Cellulose-based materials from orange bagasse employing environmentally friendly approaches

Mantovan, Janaína; Giraldo, Gina Alejandra Gil; Marim, Beatriz Marjorie; Garcia, Patrícia Salomão; Baron, Alessandra Machado; Mali, Suzana

doi:10.1007/s13399-021-01279-2

Cited by 15 publications

(13 citation statements)

References 58 publications

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“…It can be seen that in all hydrogels samples (Fig. 2b) da band at 1650 cm − 1 , which can be an indicative of the formation of hydrogen bonds between OH groups of starch and cellulose with amine groups of gelatin [43]. Lu et al [44] also reported that free carboxylic groups of gelatin can be esteri ed with hydroxyl groups of other polymers, such as cellulose and starch.…”

Section: Microtomography and Porositymentioning

confidence: 76%

“…4 and Table 3, respectively. All samples had a similar shape characteristic of hydrophilic materials and most starch and cellulose based materials [43] which means that hydrogels produced by reactive extrusion have a high a nity for water when exposed to high activity of water (a w ). The GAB model was e cient to describe the moisture sorption isotherms of the hydrogel samples (R2 = 0.99).…”

Section: Moisture Sorption Isothermsmentioning

confidence: 89%

“…2b) appeared in all hydrogels samples without any difference in intensity or shift, including the sample prepared with STMP-modi ed cellulose (S.MS-MC-G). This occurred probably due to the low concentration of STMP used, and additionally these bands may be covered by other bands between 1200 and 800 cm − 1 , which is characteristic of starch and cellulose [41,42]. Some authors reported that they did not detect these phosphate bands in crosslinked STMP starch and cellulose, and they attributed this to the low concentration of phosphate groups [36,39].…”

Section: Microtomography and Porositymentioning

confidence: 99%

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Starch-cellulose-gelatin hydrogels obtained by reactive extrusion aiming an ecologically friendly perspective

MARIM,

Pereira,

Andrello

et al. 2023

Preprint

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Biopolymeric hydrogels represent a versatile class of materials with a wide range of potential applications, including their use in agricultural materials, drug delivery systems, biosensors, and food packaging. This investigation primarily centered on the synthesis and characterization of biodegradable hydrogels based on starch, cellulose, and gelatin, acting as a polymeric matrix intended for water retention in agricultural contexts. Prior to their incorporation into the hydrogels formulations, cassava starch and cellulose extracted from oat hulls underwent modification via reactive extrusion involving reaction with citric acid (CA) and sodium trimetaphosfate (STMP) as crosslinking agents, respectively. The hydrogels were obtained through a reactive extrusion process to produce porous pellets. These pellets were characterized according to their porosity, thermal properties, degree of swelling at different times and pHs, and water adsorption capacities. The hydrogel sample formulated with both CA-modified starch and STMP-modified cellulose, and gelatin, presented the highest values of porosity (> 45%) and open pores (> 5%), and the higher degree of swelling (607%). These materials as promising candidates for application in agriculture to increase water and/or fertilizers retention capacity in soil, with important advantages, including their biodegradability and low toxicity. It is worth mentioning that the reactive extrusion process used is a continuous process, with low effluent generation and scalable for large-scale production.

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Section: Microtomography and Porositymentioning

confidence: 76%

Section: Moisture Sorption Isothermsmentioning

confidence: 89%

Section: Microtomography and Porositymentioning

confidence: 99%

See 1 more Smart Citation

Starch-cellulose-gelatin hydrogels obtained by reactive extrusion aiming an ecologically friendly perspective

MARIM,

Pereira,

Andrello

et al. 2023

Preprint

Self Cite

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“…Nonetheless, it can release the water into the medium when mechanically deformed to maintain the system equilibrium. Despite this fact, its permeability is extremely low [51]. Swelling capacity (SC) tests were conducted to assess the behavior and affinity of the studied filaments with water.…”

Section: Swelling Capacitymentioning

confidence: 99%

3D Printing for Cartilage Replacement: A Preliminary Study to Explore New Polymers

