Design of cellulose–alginate films using PEG/NaOH aqueous solution as co-solvent

Cernencu, Alexandra I.; Lungu, Adriana; Dragusin, Diana Maria; Serafim, Andrada; Vasile, Eugeniu; Ionescu, Cristina; Iovu, Horia

doi:10.1007/s10570-017-1412-9

Cited by 7 publications

(2 citation statements)

References 38 publications

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“…When developing new biomaterials, natural polymers are often preferred to other classes of materials, as a result of their higher biocompatibility and similarities to human body constituents. For instance, some of the most popular natural biopolymers are chitosan [2], collagen [3] and gelatin [4], hyaluronic acid [5], sodium alginate [6,7], nanocellulose [8] and silk fibroin [9].…”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide Reinforcing Genipin Crosslinked Chitosan-Gelatin Blend Films

et al. 2020

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This study was targeted towards the synthesis and characterization of new chitosan–gelatin biocomposite films reinforced with graphene oxide and crosslinked with genipin. The composites’ mode of structuration was characterized by Fourier Transform Infrared spectroscopy and X-ray diffraction, while morphology and topography were investigated by scanning electron microscopy, nano-computer tomography and profilometry. Eventually, thermal stability was evaluated through thermogravimetrical analysis, mechanical properties assessment was carried out to detect potential improvements as a result of graphene oxide (GO) addition and in vitro enzyme degradation was performed to discern the most promising formulations for the maturation of the study towards in vivo assays. In accordance with similar works, results indicated the possibility of using GO as an agent for adjusting films’ roughness, chemical stability and polymer structuration. The enzymatic stability of chitosan–gelatin (CHT-GEL) films was also improved by genipin (GEN) crosslinking and GO supplementation, with the best results being obtained for CHT-GEL-GEN and CHT-GEL-GEN-GO3 (crosslinked formulation with 3 wt.% GO). Yet, contrary to previous reports, no great enhancement of CHT-GEN-GEL-GO thermal performances was obtained by the incorporation of GO.

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Section: Introductionmentioning

confidence: 99%

Graphene Oxide Reinforcing Genipin Crosslinked Chitosan-Gelatin Blend Films

et al. 2020

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“…The mechanical properties of the blend membrane were improved with the increasing of cellulose content, which is related to the good miscibility of cellulose and alginate. And NaOH and poly(ethylene glycol) are also used as the co‐solvent for cellulose and sodium alginate . Then, the flexible and stable cellulose/alginate blend films were prepared using calcium chloride and epichlorohydrin as cross‐linking agents.…”

Section: Introductionmentioning

confidence: 99%

Rheology of Cellulose/Alginic Acid Blends with 1‐Allyl‐3‐Methylimidazolium Chloride as Solvent

Yao

Sheng

et al. 2019

Polymer Engineering & Sci

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In this study, cellulose/alginic acid blend solutions were prepared with 1-allyl-3-methylimidazolium chloride as solvent. The effect of cellulose/alginic acid blend ratios on the rheological properties was studied. It was found that the viscosity and dynamic modulus decreased with the increase of alginic acid ratio. And the calculated viscosity values, which were obtained from the log-additivity rule, are less than the experimental viscosity values. This may be caused by the hydrogen bonding interaction between cellulose and alginic acid, which is beneficial to the miscibility of the blends. In order to prove the rheological result, cellulose/calcium alginate films were prepared from the solution, the hydrogen bonding between cellulose and alginate were investigated, which was related to the good miscibility of the blend solutions. POLYM. ENG. SCI., 60:243-249, 2020.

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