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Characterisation of carboxymethyl cellulose and polyacrylamide graft copolymer
The synthesis of carboxymethyl cellulose-g-polyacrylamide was carried out by a ceric ion induced solution polymerization technique. By varying the amount of catalyst and monomer, six different grades of graft copolymers were synthesized. These
LAYER STRUCTURES FORMED BY SILICA NANOPARTICLES AND CELLULOSE NANOFIBRILS WITH CATIONIC POLYACRYLAMIDE (C-PAM) ON CELLULOSE SURFACE AND THEIR
Cationic polyacrylamide, C-PAM, (Kemira Chemicals Oy, Finland) with molecular weight (Mw) of 1.4 million g/mol and charge density (CD) of 1.8 meq/g (17 mol-%) was used (Salmi et al. 2007a). C-PAM was ultra-filtrated with different cut-offs to
US5990216A – Method for manufacturing grafted polyacrylamide flocculant of cationic/ampholytic ions
The present invention discloses a process for manufacturing a grafted polyacrylamide flocculant of cationic/ampholytic ions, which is characterized by graft-copolymerizing starch or micro-crystalline cellulose as backbone with acrylamide, while
Glyoxalated Polyacrylamides G-PAM: additives for enhancing the strength of paper. Giovanna Pellegrini RQ, Axchem® Italia -Stéphan Lafrenière
1/10/2015 · The retention system is provided by Axchem® and it consists of a cationic polyacrylamide powder AXFLOC®AF-904 PG. The next figure shows the average results (based on six rolls tested) before and after the switching between the two G-PAM resins.
Effect of hydrolysis degree of hydrolyzed polyacrylamide grafted carboxymethyl cellulose on dye removal efficiency
27/7/2013 · In this present work, a series of hydrolyzed polyacrylamide grafted carboxymethyl cellulose (CMC-g-HPAM) was prepared. The structure and solution properties of CMC-g-HPAM were characterized by FTIR, 1H-NMR, elemental analysis and zeta potential
The cellulase of Trichoderma viride. Purification, characterization and comparison of all detectable endoglucanases, exoglucanases
Molecular masses were determined by polyacrylamide gel electrophoresis. One group of endoglucanases (Endo I, Endo II and Endo IV) with Mr of 50 000, 45 000 and 23 500 were more random in their attack on carboxymethylcellulose than another group
Cationization of Eucalyptus wood waste pulps with diverse lignin contents for potential application in colored wastewater – RSC Publishing Home
cellulose modi cation can be identi ed.3 The rst one is based on a direct cellulose modi cation by (i) dissolution of short chain cellulose molecules in aqueous solutions of e.g. NaOH/ urea, NaOH/thiourea or LiOH/urea, which are pre-cooled to
One-step green synthesis of non-hazardous dicarboxyl cellulose flocculant and its flocculation activity evaluation.
15/10/2015 · One-step green synthesis of non-hazardous dicarboxyl cellulose flocculant and its flocculation activity evaluation. Zhu H(1), Zhang Y(1), Yang X(1), Liu H(1), Shao L(2), Zhang X(1), Yao J(3). Author information: (1)The Key Laboratory of Advanced
Preparation, Characterization, and Cationic Functionalization of Cellulose-Based Aerogels for Wastewater Clarification
Aerogels are a series of materials with porous structure and light weight which can be applied to many industrial divisions as insulators, sensors, absorbents, and cushions. In this study, cellulose-based aerogels (aerocelluloses) were prepared
Novel calcium carbonate filler for cellulose industry
Precipitated calcium carbonate (PCC) filler is used in many industrial products like constructions, plastics, pharmaceutics, etc. In this study producing cationic precipitated cal
PROOFS Cationic cellulosic derivatives as flocculants in papermaking
67 cationic derivatives from the most abundant and 68 available of all polysaccharides, cellulose, remains 69 scarce. Althoughtheyare soldas cosmeticingredients 70 (Kozubal et al. 2014 ), their potential in the paper 71 industry is being missed.
Carboxymethyl cellulose/polyacrylamide composite hydrogel for cascaded treatment/reuse of heavy metal ions in wastewater
15/2/2019 · A new bio-based bilateral hydrogel containing carboxymethyl cellulose (CMC) and polyacrylamide (PAM) was prepared for the wastewater remediation. The obtained CMC/PAM composite hydrogel reveals a strong single-ion affinity for copper (Cu II),
Synthesis and Application of Polyacrylamide Grafted Magnetic Cellulose Flocculant for Palm Oil Wastewater Treatment
Cellulose, as the most abundant natural bioresources, has great potential for the removal of various pollutants due to its marvelous properties of biodegradability,nontoxicity, cheap and widely
Method for manufacturing grafted polyacrylamide flocculant of cationic/ampholytic ions – Guangzhou Institute of Environmental Protection Sciences
The present invention discloses a process for manufacturing a grafted polyacrylamide flocculant of cationic/ampholytic ions, which is characterized by graft-copolymerizing starch or micro-crystalline cellulose as backbone with acrylamide, while
Effect of nanoparticles size and polyelectrolyte on nanoparticles aggregation in a cellulose fibrous matrix — Monash University
Here, we aim at evaluating how a polyelectrolyte (Cationic Polyacrylamide; CPAM, molecular weight: 13 MDa, charge: 50%, Radius of gyration: 30–36 nm) adsorbs and re-conforms onto the surface of silica(SiO2) NPs differing in diameter (8, 22 and
TEMPO/NaBr/NaClO-mediated surface oxidation of nanocrystalline cellulose and its microparticulate retention system with cationic polyacrylamide
Full Article TEMPO/NaBr/NaClO-Mediated Surface Oxidation of Nanocrystalline Cellulose and Its Microparticulate Retention System with Cationic Polyacrylamide Qing H. Xu, a,b, * Wei G. Li, a Zheng L. Cheng, a Gao Yang, a,d and Meng H. Qin c,d, *
Cationic and anionic cellulose nanocrystalline (CNC) hydrogels: A rheological study: Physics of Fluids: Vol 33, No 4
8/4/2021 · Although the rheology of cellulose nanocrystalline (CNC) suspensions has been widely studied, less attention has been paid to the modified cellulose nanocrystals such as cationic and anionic cellulose hydrogels. In this work, the rheological
What is Polyacrylamide|PAM FAQ
The abbreviation of polyacrylamide is PAM, it is a chemical which purchased in dry, emulsion, liquid and tablet form. Polyacrylamide can be carbonated into black powder at 210οC without oxygen. Polyacrylamide could be made to four series,e.g., n
SEED COATINGS, COATING COMPOSITIONS AND METHODS FOR USE – Rhodia Operations
17/4/2018 · CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of pending application Ser. No. 13/407,119, filed Feb. 28, 2012, which in turn claimed the benefit of Provisional Application Ser. No. 61/464,117, filed Feb. 28, 2011,
BioRes 12.2.3413: SU Cationic Anionic Dyes Cellulose | BioRes
Wang et al. (2016) synthesized polyacrylamide grafted quaternized cellulose by an inverse emulsion method, and the product was able to adsorb Eriochrome blue SE and Congo red dyes at the level of 349 mg·g-1 and 380 mg·g-1, respectively.
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