Study on Properties of Branched Hydrophobically Modified
The properties of polymer solution were characterized; the results of the experiments showed that BHMPAM exhibited the properties of pseudoplastic fluid, and the viscosity of BHMPAM was 345.9 mPa · s (polymer concentration was 1750 mg/L) under the condition of 75°C and 9374 mg/L of salinity.
Polyacrylamides constitute a class of polymers that can entirely dissolve or swell in water to form a solution or hydrogel, respectively. Free radical polymerization of acrylamide monomer, using both solution and inverse emulsion polymerization, was applied to produce polyacrylamide with various molecular weights. This investigation was focused on the production of polymers with varying
Analysis of structurally modified polyacrylamides
Caulfield et al. , and references cited therein (e.g. Leung et al., ), have been describing the thermal degradation of polyacrylamides. The compounds are degraded either to glutarimides accompanied with the loss of ammonia or to nitriles by dehydration of the amide groups within the polymer.
Novel polymeric flame retardants based on two acrylamides and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) or 5,5-dimethyl-[1,3,2]dioxaphosphinane-2-oxide (DDPO) are described for several applications in HexFlow® RTM6, a high-performance epoxy resin. Neat resin samples and carbon fiber-reinforced composites were tested for their glass transition temperatures (dynamic mechanical
Temperature Responsive Cellulose-graft-Copolymers via
Well-defined cellulose-graft-polyacrylamide copolymers were synthesized in a grafting-from approach by reversible addition–fragmentation chain transfer polymerization (RAFT). A chlorine moiety (degree of substitution DS(Cl) ≈ 1.0) was introduced into the cellulose using 1-butyl-3-methylimidazolium chloride (BMIMCl) as solvent before being substituted by a trithiocarbonate moiety resulting
polyacrylamide s properties and its applications in high tem-perature and salinity reservoirs, HPAM should be modi ed to change the viscosifying way. In this paper, we synthesized a new branched hydrophobically modi ed polyacrylamide (BHMPAM) and evaluated the properties of the polymer solution. 2. Experiments Involved.. Materials.
Star-Like Branched Polyacrylamides by RAFT polymerization
In the present study the performance of a series of star-like branched polyacrylamides (SB-PAMs) has been investigated in oil recovery experiments to ultimately determine their suitability as novel thickening agent for enhanced oil recovery (EOR) applications. Hereby, SB-PAMs were compared with conventional linear PAM. The effect of a branched molecular architecture on rheology, and
polymers and the relationships between molecular structure and polymer properties. In addition, we welcome submissions on bio-based or renewable polymers, stimuli-responsive systems and polymer bio-hybrids. European Polymer Journal also publishes research on the biomedical application of polymers, including drug delivery and regenerative medicine.
High‐molecular‐weight hydrolyzed polyacrylamides. I
Read "High‐molecular‐weight hydrolyzed polyacrylamides. I. Characterization. Effect of salts on the conformational properties, Journal of Polymer Science (In Two Sections)" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Well-defined cellulose-graft-polyacrylamide copolymers were synthesized in a grafting-from approach by reversible addition–fragmentation chain transfer polymerization (RAFT). A chlorine moiety (degree of substitution DS(Cl) ≈ 1.0) was introduced into the cellulose using 1-butyl-3-methylimidazolium chloride (BMIMCl) as solvent before being substituted by a trithiocarbonate moiety resulting
1. Introduction - Hindawi Publishing Corporation
The properties of polymer solution were characterized; the results of the experiments showed that BHMPAM exhibited the properties of pseudoplastic fluid, and the viscosity of BHMPAM was 345.9 mPa · s (polymer concentration was 1750 mg/L) under the condition of 75°C and 9374 mg/L of salinity. Moreover, BHMPAM also performed well in viscoelasticity which can meet the property requirements for EOR polymer.
The adsorption of polymers affects the cost and oil recovery in oil reservoir exploitation and the flocculation effect in the treatment of oil sand tailings. The adhesion and adsorption of a hydrophobically modified polyacrylamide (HMPAM), i.e., P(AM-NaAA-C 16 DMAAC), on silica and asphaltene were investigated using surface force measurements, thermodynamic analysis and quartz crystal
- How many types of polyaluminium chloride are there?
- There are four types of polyaluminium chloride for sale for water treatment, specifically PAC 30% 01&02. The other types, PAC 30% 03 and PAC 28% 04, are used for industrial wastewater treatment. The four types can be easily distinguished by color, from white to light-yellow and deep-yellow.
- What is Poly Aluminum Chloride used for?
- Poly aluminum chloride is used for water treatment. With the properties of adsorption, aggregation and precipitation, it is an excellent coagulant in sewage treatment, industrial wastewater treatment, drinking water treatment, and circulating water treatment, etc. It is also used in the papermaking industry.
- Why is polyaluminium chloride used in aquaculture?
- Polyaluminium chloride is used in aquaculture to precipitate and remove a large amount of organic matter in the water body. It also has roles in increasing soil moisture content, inhibiting the formation of soil crusts, and increasing water infiltration.
