible strategy for developing sustainable, high-performance oil–water separation materials through rational structural design and surface engineering. [ABSTRACT FROM AUTHOR]
Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
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  Data: Degradable Polymer-Based Oil–Water Separation Materials Prepared by High Internal Phase Emulsion Templating Method and Silica-Modification.
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  Data: <searchLink fieldCode="AR" term="%22Hu%2C+Yunpeng%22">Hu, Yunpeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lu%2C+Jianqiao%22">Lu, Jianqiao</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Maoning%22">Li, Maoning</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Du%2C+Qingyuan%22">Du, Qingyuan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Jing%22">Zhao, Jing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Dandan%22">Li, Dandan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Meng%2C+Xiangrui%22">Meng, Xiangrui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nan%2C+Yu%22">Nan, Yu</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Zhi%22">Zhang, Zhi</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sun%2C+Dazhi%22">Sun, Dazhi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> sundz@sustech.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Dec2025, Vol. 17 Issue 24, p3254. 19p.
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  Data: <searchLink fieldCode="DE" term="%22Oil+separators%22">Oil separators</searchLink><br /><searchLink fieldCode="DE" term="%22Superhydrophobic+surfaces%22">Superhydrophobic surfaces</searchLink><br /><searchLink fieldCode="DE" term="%22Silica%22">Silica</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Sustainability%22">Sustainability</searchLink><br /><searchLink fieldCode="DE" term="%22Biodegradable+plastics%22">Biodegradable plastics</searchLink><br /><searchLink fieldCode="DE" term="%22Foam%22">Foam</searchLink><br /><searchLink fieldCode="DE" term="%22Emulsions%22">Emulsions</searchLink>
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  Label: Abstract
  Group: Ab
  Data: The development of oil–water separation materials that combine high separation efficiency, robust mechanical properties, and environmental degradability remains a significant challenge. This study presents a novel degradable and superhydrophobic porous material fabricated via a multi-step process. A porous foam was first synthesized from degradable poly(ε-caprolactone-co-2-ethylhexyl acrylate) using a high internal phase emulsion templating technique. The foam was subsequently modified through in situ silica (SiO2) deposition via a sol–gel process, followed by grafting with hydrophobic hexadecyltrimethoxysilane (HDTMS) to produce the final oil–water separation porous materials. Various characterization results showed that the optimized material featured a hierarchical pore structure in micro scales and the porosity of the foam remained ~90% even after the 2-step modification. Mechanical tests indicate that the modified material exhibited significantly enhanced compressive strength and the water contact angle measurements revealed a superhydrophobic surface with a value of approximately 156°. The prepared material demonstrated excellent oil/water separation performance with notable absorption capacities ranging from 4.11 to 4.90 g/g for oils with different viscosity. Additionally, the porous material exhibited exceptional cyclic stability, maintaining over 90% absorption capacity after 10 absorption-desorption cycles. Moreover, the prepared material achieved a mass loss of approximately 30% within the first 3 days under alkaline hydrolysis conditions (pH 12, 25 °C), which further escalated to ~70% degradation within four weeks. The current work establishes a feasible strategy for developing sustainable, high-performance oil–water separation materials through rational structural design and surface engineering. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/polym17243254
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      – Code: eng
        Text: English
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        PageCount: 19
        StartPage: 3254
    Subjects:
      – SubjectFull: Oil separators
        Type: general
      – SubjectFull: Superhydrophobic surfaces
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      – SubjectFull: Silica
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      – SubjectFull: Mechanical behavior of materials
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      – SubjectFull: Emulsions
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              Text: Dec2025
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