Potassium ions release from polysaccharide films

Oliveira, Alberto de; Silveira, Cristian Berto da; Ernani, Paulo Roberto; Balbinot, Elisandro S; Soldi, Valdir

doi:10.1590/s0103-50532011000200004

Cited by 14 publications

(12 citation statements)

References 19 publications

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“…In both the spectra, a wide absorption band between 3800 and 3000 cm −1 , associated with free and bonded hydroxyl groups was observed. 15 At 3334 cm −1 , asymmetric bands associated with C=O stretching (carboxyl groups) were observed. For untreated film, the absorption band which was observed at 1625 cm −1 is missing in treated film indicating the cross linking of carboxylic groups with Al 3+ .…”

Section: Resultsmentioning

confidence: 99%

Paper-reinforced sodium alginate/carboxyl methyl cellulose-based bio-composite films

Kale

Maurya

Potdar

2017

Journal of Plastic Film & Sheeting

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Waste paper-reinforced sodium alginate/carboxymethyl cellulose (NaCMC)-based bio-composite films were prepared by solution casting method by optimum combination of 1.5% sodium alginate and 1.5% NaCMC. The optimum combination was selected on the basis of good tensile strength and low moisture sensitivity. This film was further subjected to aqueous solution of potassium aluminium sulphate (potassium alum) to reduce water vapour permeability and moisture content. This potassium alum solution treatment further enhanced the mechanical and thermal properties, and the film biodegradability was not affected either due to the cross linking or colour addition, which has potential as a substitute for the currently used polyethylene-based films. Molecular interactions between polymers and potassium alum affected mechanical, thermal, and other properties and was confirmed by Fourier transform infrared spectroscopy, X-ray diffraction, energy dispersive X-ray, and thermo gravimetric analysis of the films. This bio-composite film may be suitable to replace non-biodegradable and costly biodegradable packaging materials.

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Section: Resultsmentioning

confidence: 99%

Paper-reinforced sodium alginate/carboxyl methyl cellulose-based bio-composite films

Kale

Maurya

Potdar

2017

Journal of Plastic Film & Sheeting

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“…A less common approach is to incorporate nutrients directly into a biodegradable polymer to create a polymer–fertilizer composite . This method relies on polymer biodegradation by soil microbes or biophysical-edaphic factors to release the fertilizer cargo. − Volova et al found that urea embedded in a biodegradable polymer provided controlled N release to lettuce, leading to reduced nutrient runoff and greater plant biomass. The ultimate utility of these materials depends on how well they support plant performance; however, there are few available plant-based studies and those that have been published are on short time scales .…”

Section: Introductionmentioning

confidence: 99%

“…The ultimate utility of these materials depends on how well they support plant performance; however, there are few available plant-based studies and those that have been published are on short time scales . Many studies only examine nutrient release in well-controlled laboratory settings (e.g., water), without probing the more complex and dynamic interplay that may exist in true agricultural settings, including the effects of soil factors and microbial activity. ,,− Moreover, many studies rely on complex and costly polymer synthesis procedures that are not amenable to scaling and commercialization. , …”

Section: Introductionmentioning

confidence: 99%

Biodegradable Polymer Nanocomposites Provide Effective Delivery and Reduce Phosphorus Loss during Plant Growth

Sigmon

Adisa

Liu

et al. 2021

ACS Agric. Sci. Technol.

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Although phosphorus (P) is an essential element, its availability to plants is often limited, and P-containing fertilizers must be supplemented to stimulate plant performance. However, the inefficiencies and negative environmental impacts associated with current nutrient delivery strategies have motivated interest in nanotechnology-enabled agriculture. Here, we synthesized biodegradable polymer nanocomposites (PNCs) containing polyhydroxyalkanoate (PHA) and calcium phosphate nanoparticles (Ca–P–NPs) and assessed their efficacy as a P-delivery vehicle, compared to a conventional P source (CaHPO4), using tomato as a test plant. The effectiveness of PHA–Ca–P PNCs was assessed by measuring plant biomass, fruit yield and quality, tissue elemental and chlorophyll content, and enzymatic biomarkers. Phosphorus in the leachate was used as a surrogate for runoff. PHA–Ca–P PNCs biodegraded as a result of microbial activity in the soil, controlling the release of P during the initial stages of plant growth. PHA–Ca–P PNCs supported plant performance comparably to the conventional P source, while significantly reducing the P loss from the soil by over 80%. Given the negative consequences of eutrophication driven by P-rich agricultural runoff, this significant reduction in lost P has broad implications. Our studies also highlight the need to improve the efficiency of P uptake by plants from exogenous P sources. Collectively, these findings demonstrate the significant potential of biodegradable PNCs as a nutrient delivery platform to simultaneously enhance crop productivity and reduce the negative impacts of agriculture on the environment.

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“…Biomass packaging materials have been extensively investigated to replace synthetic plastics, because of their low cost, easy processability, non-toxicity, and biodegradability, as awareness of environmental protection and food safety has increased [1]. In recent years, commercial intelligent labels or films, such as the Timestrip ® , 3M™MonitorMark™, CheckPoint ® , and Ageless Eye ® , appear in our daily lives [2].…”

Section: Introductionmentioning

confidence: 99%

Preparation, Characterization and Application of a Low Water-Sensitive Artemisia sphaerocephala Krasch. Gum Intelligent Film Incorporated with Anionic Cellulose Nanofiber as a Reinforcing Component

Liang

Wang

2020

Polymers

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A low-water-sensitive Artemisia sphaerocephala Krasch. gum (ASKG) based intelligent film was developed. Red cabbage extracts (RCE) was selected as a natural pH-sensitive indicator, and anionic cellulose nanofiber (ACNF) was added as a hydrophobic and locking host. The zeta potential, rheology, Fourier-transform infrared spectroscopy, X-ray diffractometry, and release results indicated that the RCE was locked by the ACNF via electrostatic interactions, moreover, broke the original complicated network and ordered arrangement of polymer molecules in the developed intelligent films. RCE addition decreased the tensile strength, oxygen, and water vapor barrier properties and light transmission of the developed intelligent films, while increasing the elongation at break. The films could respond to buffer solutions and NH3 through different color changes. The developed intelligent film was hydrophobic, which could precisely detect the freshwater shrimp freshness in real time via color changes, which indicated that the films have potential in intelligent packaging and gas-sensing label fields.

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Potassium ions release from polysaccharide films

Cited by 14 publications

References 19 publications

Paper-reinforced sodium alginate/carboxyl methyl cellulose-based bio-composite films

Paper-reinforced sodium alginate/carboxyl methyl cellulose-based bio-composite films

Biodegradable Polymer Nanocomposites Provide Effective Delivery and Reduce Phosphorus Loss during Plant Growth

Preparation, Characterization and Application of a Low Water-Sensitive Artemisia sphaerocephala Krasch. Gum Intelligent Film Incorporated with Anionic Cellulose Nanofiber as a Reinforcing Component

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