Preparation of poly(acrylic acid) exfoliated clay composite by <i>in-situ</i> polymerisation for decolouration of methylene blue from wastewater

Rahman, Mohammed Mizanur; Rimu, Sunzida H.; Biswas, Samit; Rashid, Taslim Ur; Chisty, Adib H.; Rahman, Md. Ashiqur; Murad, Salauddin; Haque, Papia

doi:10.1080/03067319.2020.1813732

Cited by 8 publications

(1 citation statement)

References 37 publications

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“…Adsorption is considered to be the most convenient process among the various methods of water treatment and is commonly used to remove low concentrations of non-degradable organic compounds from wastewater and industrial effluents. Many papers have reported the use of PAA-based composites fabricated by various techniques to remove dye such as methylene blue [ 10 , 20 , 21 , 22 ] and safranine T [ 23 ]; metal ions like zinc, nickel, magnesium, copper and lead [ 24 ]. Recently, bio-based composites have been subject to increased interest due to their non-toxic properties, biodegradability and surface reactivity.…”

Section: Introductionmentioning

confidence: 99%

Interactions between Nanoclay, CTAB and Linear/Star Shaped Polymers

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Godek

Słowik

et al. 2022

IJMS

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The influence of star-shaped (PAA-SS) and linear polyacrylic acid (PAA) with different molecular weights (high—PAA-HMW and low—PAA-LMW) on the structure of the adsorption layer, adsorption amount, electrokinetic and stabilizing properties of the PAA/CTAB/nanoclay suspensions was studied. The properties of the systems containing one of these polymers, the cationic surfactant—hexadecyltrimethylammonium bromide (CTAB) and the surface-modified nanoclay (N-SM) were analyzed using the following techniques: BET, CHN, FT-IR, ED-XRF, XRD, HRTEM, UV-Vis, tensiometry and zeta potential measurements. It was proved that PAA could be used as an effective stabilizer of N-SM. Moreover, the addition of CTAB caused a significant increase in the stability of the systems but decreased the adsorption of PAA on the N-SM surface and changed the structure of the adsorption layers. The largest stability was observed in the PAA-HMW/CTAB system. The PAA polymers and PAA/CTAB complexes adsorbed, especially on the clay surface, influenced the primary distribution of the layered sheets but kept the same basal d-spacing. The adsorption of PAA and the PAA/CTAB complexes took place mainly at the plate edges and on the contact space between the sheets. The obtained results will be used for the preparation of the PAA/CTAB/nanoclay composite for water purification.

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