Fabrication of Cellulose Aerogel from Sugarcane Bagasse as Drug Delivery Carriers

Chin, Suk‐Fun; Jimmy, Fiona Beragai; Pang, Shengyang

doi:10.21315/jps2016.27.3.10

Cited by 22 publications

(12 citation statements)

References 17 publications

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“…Thus, there was less space available for pore swelling. 32 For samples with the lower percentage of SPW cellulose, 3% and 4% w/v, the swelling ratios were 2.4 g g -1 and 2.0 g g -1 , respectively. For the 3% w/v SPW cellulose sample, no pore was visible, as shown in Figure 2(b).…”

Section: Swelling Kinetic Studiesmentioning

confidence: 91%

Preparation of cellulose hydrogel from sago pith waste as a medium for seed germination

Jampi

Chin

Wasli

et al. 2021

JPS

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A large amount of sago pith waste (SPW) produced by the growing sago industry has become an environmental concern. Instead of disposing as waste, SPW could be converted into a hydrogel and used as a seed germination medium. In this study, a hydrogel was prepared from SPW cellulose fibres via crosslinking with epichlorohydrin (ECH). Fourier transform infrared (FTIR) characterisation showed that pure cellulose fibres extracted from the SPW were successfully crosslinked with ECH to form the hydrogel. Scanning electron microscope (SEM) micrograph of the hydrogel showed a porous microstructure. The optimum hydrogel swelling ratio at 19.9 g g -1 was obtained with 5% w/v SPW cellulose content and 5 ml ECH. In this study, the hydrogel hydration property was demonstrated by using it as a medium for maize seed germination. The germination rate (GR) was observed to be above 70% when SPW cellulose hydrogel alone was used as the medium without the needs for frequent watering.

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Section: Swelling Kinetic Studiesmentioning

confidence: 91%

Preparation of cellulose hydrogel from sago pith waste as a medium for seed germination

Jampi

Chin

Wasli

et al. 2021

JPS

Self Cite

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“…Due to the attractive properties of cellulose such as renewability, biocompatibility, biodegradability, and chemical stability, and important material characteristics of aerogels such as high speci c surface area, low density, and high porosity (Korhonen et al 2011), aerocelluloses are used for a wide range of applications. The products based on aerocelluloses range from high-value products in pharmaceutical and biotech industries (e.g., drug delivery vehicles, cell storage/growth devices, tissue engineering scaffolds (Pircher et al 2015;Chin et al 2016;Soorbaghi et al 2019)) to medium-or low-value products (e.g., adsorbents (Dassanayake et al 2016), oil/water separation agents (Liao et al 2016), chromatographic systems (Luo and Zhang 2010), catalysts (Schestakow et al 2016b), heat insulation materials (Lazzari et al 2019), metal nanoparticle/metal oxide carriers (Wan et al 2016;Tian et al 2017), and energy absorbers (Li et al 2018)). For all these applications, the speci c surface area, porosity and pore size distribution are undoubtedly the most meaningful morphological characteristics of the materials, as they de ne the product performance.…”

Section: Introductionmentioning

confidence: 99%

Tuning the Morphological Properties of Cellulose Aerogels: An Investigation of Salt-Mediated Preparation

Parajuli

Acharya

Shamshina

et al. 2021

Preprint

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In this study, alkali and alkaline earth metal chlorides with different cationic radii (LiCl, NaCl, and KCl, MgCl2, and CaCl2) were used to gain insight into the behavior of cellulose solutions in the presence of salts. The specific focus of the study was evaluation of the effect of salts’ addition on the sol-gel transition of the cellulose solutions and on their ability to form monoliths, as well as evaluation of the morphology (e.g., specific surface area, pore characteristics, and microstructure) of aerocelluloses prepared from these solutions. The effect of the salt addition on the sol-gel transition of cellulose solutions was studied using rheology, and morphology of resultant aerogels was evaluated by Scanning Electron Microscopy (SEM) and Brunauer-Emmett-Teller (BET) analysis, while the salt influence on the aerocelluloses’ crystalline structure and thermal stability was evaluated using powder X-Ray Diffraction (pXRD) and Thermogravimetric Analysis (TGA), respectively. The study revealed that the effect of salts’ addition was dependent on the component ions and their concentration. The addition of salts in the amount below certain concentration limit significantly improved the ability of the cellulose solutions to form monoliths and reduced the sol-gel transition time. Salts of lower cationic radii had a greater effect on gelation. However, excessive amount of salts resulted in the formation of fragile monoliths or no formation of gels at all. Analysis of surface morphology demonstrated that the addition of salts resulted in a significant increase in porosity and specific surface area, with salts of lower cationic radii leading to aerogels with much larger (~1.5 and 1.6-fold for LiCl and MgCl2, respectively) specific surface area compared to aerocelluloses prepared with no added salt. Thus, by adding the appropriate salt into the cellulose solution prior to gelation, the properties of aerocelluloses that control material’s performance (specific surface area, density, and porosity) could be tailored for a specific application.

