Synthesis, Characterization and Applications of Nanochitosan/Sodium Alginate/Microcrystalline Cellulose Film

Vijayalakshmi, K.; Bm, Devi; PN, SUDHA; Venkatesan, Jayachandran; Anil, Sukumaran

doi:10.4172/2157-7439.1000419

Cited by 14 publications

(3 citation statements)

References 41 publications

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“…Kristal nanokitosan diamati dengan XRD, dengan hasil derajat kristalinitas sebesar 37,7889. Hasil tersebut menunjukkan bahwa nanokitosan cenderung bersifat amorf, karena efek deformasi ikatan hydrogen pada kitosan oleh substitusi gugus hidroksil dan amino setelah dilakukan crosslink (Kumar et al, 2016). Kemudian adalah karakterisasi SEM untuk mengetahui morfologi nanokitosan.…”

Section: Hasil Dan Pembahasanunclassified

Pemanfaatan Nanokitosan Sebagai Coating Agent dalam Pembuatan Pupuk NPK Berbasis Control Release Fertilizer

Sastra,

Adiarto,

Prasetyo

et al. 2023

Eksergi

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Kitosan merupakan biopolimer yang terdiri atas monomer glukosamin serta memiliki potensi sangat besar untuk dikembangkan sebagai biomaterial. Berdasarkan karakternya, kitosan larut dalam asam lemah dan tidak larut dalam air. Pada penelitian ini, kitosan dimodifikasi menjadi ukuran nano (nanokitosan) untuk meningkatkan kapabilitasnya sebagai membran dan digunakan sebagai coating agent dalam pembuatan pupuk NPK yang berbasis Control Release Fertilizer. Sintesis nanokitosan dilakukan dengan metode gelasi ionik dengan memberikan variasi pada lama pengadukan dan konsentrasi crosslinker. Variasi lama waktu pengadukan yang diberikan adalah 5 menit, 10 menit, dan 15 menit. Crosslinker yang digunakan dalam penelitian ini adalah Sodium Tripolyphosphate (STPP) dengan variasi konsentrasi 0,2%; 0,25%; 0,3%. Dari hasil uji release yang dilakukan, didapatkan nanokitosan dengan variasi lama pengadukan 15 menit dengan konsentrasi STPP 0,3% sebagai variasi yang paling optimal dengan release paling kecil. Melalui karakterisasi PSA, didapatkan ukuran nanokitosan tersebut sebesar 202,1 nm, dengan bentuk morfologi yang berbentuk bulatan teraglomerasi pada hasil SEM. Karakterisasi XRD yang didapatkan menunjukkan bahwa partikel bersifat amorf. Sedangkan pada hasil FTIR, didapatkan perbedaan vibrasi antara kitosan dengan nanokitosan pada bagian ikatan crosslink yang terbentuk. Kata Kunci: kitosan; nanokitosan; gelasi ionik; pupuk NPK; control release fertilizer ABSTRACT: Chitosan is a biopolymer consisting of glucosamine monomers and has enormous potential to be developed as a biomaterial. Based on its characteristics, chitosan is soluble in weak acids and insoluble in water. In this study, chitosan was modified into nanosized (nanocytosan) to improve its capability as a membrane and used as a coating agent in the manufacture of NPK fertilizer based on Control Release Fertilizer. The synthesis of nanokitosan was carried out by the ionic gelation method by giving variation the stirring time and crosslinker concentration. The variations of stirring time given were 5 minutes, 10 minutes, and 15 minutes. The crosslinker used in this study was Sodium Tripolyphosphate (STPP), with concentration variations of 0.2%; 0.25%; and 0.3%. From the results of the release test conducted, nanocytosan was obtained with a variation of 15 minutes of stirring time and a concentration of 0.3% STPP as the most optimal variation with the smallest release. Through PSA characterization, the size of the nanocytosan was 202.1 nm, with an agglomerated sphere-shaped morphology in the SEM results. XRD characterization showed that the particles were amorphous. In the FTIR results, there are differences in vibrations between chitosan and nanocytosan in the crosslink bond formed.

