Just fill in the form below, click submit, you will get the price list, and we will contact you within one working day. Please also feel free to contact us via email or phone. (* is required).
2020-7-11 · COMMERCIAL Polyacrylamides Major manufacturers of acrylamide polymers are BASF, SNF Floerger, Shangdong Tongli , and Kemira. Applications. Poly(acrylamide-co-acrylic acid) and its sodium salts (APAM) are widely used as thickening agent, binder, super absorbent, soil conditioner, filtering aid, flocculating agent, crosslinker, suspending agent, lubricant, and oil recovery agent.
Get Price2018-9-7 · Chemical degradation of PAM that leads to chain scission involves activation of the polymer by free radicals, 42,62,63,64,65,66 most commonly hydroxyl radicals generated in the environment from ...
Get Price2017-8-25 · 2.1 Polyacrylamides Anionic polyacrylamide and cationic polyacrylamide with average molecular weight 107 g/gmol were obtained from Kemira Supplies. The polyacrylamides are highly water absorbent and form soft gels even at low concentration. The anionic and cationic polyacrylamide samples were measured by weight and added to deionized water slowly
Get Price2020-8-1 · Lower molecular weight polyacrylamides exhibit increased inhibition at low concentration (of 2 ppm) than a comparatively higher molecular weight product. The effect of molecular weight on polyacrylamide inhibition of copper deposits is decreased at relatively higher concentrations.
Get PriceGelation tests were conducted to investigate the effect of the degree of hydrolysis on gelation reaction kinetics and gel strength using four low-molecular-weight polyacrylamides (MW = 400,000 daltons), which were 10% (HPAM1-10), 20% (HPAM1-20), 30% (HAPM1-30), and 40% (HPAM-40) hydrolyzed, and Cr-3 (pH = 4.8) and Al-3 (pH = 7.0) crosslinkers.
Get Price2009-11-15 · We have previously reported that CDs applied at very low doses can enhance the flocculation of sludge particles treated with cationic polyacrylamide (c-PAM) and other conventional flocculants . The benefits are obtained as a combination of increased drainage rate, higher cake solids, lower suspended solids in the filtrate, and lower polymer cost.
Get Price2014-8-6 · In oil exploitation, water-so luble polymer surfactant is usually adopted to improve recovery factor. However, ordinary polymer surfactants are restricted by their poor temperature resistance and salt resistance in deep oil reservoir, high temperature in oil well and high salinity in tertiary oil recovery. This research proposed the su r-
Get PriceYang Hu, Yan Xiaohu, Cheng Rongshi, Investigation of solution properties of poly(N‐isopropylacrylamide) in water with its thermohistory, Journal of Polymer Science Part B: Polymer Physics, 10.1002/(SICI)1099-0488(20000501)38:91188::AID-POLB10>3.0.CO;2-G, 38, 9, (1188-1192), (2000).
Get Price2021-1-10 · Thermophysical Properties of Linear Amorphous Polymers. Plastics & Rubber News. Latest breaking news and headlines in the rubber and plastic industry
Get PriceThe above polymer rates are indicative and vary from time to time. Rates of Indian plastic resin manufactures are ex-works in Indian rupees per metric ton exclusive of taxes Freight/Transport, excise, sales tax and other levies on raw material if any will be payable extra as applicable.
Get Price2007-7-5 · The influence of cationic and anionic polyacrylamides (PAM) on the floc size, compressive yield stress, and rheological behaviour of kaolinite suspensions has been investigated at pH 7. At optimum polymer concentrations, the kaolinite floc sizes were larger in …
Get Price2020-8-1 · Polyacrylamides3.4.3.1. Low molecular weight. Polyacrylamides exhibited polarisation with the lower MW product showing the highest extent of polarisation. It is anticipated that the morphology developed from these products will be less rounded and nodular. The results and classifications are summarised further.
Get Price2020-10-3 · polymer development, synthesis and molecular design which intrinsically affect the solubility, thermo‐ responsiveness, hydrophobicity of the substituent and amide groups, and polymer hydration. We also use polyacrylamides with specific primary structures that are …
Get Pricepolymer of acrylamide, whereas the term ‘‘polyacrylamides’’ or ‘‘acrylamide poly- mers’’ will refer to acrylamide-containing polymers, including the homopolymer and copolymers.
Get Price2014-8-6 · 3.5. The Comparison of Physical Properties On the basis the research results above mentioned, unlike traditional polymer, multi-constitutes S-PAM is a new oil displacement polymer which is formed by multi-constitutes graft copolymerization with flexible hydrocarbon chain as the frame based on interactions of molecules.
