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Novel hydrogel obtained by chitosan and dextrin-VA co-polymerization

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Abstract

A novel hydrogel was obtained by reticulation of chitosan with dextrin enzymatically linked to vinyl acrylate (dextrin-VA), without cross-linking agents. The hydrogel had a solid-like behaviour with G′ (storage modulus) >> G″ (loss modulus). Glucose diffusion coefficients of 3.9 × 10−6 ± 1.3 × 10−6 cm2/s and 2.9 × 10−6 ± 0.5 × 10−6 cm2/s were obtained for different substitution degrees of the dextrin-VA (20% and 70% respectively). SEM observation revealed a porous structure, with pores ranging from 50 µm to 150 µm.

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Authors and Affiliations

  1. Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-057, Braga, Portugal

    Reinaldo Ramos, Vera Carvalho & Miguel Gama

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  1. Reinaldo Ramos
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  2. Vera Carvalho
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  3. Miguel Gama
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Correspondence to Miguel Gama.

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Ramos, R., Carvalho, V. & Gama, M. Novel hydrogel obtained by chitosan and dextrin-VA co-polymerization. Biotechnol Lett 28, 1279–1284 (2006). https://doi.org/10.1007/s10529-006-9087-6

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  • DOI: https://doi.org/10.1007/s10529-006-9087-6

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