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Section: Hasil Dan Pembahasanunclassified

Pemanfaatan Nanokitosan Sebagai Coating Agent dalam Pembuatan Pupuk NPK Berbasis Control Release Fertilizer

Sastra,

Adiarto,

Prasetyo

et al. 2023

Eksergi

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“…In the case of the biopolymers (C and A), thermal event occur at different T max values: 295 • C for C and 247 • C for A. These thermal events relate to the depolymerization and dehydration of the saccharide rings [75]. In the case of CCu, the weight loss events at~215 • C result due to the breakdown of the biopolymer framework, whereas the thermal event at~267 • C relates to bond breaking between Cu(II) species and the carbonyl group (C=O) of chitosan.…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

Sequestration of Sulfate Anions from Groundwater by Biopolymer-Metal Composite Materials

et al. 2020

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Binary (Chitosan-Cu(II), CCu) and Ternary (Chitosan-Alginate-Cu(II), CACu) composite materials were synthesized at variable composition: CCu (1:1), CACu1 (1:1:1), CACu2 (1:2:1) and CACu3 (2:1:1). Characterization was carried out via spectroscopic (FTIR, solids C-13 NMR, XPS and Raman), thermal (differential scanning calorimetry (DSC) and TGA), XRD, point of zero charge and solvent swelling techniques. The materials’ characterization confirmed the successful preparation of the polymer-based composites, along with their variable physico-chemical and adsorption properties. Sulfate anion (sodium sulfate) adsorption from aqueous solution was demonstrated using C and CACu1 at pH 6.8 and 295 K, where the monolayer adsorption capacity (Qm) values were 288.1 and 371.4 mg/g, respectively, where the Sips isotherm model provided the “best-fit” for the adsorption data. Single-point sorption study on three types of groundwater samples (wells 1, 2 and 3) with variable sulfate concentration and matrix composition in the presence of composite materials reveal that CACu3 exhibited greater uptake of sulfate (Qe = 81.5 mg/g; 11.5% removal) from Well-1 and CACu2 showed the lowest sulfate uptake (Qe of 15.7 mg/g; 0.865% removal) from Well-3. Generally, for all groundwater samples, the binary composite material (CCu) exhibited attenuated sorption and removal efficiency relative to the ternary composite materials (CACu).

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“…The ensuing structural functional group alterations were studied by ATR-FTIR spectroscopy. Figure 2 illustrates a comparison between the ATR-FTIR spectra of the irradiated samples and the spectrum of the reference sample; the major characteristic peaks of chitosan are listed in Table 3 [41][42][43]. In the ATR-FTIR spectra, the intensities of characteristic peaks at 3400, 2875, 1640, 1375, 1155, and 1092 cm -1 increased after ion irradiation.…”

Section: Attenuated Total Reflectance Fourier-transform Infrared (Atr-ftir) Spectroscopy Characterizationmentioning

confidence: 99%

Modification of Chitosan Membranes via Methane Ion Beam

et al. 2020

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Chitosan has been used for biomedical applications in recent years, primarily because of its biocompatibility. A chitosan membrane with a 30 μm thickness was prepared and investigated for its surface modification using methane ions. Methane ions were implanted into the chitosan membrane using a Kaufman ion source; bombardment was accomplished using three accelerating voltages of ion beams—30, 55, and 80 kV. The influence of the ion bombardment on morphology, crystallinity, and hydrophilicity was investigated. Attenuated total reflectance Fourier-transform infrared (ATR-FTIR) spectroscopy analysis showed that a triplet bond appeared after the implantation of methane ions (acceleration voltage: 80 kV), culminating in the creation of a more amorphous membrane structure. The analyses of atomic force microscopy (AFM) images showed that, with the increase in bombardment energy, the roughness of the surface changed. These results revealed that ion bombardment improved the hydrophilicity of the membranes and the water fluxes of chitosan membranes altered after methane ion bombardment.

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Synthesis, Characterization and Applications of Nanochitosan/Sodium Alginate/Microcrystalline Cellulose Film

Cited by 14 publications

References 41 publications

Pemanfaatan Nanokitosan Sebagai Coating Agent dalam Pembuatan Pupuk NPK Berbasis Control Release Fertilizer

Pemanfaatan Nanokitosan Sebagai Coating Agent dalam Pembuatan Pupuk NPK Berbasis Control Release Fertilizer

Sequestration of Sulfate Anions from Groundwater by Biopolymer-Metal Composite Materials

Modification of Chitosan Membranes via Methane Ion Beam

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