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“…Multiple reviews on applications of cellulose aerogels are available elsewhere (Budtova 2019;Cai et al 2014;Mirtaghavi et al 2020;Khalil et al 2020;Garba et al 2020). The products based on aerocelluloses range from high-value products in pharmaceutical and biotech industries (e.g., drug delivery vehicles, cell storage/growth devices, tissue engineering scaffolds (Pircher et al 2015;Chin et al 2016;Cai et al 2014) to medium-or low-value products (e.g., adsorbents (Dassanayake et al 2016), oil/water separation agents (Liao et al 2016), chromatographic systems (Luo and Zhang 2010), catalysts (Schestakow et al 2016b), heat insulation materials (Lazzari et al 2019), metal nanoparticle/metal oxide carriers (Wan et al 2016;Tian et al 2017), and energy absorbers (Li et al 2018)). For all these applications, the specific surface area, porosity and pore size distribution are undoubtedly the most meaningful morphological characteristics of the materials, as they define the product performance.…”

Section: Introductionmentioning

confidence: 99%

Tuning the morphological properties of cellulose aerogels: an investigation of salt-mediated preparation

et al. 2021

View full text Add to dashboard Cite

In this study, alkali and alkaline earth metal chlorides with different cationic radii (LiCl, NaCl, and KCl, MgCl2, and CaCl2) were used to gain insight into the behavior of cellulose solutions in the presence of salts. The specific focus of the study was on the evaluation of the effect of salts’ addition on the sol–gel transition of the cellulose solutions and on their ability to form monoliths, as well as the evaluation of the morphology (e.g., specific surface area, pore characteristics, and microstructure) of aerocelluloses prepared from these solutions. The effect of the salt addition on the sol–gel transition of cellulose solutions was studied using rheology, and morphology of resultant aerogels was evaluated by scanning electron microscopy and Brunauer–Emmett–Teller analysis, while the salt influence on the aerocelluloses’ crystalline structure and thermal stability was evaluated using powder X-ray diffraction and thermogravimetric analysis, respectively. The study revealed that the effect of salts’ addition was dependent on the component ions and their concentration. The addition of salts in the amount below certain concentration limit significantly improved the ability of the cellulose solutions to form monoliths and reduced the sol–gel transition time. Salts of lower cationic radii had a greater effect on gelation. However, excessive amount of salts resulted in the formation of fragile monoliths or no formation of gels at all. Analysis of surface morphology demonstrated that the addition of salts resulted in a significant increase in porosity and specific surface area, with salts of lower cationic radii leading to aerogels with much larger (~ 1.5 and 1.6-fold for LiCl and MgCl2, respectively) specific surface area compared to aerocelluloses prepared with no added salt. Thus, by adding the appropriate salt into the cellulose solution prior to gelation, the properties of aerocelluloses that control material’s performance (specific surface area, density, and porosity) could be tailored for a specific application. Graphic abstract

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Fabrication of Cellulose Aerogel from Sugarcane Bagasse as Drug Delivery Carriers

Cited by 22 publications

References 17 publications

Preparation of cellulose hydrogel from sago pith waste as a medium for seed germination

Preparation of cellulose hydrogel from sago pith waste as a medium for seed germination

Tuning the Morphological Properties of Cellulose Aerogels: An Investigation of Salt-Mediated Preparation

Tuning the morphological properties of cellulose aerogels: an investigation of salt-mediated preparation

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