Advances in chitosan-based superabsorbent hydrogels

Cheng, Baoxiao; Pei, Boying; Wang, Zhengke; Hu, Qiaoling

doi:10.1039/c7ra07104c

Cited by 119 publications

(62 citation statements)

References 108 publications

(137 reference statements)

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“…Literature shows us that various studies have been directed towards the grafting of some vinyl monomers onto chitosan. [17][18][19][20][21][22] Furthermore, in radical graft copolymerization the grafting reaction of synthetic polymers onto chitosan can be initiated by radiation, [11] chemical and enzymatic methods. [23] Radiation grafting is a way to modify the polymer surfaces by covalent binding of various monomers bearing functional groups.…”

Section: Introductionmentioning

confidence: 99%

Design of Porous Microparticles Based on Chitosan and Methacrylic Monomers

Vasiliu¹,

Lungan²,

Gugoasa

et al. 2019

ChemistrySelect

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Starting from glycidyl methacrylate, three dimethacrylic monomers (mono, di and triethylene glycol dimethacrylate) and chitosan, various types of porous microparticles were obtained by suspension polymerization technique. Also, using the same technique the un‐grafted porous microparticles were obtained by reaction between glycidyl methacrylate and dimethacrylic monomers. The successful grafting reaction of chitosan onto synthetic polymer networks was highlighted by FTIR spectroscopy, scanning electron microscopy, atomic force microscopy and thermogravimetric analysis. The dimensional analysis of all type of microparticles was performed by laser diffraction while the specific surface areas were determined by means of dynamic vapor sorption. Grafting of polysaccharide onto crosslinked networks has led to the preparation of polymeric materials with high specific surface area (50‐160 m2/g) and better swelling capacities (101‐106%) compared to microparticles based on glycidyl methacrylate and dimethacrylic monomers [(31‐69 m2/g) and (39‐57%), respectively]. Furthermore, the sorption properties of grafted and un‐grafted microparticles were tested using Cu(II) solution. The highest retention capacity value of Cu(II) (41.7 mg/g) was obtained when the C1 microparticles were used in the adsorption studies.

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Section: Introductionmentioning

confidence: 99%

Design of Porous Microparticles Based on Chitosan and Methacrylic Monomers

Vasiliu¹,

Lungan²,

Gugoasa

et al. 2019

ChemistrySelect

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“…Pengembangan HSA dengan bahan dasar pembentuknya bersifat multi komponen khususnya pemakaian polimer alami ramah lingkungan merupakan subjek penting pada segi komersialisasi dan kenyamanan terhadap lingkungan [12,13]. Oleh karena itu, perlu dilakukan modifikasi HSA berbasis asam akrilat sebagai bahan dasar superabsorben yang ramah terhadap lingkungan yaitu menggabungkannya dengan polimer alami yang mudah terdegradasi seperti gelatin.…”

Section: Pendahuluanunclassified

Kopolimerisasi Cangkok Poli(kaliumakrilat)- Gelatin Hasil Iradiasi Gamma

Erizal

Sudirman²,

Hariyanti

et al. 2018

jsmi

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KOPOLIMERISASI CANGKOK POLI(KALIUMAKRILAT)-GELATIN HASIL IRADIASI GAMMA. Hidrogel Super Absorben (HSA) merupakan polimer yang dapat menyerap air dalam jumlah yang relatif besar (± 1000 kali berat kering) dan salah satu baku penting khususnya untuk popok bayi/dewasa. Satu seri HSA dibuat dari asam akrilat yang telah dinetralkan sebagian dengan KOH, lalu dicangkokan (grafting) dengan gelatin pada konsentrasi 1% hingga 4 %(b/v,%) dan diiradiasi menggunakan sinar gamma pada dosis tunggal 10 kGy (laju dosis 2,5 kGy/jam). Terjadi cangkok gelatin pada polimer diukur menggunakan Fourier Transform Infra Red (FT-IR) dan morfologi diobservasi menggunakan Scanning Electron Microscope (SEM). Fraksi gel dan kemampuan hidrogel dalam mempertahankan air yang diserap (rasio swelling) dan Equilibrium Degree of Swelling (EDS) hidrogel ditentukan dengan metode gravimetri. Hasil evaluasi menggunakan SEM, morfologi permukaan HSA hasil iradiasi menunjukkan terjadi cangkok polimer (kalium akrilat) pada molekul gelatin dan hasil pengukuran spektrum FT-IR menunjukkan gugus karboksilat (COOH) yang bereaksi dengan gelatin. Meningkatnya konsentrasi gelatin hingga 4 %, rasio swelling, fraksi dan EDS hidrogel juga mengalami peningkatan. Hidrogel HSA poli (kalium akrilat-g-gelatin dapat dipertimbangkan sebagai bahan material kandidat biodegradable hidrogel untuk aplikasi di biang kesehatan/farmasi.

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“…However, in contrast to such compact solid materials, the hydrophobic surface of CPEs may markedly enhance the entrapment of some lipophilic (bio)modifiers. Alternative functionalization process to the listed in Section 2.1 have been developed, as for example the impregnation process, which is based on soaking the electrode surface in a solution containing the dissolved (bio)modifier (usually yielding to a self-assembled monolayer) [56], or the electrodeposition [57].…”

Section: Chemical Immobilization On Surfacementioning

confidence: 99%

Customized Bio‐functionalization of Nanocomposite Carbon Paste Electrodes for Electrochemical Sensing: A Mini Review

Muñoz

Baeza

2017

Electroanalysis

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Over the past few decades, the (bio)functionalization of carbon nanomaterials (CNMs), such as nanohorns, carbon nanotubes, graphene, graphite and related with a wide range of (bio)modifiers have been extensively studied for their incorporation on different pure metal or carbon electrode surfaces via drop‐casting. However, CNMs are also shown to be important functional additives for polymers, having great potential to produce rigid nanocomposite materials with a range of enhanced properties, including mechanical, optical, electrical, thermal and electrochemical. The high malleability derived from the host polymer allows alternative strategies that can be carried out in order to incorporate different types of (bio)modifiers in/on/into a polymeric nanocomposite electrode. Accordingly, this mini review overviews the main methodologies used for the bio‐functionalization of electrochemical transducers based on nanocomposite carbon paste electrodes (NC‐CPEs). Additionally, the most extensively (bio)modifiers used in electrochemical (bio)sensing, together with their various electrocatalytical performance are also discussed, fact that might serve as a general outlook for planning further research.

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Advances in chitosan-based superabsorbent hydrogels

Abstract: Superabsorbent hydrogels (SHs) have been used in many fields in recent years.

Cited by 119 publications

References 108 publications

Design of Porous Microparticles Based on Chitosan and Methacrylic Monomers

Design of Porous Microparticles Based on Chitosan and Methacrylic Monomers

Kopolimerisasi Cangkok Poli(kaliumakrilat)- Gelatin Hasil Iradiasi Gamma

Customized Bio‐functionalization of Nanocomposite Carbon Paste Electrodes for Electrochemical Sensing: A Mini Review

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