Dyeing of bacterial cellulose films using plant-based natural dyes

Costa, Andréa Fernanda de Santana; Amorim, Júlia Didier Pedrosa de; Almeida, F. C. G.; Lima, Ivo Diego de; Paiva, Sérgio Carvalho de; Rocha, Maria Alice Vasconcelos; Vinhas, Glória Maria; Sarubbo, Leonie Asfora

doi:10.1016/j.ijbiomac.2018.10.066

Cited by 35 publications

(31 citation statements)

References 36 publications

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“…BCd with 1 mL inoculum harvested on the 18th day had the maximum load of 12.41 N and a tensile strength of 10.343 MPa, compared to the BCm samples, with a less than half that resistance of only 5.571 N and 4.642 MPa, respectively ( Table 2 , Supplementary Materials Table S6 ). The tensile strengths obtained in the current study for BCd is in agreement with previous studies where it ranged between 10.32 [ 30 ] and 48.17 ± 15.38 MPa [ 70 ]. Similarly, BCm tensile strengths of 14.77 [ 1 ] up to 207.0 MPa [ 24 ] were reported.…”

Section: Resultssupporting

confidence: 92%

Optimization of Moist and Oven-Dried Bacterial Cellulose Production for Functional Properties

et al. 2021

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Bacterial cellulose (BC) is a natural polymer with properties suitable for tissue engineering and possible applications in scaffold production. However, current procedures have limitations in obtaining BC pellicles with the desired structural, physical, and mechanical properties. Thus, this study analyzed the optimal culture conditions of BC membranes and two types of processing: draining and oven-drying. The aim was to obtain BC membranes with properties suitable for a wound dressing material. Two studies were carried out. In the preliminary study, the medium (100 mL) was inoculated with varying volumes (1, 2, 3, 4, and 5 mL) and incubated statically for different periods (3, 6, 9, 12, and 18 days), using a full factorial experimental design. Thickness, uniformity, weight, and yield were evaluated. In the optimization study, a Box–Behnken design was used. Two independent variables were used: inoculum volume (X1: 1, 3, and 5 mL) and fermentation period (X2: 6, 12, and 18 d) to determine the target response variables: thickness, swelling ratio, drug release, fiber diameter, tensile strength, and Young’s modulus for both dry and moist BC membranes. The mathematical modelling of the effect of the two independent variables was performed by response surface methodology (RSM). The obtained models were validated with new experimental values and confirmed for all tested properties, except Young’s modulus of oven-dried BC. Thus, the optimal properties in terms of a scaffold material of the moist BC were obtained with an inoculum volume of 5% (v/v) and 16 d of fermentation. While, for the oven-dried membranes, optimal properties were obtained with a 4% (v/v) and 14 d of fermentation.

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Section: Resultssupporting

confidence: 92%

Optimization of Moist and Oven-Dried Bacterial Cellulose Production for Functional Properties

et al. 2021

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“…This natural colorant acts as a substantive dye for protein fiber as well as other textile fibers. It gives textile materials not only an orange color but also antibacterial properties [15,16]. Recently, lawsone has become more important due to its applications in medicine, as an astringent, antiseptic and antipyretic substance [17,18].…”

Section: Introductionmentioning

confidence: 99%

Improved Aging Stability of Ethylene-Norbornene Composites Filled with Lawsone-Based Hybrid Pigment

Marzec

Szadkowski

2019

Polymers

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In this study, we produced a new organic-inorganic hybrid pigment based on a natural chromophore. Lawsone was selected as the active organic compound and incorporated into aluminum-magnesium hydroxycarbonate (LH). The hydroxynaphthoquinone derivative lawsone (Lawsonia inermis L.) is a naturally occurring dye, which is commonly used as a colorant because of its nontoxicity and biological functions. The structure and stability of the hybrid colorant were investigated using 27-Al solid-state nuclear magnetic resonance (NMR) spectroscopy, X-ray diffraction (XRD), secondary ion mass spectrometry (TOF-SIMS), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and UV-Vis spectroscopy. TOF-SIMS and 27Al NMR spectroscopy revealed interactions between the dye molecules and metal ions present in the LH host, confirming successful formation of an LH-based hybrid (LH/lawsone). In the next part of the study, we examined the effect of the hybrid pigment on the mechanical and thermal properties of ethylene-norbornene (EN) materials, as well as the aging resistance of the colored composites to irradiation across the full solar spectrum. Dynamic mechanical analysis (DMA) and the results of tensile break tests revealed that the EN+LH/lawsone composite had significantly better resistance to solar irradiation in comparison to EN and EN with an unmodified carrier.

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“…During elasticity testing, a decrease in strength occurs, leading to cracks in the BC membrane until it ruptures. Thus, the increase in crack propagation occurs very quickly in dry pellicles due to the lack of elasticity (Costa et al 2019).…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Optimization of moist and oven-dried bacterial cellulose production for functional properties

Bodea

Beteg

Pop

et al. 2021

Preprint

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Bacterial cellulose (BC) is a natural polymer with properties suitable for tissue engineering and possible applications in scaffold production. However, current procedures have limitations in obtaining BC pellicles with the desired structural, physical, and mechanical properties. Thus, this study analyzed the optimal culture conditions of BC membranes and 2 types of processing: draining and oven-drying. The aim was to obtain BC membranes with properties suitable for a wound dressing material. Two studies were carried out. In the preliminary study the medium (100 mL) was inoculated with varying volumes (1; 2; 3; 4; and 5 mL) and incubated statically for different periods (3; 6; 9; 12; and 18 days), using a full factorial experimental design. Thickness, uniformity, weight, and yield were evaluated. In the optimization study, a Box–Behnken design was used. Two independent variables were used: inoculum volume (X1: 1; 3; and 5 mL) and fermentation period (X2: 6; 12; and 18 d) to determine the target response variables: thickness, swelling ratio, drug release, fiber diameter, Tensile strength, and Young's Modulus for both dry and moist BC membranes. The mathematical modelling of the effect of the 2 independent variables was accomplished by response surface methodology (RSM). The obtained models were validated with new experimental values, and confirmed for all tested properties, except Young Modulus of oven-dried BC. Thus, the optimal properties in terms of a scaffold material of the moist BC were obtained with an inoculum volume of 5% (v/v) and 16 d of fermentation. While, for the oven-dried membranes a 4% (v/v) and 14 d of fermentation.

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Dyeing of bacterial cellulose films using plant-based natural dyes

Cited by 35 publications

References 36 publications

Optimization of Moist and Oven-Dried Bacterial Cellulose Production for Functional Properties

Optimization of Moist and Oven-Dried Bacterial Cellulose Production for Functional Properties

Improved Aging Stability of Ethylene-Norbornene Composites Filled with Lawsone-Based Hybrid Pigment

Optimization of moist and oven-dried bacterial cellulose production for functional properties

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