ultrasonic-assisted synthesis of polyacrylamide

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ultrasonic-assisted synthesis of polyacrylamide/bentonite ...

Ultrasonic-assisted synthesis of polyacrylamide/bentonite ...

Ultrasonic-assisted synthesis of polyacrylamide/bentonite hydrogel nanocomposite for the sequestration of lead and cadmium from aqueous phase: Equilibrium, kinetics and thermodynamic studies. The problems associated with heavy metal pollutants in household and industrial wastewater affect both humans and the environment.

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ultrasonic-assisted synthesis of polyacrylamide/bentonite ...

Ultrasonic-assisted synthesis of polyacrylamide/bentonite ...

In this study, the synthesis of polyacrylamide/bentonite hydrogel nanocomposite was assisted by ultrasound through successful incorporation of nanobentonite as filler and cross-linker into polyacrylamide framework. The adsorbent was characterized by FTIR

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ultrasonic assisted synthesis of cationic polyacrylamide and ...

Ultrasonic Assisted Synthesis of Cationic Polyacrylamide and ...

Abstract: In this study, an acid and alkali resistance cationic polyacrylamide flocculants (P(AM-MAPTAC)) was synthesized through copolymerization of acrylamide (AM) and methacrylamido propyl trimethyl ammonium chloride (MAPTAC) by innovative ultrasonic initiation technology.

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ultrasound-assisted synthesis of polyacrylamide-grafted ...

Ultrasound-assisted synthesis of polyacrylamide-grafted ...

Ultrasound-assisted method was used to produce polysaccharides modified with acrylamide, and it promoted shorter gra copolymerization time and higher gra ing efficiency [18].

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synthesis, characterization, and application of polyacrylami ...

Synthesis, characterization, and application of polyacrylami ...

TY - CONF AU - Xiang Li AU - Baojun Yang AU - Qianying Shou AU - Guoming Zeng AU - Pei Wu PY - 2018/02 DA - 2018/02 TI - Ultrasonic Assisted Synthesis of Cationic Polyacrylamide and Its Dewatering performance evaluation BT - Proceedings of the 2017

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ultrasound-initiated synthesis of cationic polyacrylamide fo ...

Ultrasound-initiated synthesis of cationic polyacrylamide fo ...

A polymeric adsorbent based on sodium alginate (SAG) grafted with polyacrylamide (PAM) (SAG- g-PAM) was synthesized using an ultrasound-assisted method. The addition polymerization was carried out with ammonium persulfate as the initiator, at different acrylamide (AM) concentrations.

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synthesis, characterization, and application of polyacrylami ...

Synthesis, characterization, and application of polyacrylami ...

In this study, an acid and alkali resistance cationic polyacrylamide flocculants (P(AM-MAPTAC)) was synthesized through copolymerization of acrylamide (AM) and methacrylamido propyl trimethyl ammonium chloride (MAPTAC) by innovative ultrasonic initiation technology. The structure and thermal decomposition property of the obtained polymer were observed through FTIR and TG/DSC measurements ...

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advances in ultrasound-assisted synthesis of photocatalysts ...

Advances in ultrasound-assisted synthesis of photocatalysts ...

In this study, the synthesis of polyacrylamide/bentonite hydrogel nanocomposite was assisted by ultrasound through successful incorporation of nanobentonite … Ultrason Sonochem . 2020 Jan;60:104761. doi: 10.1016/j.ultsonch.2019.104761.

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Can ultrasound help cationic polyacrylamide aqueous solution polymerization?

Conclusions In this study, a novel cationic polyacrylamide (PDA) was synthesized by ultrasound assisted aqueous solution polymerization. The assistance of ultrasound simplified the copolymerization process of PDA, including a shorter reaction time, a lower temperature and a lower initiator dosage.

How was p (am-dmdaac) synthesized by ultrasound assisted polymerization?

P (AM-DMDAAC) (PDA) was synthesized by ultrasound assisted polymerization with dimethyl diallyl ammonium chloride (DMDAAC) and acrylamide (AM) as the monomers. The reaction conditions of polymerization were investigated by single factor approach and L 16 (4 5) orthogonal array.

How was PDA synthesized by ultrasound assisted aqueous solution polymerization?

PDA was synthesized by ultrasound assisted aqueous solution polymerization of AM and DMDAAC. The proposed reaction routes for PDA are shown in Scheme 1. A predetermined mass of AM, DMDAAC and other kinds of reagents such as sodium benzoate, EDTA and urea were added into a 250 mL glass vessel with a seal cover.

Why is urea used in polyacrylamide synthesis?

Urea is widely used in the synthesis of polyacrylamide as an aid solvent, being combined with amide group to decrease the chance of cross-linking, to improve the solubility of PDA and to shorten the dissolution time. As shown in Fig. 8, the intrinsic viscosity increased with urea's concentration varying from 0.1‰ to 0.3‰ and then decreased.

What is cationic polyacrylamide (CPAM) flocculation?

Flocculation is an effective method to reduce the moisture content of sewage sludge. Cationic polyacrylamides (CPAMs) have become an advanced research hotspot in recent years, due to its economic superiority, simple synthesis and high efficiency .

What is cationic polyacrylamide sludge dewatering?

Cationic polyacrylamides (CPAMs) have become an advanced research hotspot in recent years, due to its economic superiority, simple synthesis and high efficiency . For CPAMs, both the electro-neutralization effect and adsorption bridging effect play important roles in sludge dewatering.

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