Get Price2016-12-1 · The dependence of the apparent viscosities (η app) of the hydrophobically modified polyacrylamides (HM-PAMs) on their concentrations was estimated in different aqueous solutions such as; distilled water, brine solution (0.1 mol/l NaCl), formation water and sea water which are shown in Figure 1, Figure 2, Figure 3.Download : Download high-res image (176KB)
Get PriceThe results obtained by light scattering and viscosity measurements on unfractionated samples of poly(N‐isopropylacrylamide) dissolved in methanol and in water seem to show that the chain molecules assume different conformations in the two solvents.In methanol solutions at 25°C, poly(N‐isopropylacrylamide) (poly[1‐(N‐isopropylaminocarbonyl)ethylene]) molecules apparently …
Get PriceWater-soluble polyacrylamide is commercially available in different domains of industry, such as water purified, paper making, pharmacy, agriculture and oil exploitation. Especially polyacrylamide is used for polymer displacement, which can enhance oil recovery through increasing the sweeping efficiency. Good economic effects are achieved by the industrial application of polymer in various oil ...
Get Price2021-1-10 · Thermophysical Properties of Linear Amorphous Polymers. Plastics & Rubber News. Latest breaking news and headlines in the rubber and plastic industry
Get Price2020-9-3 · Excellent emulsion stabilizer with low reactor residue, provides freeze thaw and ionic stability, good handling properties Emulsion polymerization, paper and textile processing, solid cleaners TERGITOL™ 15-S-20 (80%) No >100 16 3 20 315/38 112/42 6 L Excellent emulsion stabilizer with low reactor residue, provides freeze thaw and ionic stability,
Get Price2021-6-15 · In the polymer science and technology focus area of ICMS, the entire chain of knowledge is connected, from chemistry and theory to understanding structure-property relationships, processing, and application of novel polymer materials with exquisite, functional material properties.
Get PriceCationic polyacrylamides water-soluble, linear polymer organic polymer, They have the unique physical properties, such as flocculation. By viscous, decentralized nature, such as surfactant. Linkfloc cationic polyacrylamides are co-polymer of acrylamide with increasing proportions of cationic monomers that have positive charge in aqueous solution.
Get Price2013-11-24 · polymer matrix composites are shown in Fig. 1.3. two types of polymer matrices are shown: ther-mosets and thermoplastics. A thermoset starts as a low-viscosity resin that reacts and cures during processing, forming an intractable solid. A ther-moplastic is a high-viscosity resin that is pro-cessed by heating it above its melting tempera-ture.
Get Price@article{osti_6644497, title = {A model for calculating polymer injectivity including the effects of shear degradation}, author = {Sorbie, K S and Roberts, L J}, abstractNote = {Polymers are frequently injected into oil reservoirs in order to improve recovery. As they reduce the in-situ mobility of the aqueous phase (either by viscosity increase or permeability reduction), the fluid ...
Get PriceWater-soluble polyacrylamide is commercially available in different domains of industry, such as water purified, paper making, pharmacy, agriculture and oil exploitation. Especially polyacrylamide is used for polymer displacement, which can enhance oil recovery through increasing the sweeping efficiency. Good economic effects are achieved by the industrial application of polymer in various oil ...
Get PriceThe leading real estate marketplace. Search millions of for-sale and rental listings, compare Zestimate® home values and connect with local professionals.
Get PriceInvestigation of inverse emulsion assisted controlled release of polyacrylamides for enhanced oil recovery† Zheyu Liu,*ab Shruti Mendiratta,b Xin Chen,a Jian Zhangc and Yiqiang Li *a Conventional polymer flooding (e.g. using polyacrylamide) has been widely used in the oil fields as an
Get Price2018-8-25 · It was reported that the aging of an Epi-DMA (epichlorohydrin-dimethylamine) stock solution resulted in increased NDMA production over a 5-hour period (Kohut and Andrews, 2003). 2.2 Photodegradation of Polyacrylamides Photodegradation of polyacrylamides is believed to be a free radical process which may lead to cleavage of the polymer backbone ...
Get Price2021-1-10 · Thermophysical Properties of Linear Amorphous Polymers. Plastics & Rubber News. Latest breaking news and headlines in the rubber and plastic industry
Get Price2011-4-14 · polymers and the flocs are more open. For low molecular weight polymers patching is the ruling mechanism. High branching C-PAM’s produced large and open flocs, with a reduced tendency to reflocculate after breakage. In addition, the kinetics of flocculation is promoted by polymer branching, except when the degree of branching is too high.
