Three-Dimensional Printable Photocurable Elastomer Composed of Hydroxyethyl Acrylate and Hydroxy Fatty Acid Derived from Waste Cooking Oil: An Innovative Strategy for Sustainable, Highly Flexible Resin Development.

Fangping Shen, Chuanyang Tang, Yang Yang, Guangzhi Qin, Minghui Li, Haitian Jiang, Mengyao Wu, Shuoping Chen

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Article in Molecules (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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8 authors.

Fangping ShenCollege of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China.

Chuanyang TangCollege of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China.

Yang YangCollege of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China.

Guangzhi QinCollege of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China.

Minghui LiCollege of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China.

Haitian JiangCollege of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China.

Mengyao WuCollege of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China.

Shuoping ChenCollege of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China.ORCID 0000-0001-5160-9869

Funding

National Nature Science Foundation of China 51763007National Nature Science Foundation of China 52363015

6 · The paper itself

Abstract

Waste cooking oil (WCO), a significant urban waste stream, presents untapped potential for synthesizing high-value materials. This study introduces an innovative "epoxidation-hydrolysis-blending" strategy to conveniently transform WCO into a highly flexible, photocurable elastomer suitable for 3D printing. Initially, WCO is converted into WCO-based hydroxy fatty acids (WHFA) via epoxidation and hydrolysis, yielding linear chains functionalized with multiple hydrogen-bonding sites. Subsequently, blending WHFA with hydroxyethyl acrylate (HEA) yields a novel photocurable WHFA/HEA elastomer. This elastomer exhibits excellent dimensional accuracy during vat photopolymerization 3D printing. Within the WHFA/HEA system, WHFA acts as a dual-functional modifier: its flexible alkyl chains enhance conformational freedom through plasticization while serving as dynamic hydrogen-bonding cross-linking sites that synergize with HEA chains to achieve unprecedented flexibility via reversible bond reconfiguration. Mechanical testing reveals that the optimized WHFA/HEA elastomer (mass ratio 1:3) exhibits ultra-high flexibility, with an elongation at break of 1184.66% (surpassing pure HEA by 360%). Furthermore, the elastomer demonstrates significant weldability (44.23% elongation retention after 12 h at 25 °C), physical reprocessability (7.60% elongation retention after two cycles), pressure-sensitive adhesion (glass interface adhesion toughness: 32.60 J/m

Indexed as

3D printinghydroxyethyl acrylatehydroxy fatty acidphotocurable elastomerwaste cooking oil

Identifiers

PMID41097420

DOI10.3390/molecules30194000

PMCPMC12525962

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