Preparation of poly (acrylic acid) microgels by alcohol type cross-linkers and a comparison with other cross-linking methods

Kohestanian, Mohammad; Bouhendi, H.; Keshavarzi, Nahid; Mahmoudi, Masoud; Pourjavadi, Ali; Ghiass, Majid

doi:10.1007/s00289-021-03878-5

Cited by 5 publications

(3 citation statements)

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“…18 The identical carboxylate bands in these spectra show that the carboxylate groups are unaffected by casting the electrode in PG and therefore are not involved in cross-linking, which would tend to shift these peaks to higher wavenumbers. 19 Differences in the spectra were detected at wavenumbers below 1150 cm −1 as additional small peaks in the NaPAA binder cast from PG solution. These small peaks correspond to known vibrations of PG, 20 and are consistent with the small amount of residual PG in the binder as detected by TGA.…”

Section: Resultsmentioning

confidence: 97%

“…4b and are nearly identical. In both spectra, the wide band between 3700-3000 cm −1 corresponds to stretching vibrations of hydroxyl groups from water and hydrogen bonding, 18,19 the band near 2900 cm −1 corresponds to C-H stretching vibrations, 18,19 while the bands near 1561, 1458, and 1401 cm −1 correspond to asymmetric and symmetric vibrations of carboxylate groups. 18 The identical carboxylate bands in these spectra show that the carboxylate groups are unaffected by casting the electrode in PG and therefore are not involved in cross-linking, which would tend to shift these peaks to higher wavenumbers.…”

Section: Resultsmentioning

confidence: 99%

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Deconvoluting Slurry Rheology from Binder Performance in Si-Based Anodes

Jiang,

Wei,

Yasmin

et al. 2023

J. Electrochem. Soc.

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A systematic investigation was undertaken on the effect of sodium poly(acrylic acid) (NaPAA) binder molecular weight on silicon monoxide cycling performance. It was found that cycling performance was poor for low molecular weight binder, however this was primarily related to poor slurry rheology. We found that if propylene glycol is used instead of water as a slurry solvent, it can take over the role of viscosity modifier from the binder. When propylene glycol is used as a solvent for slurries with low MW NaPAA binders (e.g. 1.5 k NaPAA), the cycling outperformance of the resulting SiO electrodes outperforms conventionally made SiO electrodes with high molecular weight binder (e.g. 250 k NaPAA). These results show that binder molecular weight only affects the cycling performance of Si-alloy based electrodes because of its role as a slurry viscosity modifier. If propylene glycol is used to increase slurry viscosity, then the molecular weight has little effect.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Deconvoluting Slurry Rheology from Binder Performance in Si-Based Anodes

Jiang,

Wei,

Yasmin

et al. 2023

J. Electrochem. Soc.

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“…CS showed characteristic peaks at 3261 cm −1 related to O–H and at 1682 cm −1 related to C = O (amide). The peaks at 2928 and 1200 cm −1 were assigned for C–H and C-O bond stretching in PAA, respectively ( Kohestanian et al, 2022 ). For CS-PAA nanoparticles, a new absorption peak emerged at 1628 cm −1 related to the –NH 3 + absorption of CS.…”

Section: Resultsmentioning

confidence: 99%