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Preparation of novel amphoteric polyacrylamide and its synergistic retention with cationic polymers. E-POLYMERS 2020. [DOI: 10.1515/epoly-2020-0026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractA novel amphoteric polyacrylamide (PDAA) was prepared by inverse emulsion
polymerization. The influence of its cationic degree and molecular weight on
retention property was discussed. Then, the chemical structure and micromorphology of
the obtained PDAA were characterized by Fourier infrared spectrum (FTIR), NMR
hydrogen spectrum (1H NMR), gel permeation chromatography (GPC), and
scanning electron microscope (SEM). Finally, the synergistic retention effects of
polydimethyldiallylammonium chloride (PDADMAC), cationic starch (CS), cationic guar
gum (CHPG), cationic chitosan (CTS), and polyamine (PA) on the novel PDAA were
investigated. The results showed that the optimum cationic degree and molecular
weight of PDAA were 25% and 4 million, respectively. The chemical structure of PDAA
was confirmed by FTIR, 1H NMR, and GPC. SEM showed that the particle size
of PDAA was between 150 and 600 nm, and the particles were very stable because
no broken particles were found. In addition, most of the five cationic polymers have
good synergistic retention effect on PDAA, and the order of synergistic effect was
PDAA/PDADMAC > PDAA/CTS > PDAA/CS > PDAA/CHPG >
PDAA/PA.
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2
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Wang A, Yuan Z, Wang C, Luo L, Zhang W, Geng S, Qu J, Wei B, Wen Y. Zwitterionic Cellulose Nanofibrils with High Salt Sensitivity and Tolerance. Biomacromolecules 2020; 21:1471-1479. [PMID: 32069405 DOI: 10.1021/acs.biomac.0c00035] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
To improve the salt tolerance/sensitivity of cellulose nanofibrils (CNFs), zwitterionic cellulose nanofibrils (ZCNFs) were prepared from softwood bleached kraft pulp fibers via a sequential process of anionic modification with 2,2,6,6-tetramethylepiperidin-1-oxyl (TEMPO)-mediated oxidation, cationic modification with (2,3-epoxypropyl) trimethylammonium chloride (EPTMAC), and high-pressure homogenization. To produce ZCNFs with different contents of cation group, EPTMAC loadings of 0.15 to 1.15 g/g fiber were explored during cationization. The obtained ZCNFs were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectra (XPS), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), and rheological measurements. The salt tolerance of the ZCNFs was investigated by adding mixed salts into the ZCNF dispersions. The results demonstrated that the ZCNFs with both anionic and cationic charges were produced. Compared with the TEMPO-mediated oxidized cellulose nanofibrils (TOCNFs), the ZCNFs exhibited an excellent "salt-thickening" behavior under the studied salt concentrations (2-24% w/w). Moreover, increasing the content of the cation group increased the salt tolerance/sensitivity of ZCNFs. This work demonstrated that introducing cationic charges to the anionic charged TOCNFs imparts the produced ZCNFs with excellent salt sensitivity and tolerance, which could expand the application of nanocellulose in oil recovery or wastewater treatment.
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Affiliation(s)
- An Wang
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
| | - Zhaoyang Yuan
- Department of Biochemistry & Molecular Biology, Michigan State University, 603 Wilson Road, East Lansing, Michigan 48824, United States
| | - Chunping Wang
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
| | - Langman Luo
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
| | - Weifeng Zhang
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
| | - Shao Geng
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
| | - Jialei Qu
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
| | - Bing Wei
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan China
| | - Yangbing Wen
- Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, No. 29, 13th Avenue, Tianjin Economic and Technological Development Area, Tianjin 300457, China
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Wang L, Li D, Sun J, Zhang Y. Preparation and Characterization of Amphoteric Poly(acrylamide-itaconic acid-diallyl dimethyl ammonium chloride) Uniform Spherical Particles by Aqueous Dispersion Polymerization. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2015. [DOI: 10.1080/10601325.2015.1039323] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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4
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Lü T, Liu X, Qi D, Zhao H. Effect of hydrophobic monomer on the aqueous dispersion polymerization of acrylamide with quaternary ammonium cationic monomer. IRANIAN POLYMER JOURNAL 2015. [DOI: 10.1007/s13726-015-0314-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ran Q, Huang Z, Shu X, Yang Y, Zhang Z. A novel and controllable route for preparing high solid-content and low-viscosity poly(acrylamide-co-acrylic acid) aqueous latex dispersions. RSC Adv 2015. [DOI: 10.1039/c5ra07410j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
High solid-content and low-viscosity poly(acrylamide-co-acrylic acid) aqueous latex dispersions were obtained through a novel strategy, which involves swelling followed by diffusion and redox initialized polymerization inside the seed particle.
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Affiliation(s)
- Qianping Ran
- State Key Laboratory of High Performance Civil Engineering Materials
- Jiangsu Research Institute of Building Science
- Nanjing 210008
- China
| | - Zhen Huang
- Jiangsu Sobute New Materials Co. Ltd
- Nanjing 211103
- China
| | - Xin Shu
- Jiangsu Sobute New Materials Co. Ltd
- Nanjing 211103
- China
| | - Yong Yang
- Jiangsu Sobute New Materials Co. Ltd
- Nanjing 211103
- China
| | - Zhiyong Zhang
- Jiangsu Sobute New Materials Co. Ltd
- Nanjing 211103
- China
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Lü T, Qi D, Zhao H, Cheng Y. Synthesis of hydrophobically modified flocculant by aqueous dispersion polymerization and its application in oily wastewater treatment. POLYM ENG SCI 2014. [DOI: 10.1002/pen.23856] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ting Lü
- College of Materials and Environmental Engineering; Hangzhou Dianzi University; 310018 Hangzhou China
| | - Dongming Qi
- College of Materials and Textiles, Zhejiang Sci-Tech University; 310018 Hangzhou China
| | - Hongting Zhao
- College of Materials and Environmental Engineering; Hangzhou Dianzi University; 310018 Hangzhou China
| | - Yuhua Cheng
- Electronic and Information College, Hangzhou Dianzi University; 310018 Hangzhou China
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