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<p>The non-biodegradability and environmental persistence of conventional superabsorbent polymers led to the development of biodegradable cellulose-based SAPs (CB-SAPs) via the amalgamation of extracted cellulose from Venezuelan treebine, coupled <i>in situ</i> with polyacrylic acid. The methods investigated cellulose loadings (0.5–2.5&#xa0;wt%) with initiator (0.25–0.75&#xa0;g) and crosslinker (0.05–1.5&#xa0;g) amount while evaluating the conditions such as pH (3–11) and salt in various solutions (NaCl, CaCl<sub>2</sub>, AlCl<sub>3</sub>). Analysis of the plant’s constituents shows high lignin (38.56%), hemicellulose (28.85%) and cellulose (16.64%) content. SEM images revealed a porous and sponge-like architecture for the cellulose and a lamella-layered morphology for CB-SAP. The optimal water absorbency (83.05&#xa0;g/g) occurred at pH 7 with 1&#xa0;wt% cellulose. Salt solutions, particularly with multivalent ions, reduced absorbency and higher initiator and crosslinker levels also decreased performance.</p> Graphical abstract <p></p>

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Cellulose extraction from Venezuelan treebine and fabrication of cellulose-based superabsorbent polymers: Characterization and water absorption analysis

  • 期刊论文

  • 发表日期：

    2025年11月23日

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  • Joshua A. Oyetade,
  • Abigail Nason,
  • Lilian Mulimi,
  • Adeyemi O. Adeeyo,
  • Revocatus L. Machunda

摘要

The non-biodegradability and environmental persistence of conventional superabsorbent polymers led to the development of biodegradable cellulose-based SAPs (CB-SAPs) via the amalgamation of extracted cellulose from Venezuelan treebine, coupled in situ with polyacrylic acid. The methods investigated cellulose loadings (0.5–2.5 wt%) with initiator (0.25–0.75 g) and crosslinker (0.05–1.5 g) amount while evaluating the conditions such as pH (3–11) and salt in various solutions (NaCl, CaCl2, AlCl3). Analysis of the plant’s constituents shows high lignin (38.56%), hemicellulose (28.85%) and cellulose (16.64%) content. SEM images revealed a porous and sponge-like architecture for the cellulose and a lamella-layered morphology for CB-SAP. The optimal water absorbency (83.05 g/g) occurred at pH 7 with 1 wt% cellulose. Salt solutions, particularly with multivalent ions, reduced absorbency and higher initiator and crosslinker levels also decreased performance.

Graphical abstract