2022

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The use of additive manufacturing technologies for biomedical applications must begin with the knowledge of the material to be used, by envisaging a very specific application rather than a more general aim. In this work, the preliminary study was focused on considering the cartilaginous tissue. This biological tissue exhibits different characteristics, such as thickness and mechanical properties, depending on its specific function in the body. Due to the lack of vascularization, cartilage is a supporting connective tissue with limited capacity for recovery and regeneration. For this reason, any approach, whether to repair/regenerate or as a total replacement, needs to fulfill the adequate mechanical and chemical properties of the surrounding native cartilage to be successful. This work aims to explore the possibility of using new polymers for cartilage total replacement approaches with polymeric materials processed with the specific 3D printing technique of fused filament fabrication (FFF). The materials studied were Nylon® 12 (PA12), already described for this purpose, and LAY-FOMM® 60 (FOMM). FOMM has not been described in the literature for biomedical purposes. Therefore, the chemical, thermal, swelling capacity, and mechanical properties of the filaments were thoroughly characterized to better understand the structure–properties–application relationships of this new polymer. In addition, as the FFF technology is temperature based, the properties were also evaluated in the printed specimens. Due to the envisaged application, the specimens were also characterized in the wet state. When comparing the obtained results with the properties of native cartilage, it was possible to conclude that: (i) PA12 exhibits low swelling capacity, while FOMM, in its dry and wet forms, has a higher swelling capacity, closer to that of native cartilage; (ii) the mechanical properties of the polymeric materials, especially PA12, are higher than those of native cartilage; and (iii) from the mechanical properties evaluated by ultra-micro hardness tests, the values for FOMM indicate that this material could be a good alternative for cartilage replacement in older patients. This preliminary study, essentially devoted to expanding the frontiers of the current state of the art of new polymeric materials, provides valuable indications for future work targeting the envisaged applications.

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“…In general, each type of agro-industrial residue requires specific studies to optimize its use for cellulose production due to great variations in the chemical composition of agroindustrial residues, as well as preferably meeting the current demands for sustainable and competitive technological solutions. Conventional processes use a considerable amount of energy and an abundant number of reagents, including chlorinated agents, thus resulting in toxic effluents [1,2].…”

Section: Introductionmentioning

confidence: 99%

Modification of Orange Bagasse with Reactive Extrusion to Obtain Cellulose-Based Materials

2022

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Orange bagasse (OB) could be considered a sustainable, renewable, and low-cost biomass for the extraction of cellulose. In this context, reactive extrusion can be considered an excellent, eco-friendly, alternative process for the extraction of cellulose from lignocellulosic materials. Thus, the present study aimed to obtain cellulose-based materials with a reactive extrusion process and also to investigate the impact of pectin on the delignification process. Two groups of samples (OB and depectinizated OB) were submitted to extrusion with sulfuric acid or sodium hydroxide in one-step processes. The cellulose content of extruded materials was highly affected by pectin content in the raw material; the thermal profile (TGA curves) and crystallinity also changed. The cellulose content of modified materials ranged from 18.8% to 58.4%, with a process yield of 30.6% to 79.2%. The alkaline reagent provided the highest cellulose content among all extrusion treatments tested, mainly for OB without pectin. The extrusion process was considered an efficient and promising process for extracting cellulose from citrus residue. Materials produced in this study can be used as sources of cellulose fiber for various products and processes, such as in the food industry, fermentation substrates, or refined applications after subsequent treatments.

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Cellulose-based materials from orange bagasse employing environmentally friendly approaches

Cited by 15 publications

References 58 publications

Starch-cellulose-gelatin hydrogels obtained by reactive extrusion aiming an ecologically friendly perspective

Starch-cellulose-gelatin hydrogels obtained by reactive extrusion aiming an ecologically friendly perspective

3D Printing for Cartilage Replacement: A Preliminary Study to Explore New Polymers

Modification of Orange Bagasse with Reactive Extrusion to Obtain Cellulose-Based Materials

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