Polyacrylates - an overview | ScienceDirect Topics
Thomas L. Staples, Pronoy K. Chatterjee, in Textile Science and Technology, 2002. 3.2.1 Polyacrylamides. Polyacrylamides are widely used in an uncrosslinked form as thickeners and flocculants in the oil industry, ore recovery, water and sewerage treatment, and a variety of industrial and consumer products [71].Crosslinked polyacrylamides, particularly when partially hydrolyzed to yield acrylic
Li et al. reported formulation of borate-crosslinked guar fracturing fluids prepared with produced water . In one example, the produced water used had TDS of about 42,000 mg/L and hardness of about 2000 mg/L.
An investigation of the crosslinking of polyacrylamide
A polyacrylamide with an average molecular weight of 10,000 was also produced. The N-methylolacrylamide copolymer was prepared as follows. The 35% aqueous polyacrylamide solution was diluted to 20%. The 90% '%-enriched paraformaldehyde was obtained from Stohler Isotope Chemicals. The para- formaldehyde was dissolved in water to which sodium hy-
Cross-linking in Hydrogels - A Review Jaya Maitra*, Vivek Kumar Shukla Gautam Buddha University, Greater Noida, Gautam Budh Nagar-201312 (U.P), India . Abstract . Hydrogels represent a class of high water content polymers with physical or chemical crosslinks. Their physical properties are similar to soft tissues.
Mechanical Properties of a Reversible, DNA-Crosslinked
Mechanical properties of a polyacrylamide gel with reversible DNA crosslinks are presented. In this system, three DNA strands replace traditional chemical crosslinkers. In contrast to thermoset chemically crosslinked polyacrylamide, the new hydrogel is thermoreversible; crosslink dissociation without the addition of heat is also feasible by
There are papers in which PAAm is crosslinked by gamma irradiation: The gamma ray-induced crosslinking of polyacrylamide in the solid state, Burillo and Ogawa, JPS C, Polymer Letters, 1983.
Cross-linking in hydrogels - a review
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The water diffusivity of hydrogel for 1 h was measured according to the study reported. The hydrogel was cut into cylinder 10 mm in diameter and 4 mm high, then lyophilized. The lyophilized hydrogel was soaked in PBS at 37 °C. The absorbed water at 1 h for each hydrogel (W 1) and equilibrium state (W e) was measured. L is the thickness of the
Synthesis and Characterization of Porous Crosslinked
AbstractCinnamoyloxy ethyl methacrylate (CEMA) was copolymerized with different monomer feed ratios of octadecyl acrylate (ODA) and crosslinked using azobisisobutyronitrile (AIBN) as the initiator and N,N’,N”-trisacryloyl melanine (AM) or N,N’,N”,-trismethacryloylmelanine (MM) crosslinkers. The networks are characterized by scanning electron microscopy (SEM), differential scanning
Introduction. With the extensive use of high-tech weapons, especially precision-guided missiles on the battlefield, the trauma and burns caused by high-energy explosion in naval battle have become the most important and challenging healthcare issues (Zhu et al., 2017; Chen et al., 2025).In modern high-tech naval warfare, the unavoidable exposure of open traumas to seawater with high salt, high
Network defects in polyacrylamide gels - PDF Free Download
The weight conversion at the gel point (αGw) was determined by the gas bubble method in two sets of polyacrylamide (PAA)...
First published on 2nd December 2003. Polymer brushes produced by controlled surface-initiated polymerization provide a route to surfaces coated with well-defined thin polymer films that are covalently bound to the substrate. All of the major controlled polymerization techniques have been applied to the synthesis of polymer brushes and examples of each are presented here.
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