Crosslinking Parameter on the Preparation of Cellulose Based Hydrogel with Divynilsulfone

Astrini, Nuri; Anah, Lik; Haryono, Agus

doi:10.1016/j.proche.2012.06.038

Cited by 33 publications

(20 citation statements)

References 17 publications

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“…The crosslinked degree was increased by the increase in absorbed E-beam dose. In general, cross-linked bonds in polymers increase the degree of the char yield [28][29][30]. Therefore, the char yield of the cellulose fibers increased with the amount of cross-linked bonds in the cellulose fibers.…”

Section: Chemical Bond Structures Of the Cellulose Fibers By E-beam Smentioning

confidence: 97%

Cellulose-based carbon fibers prepared using electron-beam stabilization

Kim¹,

Park²,

Lee

2016

Carbon letters

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Cellulose fibers were stabilized by treatment with an electron-beam (E-beam). The properties of the stabilized fibers were analyzed by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and thermogravimetric analysis. The E-beam-stabilized cellulose fibers were carbonized in N 2 gas at 800°C for 1 h, and their carbonization yields were measured. The structure of the cellulose fibers was determined to have changed to hemicellulose and cross-linked cellulose as a result of the E-beam stabilization. The hemicellulose decreased the initial decomposition temperature, and the cross-linked bonds increased the carbonization yield of the cellulose fibers. Increasing the absorbed E-beam dose to 1500 kGy increased the carbonization yield of the cellulose-based carbon fiber by 27.5% upon exposure compared to untreated cellulose fibers.

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Section: Chemical Bond Structures Of the Cellulose Fibers By E-beam Smentioning

confidence: 97%

Cellulose-based carbon fibers prepared using electron-beam stabilization

Kim¹,

Park²,

Lee

2016

Carbon letters

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“…With regard to cellulose-based hydrogels, the high number of cellulose derivatives and crosslinking protocols currently available for their synthesis (as discussed in the first part of this chapter) make it difficult to draw general or conclusive remarks on their thermal behavior. Therefore, in the following the thermal stability of cellulosebased hydrogels is briefly discussed with reference to specific examples reported in the literature [97,98], where blends of CMCNa and HEC, used as hydrogel precursors, have been shown to exhibit higher or lower thermal stability in the crosslinked state compared to the native one, depending on the crosslinking protocol used.…”

Section: Thermal Stabilitymentioning

confidence: 99%

“…As discussed in the previous sections, CMCNa and HEC are widely employed for the synthesis of superabsorbent hydrogels [87,[97][98][99][100]. In particular, CMCNa is the polyelectrolyte species that provides the hydrogels with enhanced swelling capability and sensitivity to environmental stimuli (i.e., ionic strength and pH), thanks to the Donnan effect.…”

Section: Tga Analysis Of Hydrogel Precursors: Cmcna and Hecmentioning

confidence: 99%

“…HEC is adopted to promote the formation of intermolecular rather than intramolecular crosslinks, thus allowing the macromolecules to stabilize into a three-dimensional polymer network [87]. The synthesis of superabsorbent hydrogels, with sorption capabilities up to 500 times the dry weight, is commonly reported for CMCNa/HEC weight ratios of 2/1 and 3/1 (i.e., when an excess of polyelectrolyte CMCNa is used) [87,97].…”

Section: Tga Analysis Of Hydrogel Precursors: Cmcna and Hecmentioning

confidence: 99%

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Investigating the Structure-Related Properties of Cellulose-Based Superabsorbent Hydrogels

Demitri¹,

Madaghiele²,

Raucci³

et al. 2019

Hydrogels - Smart Materials for Biomedical Applications

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Superabsorbent hydrogels are macromolecular networks able to absorb and retain large amounts of water solutions within their fine mesh-like structure. More importantly, they are capable of multiple swelling/shrinking transitions in response to specific environmental cues (e.g., pH, ionic strength, temperature, presence of given electrolytes), thus exhibiting a stimuli-sensitive behavior, which makes them appealing for the design of smart devices in a number of technological fields. In particular, in the last two decades, cellulose-based superabsorbent hydrogels have proven to be an environmentally friendly and cost-effective alternative to acrylamide-based products. This chapter reviews the relationship between the molecular structure of cellulose-based hydrogels and their physicochemical properties. First, the network formation through the use of different cellulose derivatives and chemical or physical crosslinking agents is presented. Successively, the smart swelling capability of the hydrogels as a function of composition and structure is thoroughly discussed. Finally, several approaches to the hydrogel characterization are reviewed, with focus on the assessment of key mechanical, thermal and morphological properties.

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“…Therefore researchers try to find in order alternatives to enhance the dispersion, one of them in using gel system. Three dimensional networks is called hydrogel, has main properties which is able to absorb and retain large volume of water [9]. Hydrogel can be manipulated to be responsive to environmental changes such as, pH, temperature and ionic strength [10].…”

Section: Introductionmentioning

confidence: 99%

Nata de coco (NDC) hydrogel as nanoreactors for preparation iron nanoparticles (FeNps) from ferrocenium reduction

Andarini

Lazim

2014

AIP Conference Proceedings

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Abstract. This study focuses on hydrogel as nano template to produce iron nanoparticles (FeNps). Radical polymerization was used to synthesize the hydrogel from nata de coco (NDC-g-PAA). Ferrocenium (FcCL) with 1 x 10 -4 g/ml has successfully incorporated with NDC-g-PAA hydrogel system and reduce using sodium hydroxide (NaOH) at different concentrations. Transmission electron microscopy (TEM) result demonstrates that the size of FeNps produced was about 5 -20 nm. Morphological analysis of hydrogel is carried out by scanning electron microscopy (SEM), SEM-EDEX is used to determine percentage of iron (Fe) in hydrogel. The results offer a wide range of application in various areas, especially the use of hydrogel system as a responsive template.

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Crosslinking Parameter on the Preparation of Cellulose Based Hydrogel with Divynilsulfone

Cited by 33 publications

References 17 publications

Cellulose-based carbon fibers prepared using electron-beam stabilization

Cellulose-based carbon fibers prepared using electron-beam stabilization

Investigating the Structure-Related Properties of Cellulose-Based Superabsorbent Hydrogels

Nata de coco (NDC) hydrogel as nanoreactors for preparation iron nanoparticles (FeNps) from ferrocenium reduction

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