Synthesis of Acid Hydrolysis Lignin-g-Poly-(Acrylic Acid) Hydrogel Superabsorbent Composites and Adsorption of Lead Ions

Sun, Yan; Ma, Yanli; Gui-zhen, Fang; Li, Shujun; Fu, Yujie

doi:10.15376/biores.11.3.5731-5742

Cited by 36 publications

(15 citation statements)

References 22 publications

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“…6 For example, lignin-based poly(acrylic acid) (PAA) hydrogels showed relatively high swelling ratios of 400, 600, and 700 g/g for acid hydrolysis lignin–PAA, alkali lignin–PAA, and lignosulfonate–PAA hydrogels, respectively. 24,25 The specific surface area of alkali lignin–PAA hydrogel was reported to be as high as 122.7 ± 4.51 m 2 /g. 24 On the other hand, hydrogels synthesized by acrylamide and poly(vinyl alcohol) with alkaline and kraft lignin had a swelling ratio of 8 and 1.5 g/g, respectively.…”

Section: Results and Discussionmentioning

confidence: 99%

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Hardwood Kraft Lignin-Based Hydrogels: Production and Performance

2018

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In this study, hydrogels were synthesized through the radical polymerization of hardwood kraft lignin, N -isopropylacrylamide, and N , N ′-methylenebisacrylamide. Statistical analyses were employed to produce lignin-based hydrogels with the highest yield and swelling capacity. The success of the polymerization reactions was confirmed by NMR and Fourier infrared spectroscopy. The lignin-based hydrogel was more thermally and rheological stable, but exhibited less swelling affinity, than synthetic hydrogel. The rheological studies indicated that the swollen hydrogels were predominantly elastic and exhibited a critical solution temperature that was between 34 and 37 °C. Compared with the synthetic hydrogel, lignin-based hydrogel behaved less elastic as temperature increased. In addition to inducing a green hydrogel, the results confirmed that hardwood lignin-based hydrogel would have different properties than synthetic-based hydrogels, which could be beneficial for some applications.

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Section: Results and Discussionmentioning

confidence: 99%

“…24 The addition of acid hydrolysis lignin was found to greatly improve the surface morphology and swelling affinity of the hydrogel. 25 Yu et al developed lignosulfonate- g -acrylic acid hydrogels by grafting acrylic acid onto lignosulfonate with MBAAm as a cross-linker and lacase/ tert -butyl hydroperoxide as the initiator. 26…”

Section: Introductionmentioning

confidence: 99%

Hardwood Kraft Lignin-Based Hydrogels: Production and Performance

2018

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“…The adsorption of Pb(II) is preferential when the absorption is analyzed in competence with other ions such as Cu(II), Cd(II) and Zn(II) [79]. Other lignin-based hydrogels for Pb(II) absorption have been also developed such as, lignosulfonate/graphene [80] or lignin/acrylic acid [81], being capable to remove 1210 mg/g and 235 mg/g of Pb(II), respectively.…”

Section: Hydrogels Fo Water Remediationmentioning

confidence: 99%

Lignin-Based Hydrogels: Synthesis and Applications

et al. 2020

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Polymers obtained from biomass are an interesting alternative to petro-based polymers due to their low cost of production, biocompatibility, and biodegradability. This is the case of lignin, which is the second most abundant biopolymer in plants. As a consequence, the exploitation of lignin for the production of new materials with improved properties is currently considered as one of the main challenging issues, especially for the paper industry. Regarding its chemical structure, lignin is a crosslinked polymer that contains many functional hydrophilic and active groups, such as hydroxyls, carbonyls and methoxyls, which provides a great potential to be employed in the synthesis of biodegradable hydrogels, materials that are recognized for their interesting applicability in biomedicine, soil and water treatment, and agriculture, among others. This work describes the main methods for the preparation of lignin-based hydrogels reported in the last years, based on the chemical and/or physical interaction with polymers widely used in hydrogels formulations. Furthermore, herein are also reviewed the current applications of lignin hydrogels as stimuli-responsive materials, flexible supercapacitors, and wearable electronics for biomedical and water remediation applications.

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“…In order to stop the reaction, the reflux was stopped, and the flask was cooled at room temperature. After 4 h, the hydrogel was formed [10]. The mechanisms used for the preparation of the LN/PAA hydrogel are presented in Figure 1.…”

Section: Preparation Of Lignin Nanoparticlesmentioning

confidence: 99%

Safranin-O Dye Removal from Aqueous Solution Using Superabsorbent Lignin Nanoparticle/Polyacrylic Acid Hydrogel

Didehban¹,

Mirshokraie²,

Azimvand³

2018

Eurasian J Anal Chem

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Alkali lignin (AL) modified by ethylene glycol and lignin nanoparticles (LN) was prepared through the acid precipitation technology. Lignin nanoparticle/polyacrylic acid (LN/PAA) hydrogel was prepared using copolymerization reactions. LN and LN/PAA hydrogel were investigated using GPC, SEM, FT-IR spectroscopy, and TGA-DTG analysis. The sizes of the nanoparticles were assessed using DLS. LN/PAA hydrogel was used to remove Safranin-O from an aqueous Solution. The optimal conditions for absorption provided at pH 7, an initial concentration of dye of 1.5 gr.L -1 , and an adsorbent dosage of 0.1 gr. Also, the optimal time for LN and LN/PAA hydrogel were 100 min and 450 min, respectively. Both absorbent LN and LN/PAA hydrogel showed good agreement with the Langmuir isotherm. The maximum absorption capacities of LN and LN/PAA hydrogel were determined to be 100 mg.gr -1 and 1666.6 mg.gr -1 , respectively. Both absorbent LN and LN/PAA hydrogel follow the pseudo-second kinetic model and the intraparticle diffusion model.

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Synthesis of Acid Hydrolysis Lignin-g-Poly-(Acrylic Acid) Hydrogel Superabsorbent Composites and Adsorption of Lead Ions

Cited by 36 publications

References 22 publications

Hardwood Kraft Lignin-Based Hydrogels: Production and Performance

Hardwood Kraft Lignin-Based Hydrogels: Production and Performance

Lignin-Based Hydrogels: Synthesis and Applications

Safranin-O Dye Removal from Aqueous Solution Using Superabsorbent Lignin Nanoparticle/Polyacrylic Acid Hydrogel

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