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    2015-6-1 · Abstract. The use of high molecular weight cationic polyacrylamide (CPAM) was investigated to accelerate the drainage of nanocellulose (Microfibrillated Cellulose) suspensions into films. The mechanism was quantified and optimized by measuring the gel point, the lowest solids concentration at which a continuous network is formed.

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    2018-9-7 · High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and …

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    2020-3-15 · Pregelatinized cationic starch was the best modified starch considering the percentage of sedimented material for both hematite and quartz at dosages 10 and 100 mg/L. Cost-effectiveness was considered when choosing 10 mg/L pregelatinized starch at pH 7 as the best result, as the results were very close to the results obtained with the 100 mg/L ...

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    2013-6-17 · divalent cationic ions (cations) such as Ca, Mg, Fe etc. and will quickly precipitate if used in hard water. Other uses for PAAc include adsorbents for disposable diapers, ion exchange resins, adhesives and as thickeners’ for pharmaceuticals, cosmetics and paints. 3.2. Polyacrylamide (PAAm) PAAm is formed from acrylamide subunits.

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    2021-6-3 · Liao, Y. et al. UV-initiated polymerization of hydrophobically associating cationic polyacrylamide modified by a surface-active monomer: A comparative study of synthesis, characterization, and ...

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    2012-7-23 · Cationic flocculantsthat bring cationic charges (+) into the medium. Different levels (percentages) of ionic chargeare available : from 0 to 100%. Several commercial forms exist and they come from differents methods of polymerization : Powders :The monomers are polymerized in a gel form. The gel obtained is then ground and dried.

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    Starch-g-polyacrylamide copolymer and its nanocomposite with Fe3O4 and graphene oxide have been successfully synthesized. The synthesized samples were characterized using FTIR, XRD, SEM, HRTEM, and VSM. The factors that affect the adsorption efficiency of samples for Ni(II) ions from aqueous solutions as pH, initial Ni(II) ions concentration, contact time and temperature have been examined.

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    2008-5-1 · The effect of SH content on MB adsorption kinetics for the SH/PAM/clay and SH/PAM hydrogels was investigated and shown in Fig. 1, Fig. 2.It is observed that in the plateau area of both figures, C A (the adsorption concentration percentage of MB/g of dry hydrogel) increases with increasing SH content, indicating that there exist strong static interactions between anionic SH and cationic MB …

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    Cationic polyacrylamide (CPAM) with a molecular weight ranging from 8 mil-lion to 18 million Da and ionization degree of 25% was obtained commercially (Shenghuang Chemical Products Co., Ltd., Liaocheng, Shandong, China).

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    2019-9-17 · Chitosan-based hydrogel has received considerable interests because of its appealing properties and applications in many areas. The primary objective of this work was to produce novel cationic chitosan-based hydrogels via polymerizing chitosan with two cationic monomers of the same structure but with different counter ions [2-(methacryloyloxy)ethyl]trimethylammonium methyl sulfate …

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    2020-11-16 · Ana V. Torres-Figueroa, Cinthia J. Pérez-Martínez, Teresa del Castillo-Castro, Enrique Bolado-Martínez, María A. G. Corella-Madueño, Alejandro M. García-Alegría, Tania E. Lara-Ceniceros, Lorena Armenta-Villegas, ' Composite Hydrogel of Poly(acrylamide) and Starch as Potential System for Controlled Release of Amoxicillin and Inhibition of Bacterial Growth ', Journal of Chemistry,. vol ...

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