Polyacrylamide degradation and its implications
Pei, Y., et al. Investigation of the degradation and stability of acrylamide-based polymers in acid solution: Functional monomer modified polyacrylamide. Petroleum 2 , 399–407 (2016). Article
A comprehensive study of the chemical stability of polyacrylamide (PAA) polymers was conducted. The primary emphasis of the study was to determine the stability of Dow Pusher TM 500 PAA in Sundance brine a 115 deg. 17 (46 deg. C). Experiments were completed which show the effect of biocides, metals, ferrous and ferric iron salts, pH
Mechanical and Thermal Stability of Polyacrylamide-based
The exceptional mechanical and thermal stability of the polyacrylamide-based microgels and their easiness to be tailored for the required application make these chemicals excellent candidates as
Mechanical and Thermal Stability of Polyacrylamide-based Microgel Products for EOR, in: SPE International Symposium on Oilfield Chemistry. Society of Petroleum Engineers, pp. 1–11. doi: 10.2118/164135-MS
Highly efficient antifouling property based on self
The mechanical strength and thermal stability are markedly enhanced due to the change of the structure of modified resins. The preliminary results indicate that resultant resins with crosslinking structure show satisfactory abrasion resistance and swelling properties.
The hydrolysis of polyacrylamide (PAM) and partially hydrolyzed polyacrylamide (HPAM) polymers at elevated temperatures was noted by Muller et al., (1980, 1981a, 1981b) and Shupe (1981) due to the increase of viscosity, change in pH, and evolution of ammonia observed in PAM solutions aged at elevated temperature, as well as precipitation
Polyacrylamide - an overview | ScienceDirect Topics
Polyacrylamide (PAM)-based hydrogel has many applications in the biomedical fields, drug delivery, and biosensor fluids in recent years (Tsou et al., 2016). Contact lense is the most important field that PAM has been used due to its bioinert and hydrophilic properties ( Darnell et al., 2013; Fernández et al., 2005 ).
Besides, in our pervious works [16,17], MD simulation was also successfully performed to investigate the mechanical properties of polymer composites. Herein, the MD simulation method was employed to evaluate the effects of nanosilica on the mechanical and tribological properties of polyvinyl alcohol (PVA)/polyacrylamide (PAM) polymer composites.
SPE
Polyacrylamide Mechanical Degradation and Stability in the Presence of Iron. Ferreira, Vitor H. S. (University of Campinas) | Moreno, Rosangela B. Z. L
Pegylated Polybenzoxazine Networks with Increased Thermal Stability from Miscible Blends of Tosylated Poly(ethylene glycol) and a Benzoxazine Monomer. Macromolecules 2017, 50 (17) , 6468-6481. DOI: 10.1021/acs.macromol.7b01457. Jun Yang and Feng Xu .
Polyacrylamide - WikiMili, The Best Wikipedia Reader
Polyacrylamide (IUPAC poly(2-propenamide) or poly(1-carbamoylethylene), abbreviated as PAM) is a polymer (-CH 2 CHCONH 2-) formed from acrylamide subunits. It can be synthesized as a simple linear-chain structure or cross-linked, typically using N,N '-methylenebisacrylamide.In the cross-linked form, the possibility of the monomer being present is reduced even further.
To simulate the effect of polymers/metal ions on the thermal stability of a pitch-containing system, poly-DADMAC was added first, followed by the addition of metal ion, and then HCPAM. The results are shown in Fig. 2. It should be noted that the metal concentrations were chosen based on their typical profile in the mill deposit samples (Dai
- Does anionic polyacrylamide biodegrade?
- ent only.1 BACKGROUNDAnionic polyacrylamide is the copolymer of acryl mide and acrylic acid. No studies on the environmental fate of polyac ylamide are available. As a high-molecular weight, water-soluble polymer, it is not expected to biode rade or bioaccumulate. Anionic polyacrylamide has a low acute toxicity concer
- Why is anionic polyacrylamide chosen?
- Anionic polyacrylamide is chosen because the intramolecular electrostatic repulsion between polymer segments forces the polymer chains to adopt a more extended conformation, increasing the efficiency of bridging flocculation.
- What is anionic polyacrylamide (Apam)?
- 1. Introduction Anionic polyacrylamide (APAM) is a kind of organic high-molecular polymer with high hydrophilicity and viscosity, which is easily dissolved in water [ , , ].
- Is anionic Polyacrylamide a Tier 1 chemical?
- limisch et al., 1997).Screening Assessment Conclusion – Anionic polyacrylamide is a olymer of low concern. Therefore, it is classified as a tier 1 chemical and requires a ent only.1 BACKGROUNDAnionic polyacrylamide is the copolymer of acryl mide and acrylic acid. No studies on the environmental fate of polyac
