Preparation and Characterization of Gelatin-Agarose and Gelatin-Starch Blends Using Alkaline Solvent

Dzeikala, Oleksandra; Prochoń, Mirosława; Marzec, Anna; Szczepanik, Szymon

doi:10.3390/ijms24021473

Cited by 5 publications

(10 citation statements)

References 41 publications

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“…Agar's stable polysaccharide structure, decreased nutritional source, and limited water solubility at the investigated temperature of 58 °C makes it more resistant to degradation. The found data is in line with other studies [45] reporting slower degradation rates of agar.…”

Section: Biodegradationsupporting

confidence: 93%

Biopolymer Cryogels for Transient Ecology‐Drones

Wiesemüller

Meyer

et al. 2023

Advanced Intelligent Systems

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Natural forests are one of the world's largest carbon sinks, absorbing approximately two billion tonnes of CO 2 per year. [1,2] To improve understanding of forest ecosystems and develop conservation strategies, more sophisticated energy balance models need to be developed. [3] Research activities must focus on understanding changes in the vegetative phenology and the ecosystem energy or mass exchanges, which influence the ecosystem carbon production and productivity levels. [4][5][6] Many factors need to be studied and modeled to estimate CO 2 budgets [7] and guide policymakers and environmentalists toward efficient strategies for carbon sequestration in forests. [8] To develop these models, environmental data with high temporal and spatial resolution is of the utmost importance. This requires time-consuming, complex, and expensive methods to manually distribute build-to-last sensing devices with human workers. [9] These sensing devices still pose a threat to the environment in which they are deployed in, as they are nondegradable and potentially toxic.

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Section: Biodegradationsupporting

confidence: 93%

Biopolymer Cryogels for Transient Ecology‐Drones

Wiesemüller

Meyer

et al. 2023

Advanced Intelligent Systems

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“…The results and their standard deviations are presented in Table 8. Based on the results obtained, it can be concluded that the introduction of polysaccharides into the blends leads to an increase in hardness and a decrease in elongation at break, and the results are comparable to the results of measurements performed for similar systems [42,[44][45][46][47]. The decrease in the value of the relative elongation of compositions containing polysaccharide may be related to the formation of a larger number of gelatine-polysaccharide bonds in the blend network, formed due to the presence of functional groups attached to the pyranose ring of agar and carrageenan.…”

Section: Mechanical Propertiessupporting

confidence: 79%

“…Determining the surface energy using three liquids, water, ethylene glycol, and diiodomethane, required measuring the contact angles of drops of each liquid on the surface of the samples. The measurement results in the form of average surface energy values are presented in Table 7 and correspond to the literature results [42,45]. The polar component for samples with added polysaccharides decreases with the increasing weight of these additives, which indicates a decrease in the hydrophilic properties of the blends made.…”

Section: Density Of the Blendssupporting

confidence: 78%

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Gelatine Blends Modified with Polysaccharides: A Potential Alternative to Non-Degradable Plastics

Dzeikala,

Prochon,

Sedzikowska

2024

IJMS

Self Cite

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Non-degradable plastics of petrochemical origin are a contemporary problem of society. Due to the large amount of plastic waste, there are problems with their disposal or storage, where the most common types of plastic waste are disposable tableware, bags, packaging, bottles, and containers, and not all of them can be recycled. Due to growing ecological awareness, interest in the topics of biodegradable materials suitable for disposable items has begun to reduce the consumption of non-degradable plastics. An example of such materials are biodegradable biopolymers and their derivatives, which can be used to create the so-called bioplastics and biopolymer blends. In this article, gelatine blends modified with polysaccharides (e.g., agarose or carrageenan) were created and tested in order to obtain a stable biopolymer coating. Various techniques were used to characterize the resulting bioplastics, including Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA)/differential scanning calorimetry (DSC), contact angle measurements, and surface energy characterization. The influence of thermal and microbiological degradation on the properties of the blends was also investigated. From the analysis, it can be observed that the addition of agarose increased the hardness of the mixture by 27% compared to the control sample without the addition of polysaccharides. In addition, there was an increase in the surface energy (24%), softening point (15%), and glass transition temperature (14%) compared to the control sample. The addition of starch to the gelatine matrix increased the softening point by 15% and the glass transition temperature by 6%. After aging, both compounds showed an increase in hardness of 26% and a decrease in tensile strength of 60%. This offers an opportunity as application materials in the form of biopolymer coatings, dietary supplements, skin care products, short-term and single-contact decorative elements, food, medical, floriculture, and decorative industries.

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“…In accordance with the above, and to develop planet-friendly alternatives, numerous studies have been carried out on biocomposite and/or bioplastics, which seek to take advantage of biological material to replace conventional plastics [5][6][7][8][9][10][11][12][13][14][15][16][17][18], generating products with similar characteristics (high strength, durability, and robustness, among others), but with shorter degradation times and cleaner processes. However, the bioplastics industry faces challenges, such as high production costs, limited availability of raw materials, inferior mechanical properties compared to conventional plastics [19,20], the need for hightemperature composting facilities, and competition for land use.…”

Section: Introductionmentioning

confidence: 99%

Study of the Degradation of a TPS/PCL/Fique Biocomposite Material in Soil, Compost, and Water

Mosquera Rodríguez,

Quintero Vélez,

Córdoba Urrutia

et al. 2023

Polymers

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The degradability of the biocomposite produced from a binary mixture of thermoplastic banana starch (TPS) and polycaprolactone (PCL) reinforced with fique fibers (Fs) was evaluated in three different environments (soil, compost, water). An experimental design with two factors (soil and compost) and three levels (5, 10, and 20 cm) was used, with additional tests for a third aqueous environment (water from the lake of the Universidad del Valle) at a depth of 20 cm. The biocomposite was prepared from the implementation of a twin-screw extrusion process of the binary mixture TPS/PCL and fique fibers (54, 36, and 10% composition, respectively), followed by hot compression molding, and after that, generating ASTM D638 type V specimens using a stainless-steel die. The specimens were dried and buried according to the experimental design, for a total experimental time of 90 days, and removing samples every 30 days. After 90 days, all samples showed signs of degradation, where the best results were obtained in the compost at a depth of 20 cm (34 ± 4% mass loss and a decrease in tensile strength of 77.3%, which indicates that the material lost mechanical properties). TPS was the fastest disappearing component and promoted the degradation of the composite material as it disappeared. Finally, the aqueous media presented the lowest degradation results, losing only 20% of its initial mass after 90 days of the experiment, being the least effective environment in which the biocomposite can end up.

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Preparation and Characterization of Gelatin-Agarose and Gelatin-Starch Blends Using Alkaline Solvent

Cited by 5 publications

References 41 publications

Biopolymer Cryogels for Transient Ecology‐Drones

Biopolymer Cryogels for Transient Ecology‐Drones

Gelatine Blends Modified with Polysaccharides: A Potential Alternative to Non-Degradable Plastics

Study of the Degradation of a TPS/PCL/Fique Biocomposite Material in Soil, Compost, and Water

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