Modification of bacterial cellulose with organosilanes to improve attachment and spreading of human fibroblasts

Taokaew, Siriporn; Phisalaphong, Muenduen; Newby, Bi‐min Zhang

doi:10.1007/s10570-015-0651-x

Cited by 62 publications

(64 citation statements)

References 66 publications

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“…40 Similarly, in cases of bacterial keratitis, BNC could be impregnated with antibiotics to act as a medication reservoir. In this direction, BNC is also well known to support the culture of several cell types [50][51][52] including retinal pigment epithelial cells. 20,53 These reports, together with the findings presented here, suggest further uses of BNC as a cell carrier for corneal cell therapies.…”

Section: Biomaterials Science Papermentioning

confidence: 99%

Bacterial nanocellulose as a corneal bandage material: a comparison with amniotic membrane

et al. 2020

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Section: Biomaterials Science Papermentioning

confidence: 99%

Bacterial nanocellulose as a corneal bandage material: a comparison with amniotic membrane

et al. 2020

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“…The deconvolution of N1s levels produced two peaks at 399.0 and 399.9 eV (( Figure 4b). The peak at 399.0 eV was attributed to free amine groups (Taokaew, Phisalaphong, & Newby, 2015). The other peak at 399.9 eV indicated that some amino groups may undergo H-bonding with each other or with substrate hydroxyls (Meng et al, 2015).…”

Section: Xps Analysismentioning

confidence: 99%

Preparation of aminoalkyl‐grafted bacterial cellulose membranes with improved antimicrobial properties for biomedical applications

Zhang

Zheng

et al. 2020

J Biomedical Materials Res

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Bacterial cellulose (BC) membranes display special properties and structures, thus attracting much attention in application in the biomedical areas, for example, as implants for bone or cartilage tissue engineering, as substitutes for skin repairing, and as supports for controlled drug delivery. However, native BC lacks the activity to inhibit bacteria growth on its surface, which limits its applications in biomedical fields. There have been reports on chemical modification of BC membranes to endow them with antimicrobial properties needed for some special biomedical applications. In the present study, aminoalkyl‐grafted BC membranes were prepared by alkoxysilane polycondensation using 3‐aminopropyltriethoxysilane (APTES). The characterization for morphology and chemical composition showed that BC membranes were successfully grafted with aminoalkylsilane groups through covalent bonding. The surface morphology and roughness of the membranes changed after chemical grafting. Furthermore, after grafting with APTES, the membranes got less hydrophilic than native BC. The aminoalkyl‐grafted BC membranes showed strong antibacterial properties against Staphylococcus aureus and Escherichia coli and moreover, they were nontoxic to normal human dermal fibroblasts. These results indicate that aminoalkyl‐grafted BC membranes are potential to be used for biomedical applications.

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“…Besides O1s (532 eV) and C1s (285 eV) peaks, the spectrum of untreated BC contains traces of other elements, such as nitrogen (N) ( Table 2), at 399 eV. Earlier studies have shown that traces of N may appear because of the residual proteins from BC-producing bacteria [10]. The elemental compositions of the surface layer (~7 nm) of BC are shown in Table 2 and confirm the presence of the O and C as main elements.…”

Section: Xps Analysismentioning

confidence: 99%

Surface Treatment of Bacterial Cellulose in Mild, Eco-Friendly Conditions

et al. 2018

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Bacterial cellulose (BC) with increased hydrophobicity is required for several applications including packaging. Surface functionalization of BC may provide good resistance to moisture, increased barrier properties or improved compatibility to polymer matrices. For this purpose, chemical grafting of BC in mild, eco-friendly conditions was carried out using different agents. BC membranes were surface functionalized with vinyl-triethoxy silane (VS) or 3-aminopropyl triethoxysilane (APS), by acylation and acrylation. The efficiency of the surface treatments was highlighted by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy, by contact angle measurements and by dynamic mechanical analysis. The morphological investigation by atomic force microscopy and scanning electron microscopy revealed an increased compactness for surface functionalized BC, which correlated well with the different increase of the contact angle. BC treated with APS and VS showed more than a twofold increase in contact angle value. Similarly, the crystallinity degree was reduced to 69.6% and 72.9% after APS and VS treatments as compared with 84.1% for untreated BC, confirming the grafting reaction and the decrease in hydrogen bonding. All the applied treatments delayed the degradation of BC. However, the highest increase in thermal stability was observed for silanes treated membranes. Effective, eco-friendly methods for improving the surface hydrophobicity of bacterial cellulose for food packaging were proposed in this study.

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Modification of bacterial cellulose with organosilanes to improve attachment and spreading of human fibroblasts

Cited by 62 publications

References 66 publications

Bacterial nanocellulose as a corneal bandage material: a comparison with amniotic membrane

Bacterial nanocellulose as a corneal bandage material: a comparison with amniotic membrane

Preparation of aminoalkyl‐grafted bacterial cellulose membranes with improved antimicrobial properties for biomedical applications

Surface Treatment of Bacterial Cellulose in Mild, Eco-Friendly Conditions

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