Degradation of Polyacrylamide and Its Derivatives
General features of degradation of polyacrylamide and its anionic and cationic derivatives under the action of radical degradative agents are considered. The molecular weight of these polymers can be...
The dilute polyacrylamide solution became highly elastic in the presence of either the nonionic surfactant on the associative thickener. A threestage model was proposed to describe the surfactant/thickener/polymer interactions.
Quantitative characterization of polyacrylamide–shale
The anionic polyacrylamide concentration was 0.1–0.2 wt%, such that the concentration is well above C* (critical overlap concentration) and below C** (critical entanglement concentration). The concentration of shale was kept constant at 0.5 lb/bbl, and the concentration of anionic polyacrylamide was varied from 0.1 to 0.2 wt%.
Anionic polyacrylamide dispersions were prepared by dispersion polymerization in an aqueous salt medium, using acrylamide(AM) and acrylic acid(AA) as monomers and anionic polyelectrolytes as stabilizer. Effects of salt concentration, and molecular weight and concentration of stabilizers on the stability of the dispersions were investigated using a HAAKE rheometer and optical microscopy.
Depressing effect of hydroxamic polyacrylamide on pyrite
The performance of hydroxamic polyacrylamide (HPAM) in mineral flotation was tested on the samples of calcite, diaspore and pyrite. It is found that HPAM expresses intensive depression on pyrite and can be used as effective depressants for pyrite. The depression mechanism of HPAM to pyrite was investigated by the determination of contact angle, zeta potential, adsorptive capacity for
Several types of organic polymers with various molecular weights and surface charges are produced for various industrial and agricultural purposes, and recent studies have shown that high molecular weight anionic polymers are the most effective in reducing runoff and soil loss. However, anionic polyacrylamide (PAM) is marketed under various commercial names with variable molecular weight and
Full text of "Sexual Reproduction in Animals and Plants
Full text of "Sexual Reproduction in Animals and Plants [electronic resource]" See other formats
Full text of "Biotechnology in India I [electronic resource]" See other formats
National Management Measures to Control Nonpoint Source
c& I 55 O National Management Measures to Control Nonpoint Source Pollution from Hydromodification Draft ------- I United States Environmental Protection Agency Office of Water Washington, DC 20460 (4503T) EPA 841-D-06-001 July 2006
A GUIDE TO METHODS IN THE BIOMEDICAL SCIENCES This page intentionally left blank A GUIDE TO METHODS IN THE BIOMEDICAL SCIENCES RONALD B. CORLEY, Ph.D. Boston University School of Medicine Boston, MA, USA Springer eBook ISBN: Print ISBN: 0-387-22845-4 0-387-22844-6
Nus Biosci | vol. 1 | no. 3 | pp. 105-158 | November 2009 - UNS
Nus Biosci | vol. 1 | no. 3 | pp. 105-158 | November 2009 - UNS
CELL-BASED BIOSENSORS IN DRUG DISCOVERY PROGRAMS Microtissue Engineering for High Throughput Screening 3D CELL-BASED BIOSENSORS IN DRUG DISCOVERY PROGRAMS Microtissue Engineering for High Throughput Screening WILLIAM S. KISAALITA Boca Raton London New York CRC Press is an imprint of the Taylor & Francis Group, an informa business
- Which polymer thickening agent is a cationic polyacrylamide?
- Zhang et al. , synthesized the polymer thickening agent DXGY-1, which is a cationic polyacrylamide. Its viscosity retention ratio in 12% HCl + 3% HF reached 82%. Liu et al. , synthesized a copolymer from AM, DMDAAC, and AMPS monomers and a cationic monomer X.
- Which polymer is used as thickener in the presence of Ca2+ or Na+?
- Hydrophobic-associated polymer is widely used as thickener in the presence of Ca 2+ or Na +. Three polymers including partially hydrolyzed polyacrylamide (HPAM) and hydrophobically associating polymers (CHAP and CBHAP) were used to clarify the thickening mechanism.
- Which polymer is used to produce partially hydrolyzed polyacrylamide (HPAM)?
- PAM is used to produce partially hydrolyzed polyacrylamide (HPAM), which is linear, anionic, water-soluble, stable, polymeric, and high molecular weight chain of acrylamide (C 3 H 5 NO) monomers (Bao et al., 2010; Braun et al., 2025; Liu et al., 2016; Xiong et al., 2018).
- What is partially hydrolyzed polyacrylamide (PHPA)?
- Partially hydrolyzed polyacrylamide (PHPA), consisting of neutral acrylamide and anionic acrylate groups, is suitable for use in water with <25,000 mg/L TDS 12, 15.
