Amine-terminated dendritic polymers as a multifunctional chelating agent for heavy metal ion removals

Mohseni, M.; Akbari, Somaye; Pajootan, Elmira; Mazaheri, Firuzmehr

doi:10.1007/s11356-019-04765-3

Cited by 25 publications

(10 citation statements)

References 54 publications

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“…As it has shown in Fig. 5 (C), a new peak illustrated by No.4 confirm the reaction of amine group of PAMAM and hydroxyl group of lignin at 1485 cm -1 [59]. Moreover, there are characteristic peaks of lignin in Fig.…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)supporting

confidence: 57%

Fabrication and Characterization of Lignin/Dendrimer Electrospun Blended Fiber Mats

Akbari¹,

Bahi²,

Farahani³

et al. 2020

Preprint

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Blending lignin as the second most abundant polymer in nature with nanostructured compounds such as dendritic polymers will not only add value to lignin, but also increase its application in various fields. In this study, softwood Kraft lignin/polyamidoamine dendritic polymer (PAMAM) blends were fabricated by solution electrospinning method to produce bead-free nanofiber mats. The mats were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR), zeta potential, and thermogravimetry analysis (TGA). The chemical intermolecular interactions between lignin functional groups and abundant amino groups in PAMAM were investigated by FTIR and viscosity measurement. These interactions enhanced the mechanical and thermal characteristics of lignin/PAMAM mats, providing further potential applications at industry level.

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Section: Fourier Transform Infrared Spectroscopy (Ftir)supporting

confidence: 57%

Fabrication and Characterization of Lignin/Dendrimer Electrospun Blended Fiber Mats

Akbari¹,

Bahi²,

Farahani³

et al. 2020

Preprint

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“…These absorptions appeared at 1630-1680 cm −1 in the FTIR spectroscopy of lignin/PAMAM (Figure 6) providing a proof for the effective reaction between lignin and PAMAM. Also shown in Figure 6b,c), a new peak appearing at 1655 and 1705 cm −1 could further confirm the reaction of amine group of PAMAM and hydroxyl group of lignin [66].…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)supporting

confidence: 57%

Fabrication and Characterization of Lignin/Dendrimer Electrospun Blended Fiber Mats

et al. 2021

Self Cite

View full text Add to dashboard Cite

Blending lignin as the second most abundant polymer in Nature with nanostructured compounds such as dendritic polymers can not only add value to lignin, but also increase its application in various fields. In this study, softwood Kraft lignin/polyamidoamine dendritic polymer (PAMAM) blends were fabricated by the solution electrospinning to produce bead-free nanofiber mats for the first time. The mats were characterized through scanning electron microscopy, Fourier transform infrared (FTIR) spectroscopy, zeta potential, and thermogravimetry analyses. The chemical intermolecular interactions between the lignin functional groups and abundant amino groups in the PAMAM were verified by FTIR and viscosity measurements. These interactions proved to enhance the mechanical and thermal characteristics of the lignin/PAMAM mats, suggesting their potential applications e.g. in membranes, filtration, controlled release drug delivery, among others.

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“…and 7.3-7.8 ppm (in CHCl 3 ). Recently, the 1 H chemical shifts for the H-N and CH 3 O groups of a polyamidoamine compound was observed [26] in 8.03 ppm and 3.45 ppm, respectively. In this work, we have reported these chemical shifts in 8.52 ppm (H17) and 3.38 (H38-H40)-3.47 (H42-H44) ppm, whereas they have been calculated in 7.5 and the range of 2.9-3.8 ppm (CHCl 3 ).…”

Section: Nmr Analysismentioning

confidence: 99%

New route for synthesis of 2-(2,2-dimethoxyethyl)-1,2,3,4,5,6-hexahydro-1,5-methanoazocino[4,3-b]indole and DFT investigation

Uludag

Serdaroğlu

2020

Heliyon

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Development of efficient sequences for the synthesis of the title compound (2-(2,2-dimethoxyethyl)-1,2, 3,4,5,6hexahydro-1,5-methanoazocino[4,3-b]indole) (7) was described. The title compound was synthesized through several steps starting from phenylhydrazine hydrochloride and dimethyl (R)-2-(3-oxocyclohexyl)malonate. In this route, all synthesized compounds were observed by spectroscopic tools (FT-IR, NMR): 3,4,5,6,7-hexahydro-1H-1,5-methanoazocino[4,3-b]indole (7). The central step in these syntheses is the dehydrogenative reaction, which constructs the tetracyclic ring system from a much simpler tetracyclic precursor. The six-stable conformers of the compound (7) were used for further calculations such as FT-IR, NMR, NLO, and FMO analyses, performed at the B3LYP/6-311þþG(d,p) level. This work revealed that (7) can be a good material to use in the non-linear optical material because its β tensor is greater ten times than that of the urea.

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Amine-terminated dendritic polymers as a multifunctional chelating agent for heavy metal ion removals

Cited by 25 publications

References 54 publications

Fabrication and Characterization of Lignin/Dendrimer Electrospun Blended Fiber Mats

Fabrication and Characterization of Lignin/Dendrimer Electrospun Blended Fiber Mats

Fabrication and Characterization of Lignin/Dendrimer Electrospun Blended Fiber Mats

New route for synthesis of 2-(2,2-dimethoxyethyl)-1,2,3,4,5,6-hexahydro-1,5-methanoazocino[4,3-b]indole and DFT investigation

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