Get Price1984-11-1 · For polyacrylamides B and C, which had lower initial absorption capabilities than polyacrylamide A, over 50% and 40% respectively of the polymer-held moisture remained bound above pF4.2. Comparisons between products based on field capacity ratios ( N C = 2.35) are therefore misleading in terms of the probable benefit to plants, compared with ...
Get Price2017-2-6 · The dilational rheological properties of hydrophobically modified polyacrylamide (HMPAM) or hydrolyzed polyacrylamide (HPAM) solutions without and with imidazolium surfactants ([C14-4-C14im]Br2 and [C14mim]Br) at the air/water surface were investigated using oscillating bubble measurements. The results obtained suggest that imidazolium surfactants interact with the polymer on the surface ...
Get Price1977-1-1 · The pigment retention efficiency, in a model papermaking system, of anionically and cationically modified polyacrylamides was compared to that of the unmodified homopolymer. The anionic polyacrylamide is a much less efficient retention aid, especially at high pH's; the nonionic and cationic polymers perform similarly and without any marked pH dependence. However, it is the nonionic and …
Get PriceMechanical Properties Modulus of Elasticity (Young’s Modulus) Homopolymer 183,000 psi 1,300 MPa Copolymer 155,000 psi 1,100 MPa Poisson’s Ratio 0.42 0.42 Hardness Shore D Scale 55 – 65 55 – 65 Rockwell R Scale Homopolymers 80 - 110 80 - 110 Random and Impact Copolymers 45 - 95 45 - 95
Get Price2013-1-5 · The gel system used in the preparation of dispersed particle gel for water shutoff treatments, which is composed of polyacrylamides and zirconium acetate, was investigated. The gelation process, the effects of various parameters on the gelation properties, the thermal stability, and the microstructure were addressed. The cross-linking reaction process is divided into three successive steps ...
Get Price2020-9-3 · Excellent emulsion stabilizer with low reactor residue, provides freeze thaw and ionic stability, good handling properties Emulsion polymerization, paper and textile processing, solid cleaners TERGITOL™ 15-S-20 (80%) No >100 16 3 20 315/38 112/42 6 L Excellent emulsion stabilizer with low reactor residue, provides freeze thaw and ionic stability,
Get Price2017-7-6 · PAM formulations, depending on polymer chain length and the number and kinds of functional group substitutions along the chain. In erosion polyacrylamides, the PAM homopolymer is copolymerized. Some of the spliced chain segments replace PAM amide functional groups with ones containing sodium ions or protons that freely dis-
Get PriceGlass transition temperature, T g, is an important thermophysical property of polyacrylamides, which can be difficult to determine experimentally and resource-intensive to calculate.Data-driven modeling approaches provide alternative methods to predict T g in a rapid and robust way. We develop the Gaussian process regression model to predict the glass transition temperature of polyacrylamides ...
Get Price2021-7-7 · Cross-linked and branched polyacrylamides are another variant. These are formed with chemical bonds that link one polymer chain to another. These are used to form stronger and drainable flocs commonly used for biosolid production. Structure Properties Linear Lower dosage, better mixing Low strength, smaller floc Comes in a range of
Get Price1995-2-14 · Permeability~Dependent Propagation of Polyacrylamides Under Near-Wellbore Flow Conditions P. Zitha; ...
Get Price2018-8-25 · It was reported that the aging of an Epi-DMA (epichlorohydrin-dimethylamine) stock solution resulted in increased NDMA production over a 5-hour period (Kohut and Andrews, 2003). 2.2 Photodegradation of Polyacrylamides Photodegradation of polyacrylamides is believed to be a free radical process which may lead to cleavage of the polymer backbone ...
Get Price2014-6-24 · also in the low speed. The polymer used in this research was the Flopaam AN110 SH (HPAM) which is an ATBS-based polymer less sensitive to temperature and salinity. The molecular weight of the polymer was provided by the supplier as roughly 8-10 million g/mol with 10% anionicity. The hydrolysis degree was not reported.
Get Price2020-5-20 · Obviously, the apparent viscosity increased slowly as the polymer concentration increased before the turning point. This was because at low concentrations, the polymer macromolecules were mainly in the form of intramolecular association in the solution, which led to the curl of the molecular chain and the reduction of the hydrodynamic volume.
Get Price2019-4-23 · Dry Polymers zAvailable in granular, flake or bead form. zThese products have the highest active polymer content then any other polymer. zRequires at least 1-2 tanks for batching and application to insure proper mixing for optimum performance. zCationic dry solutions have an effective pH range of 6-8; if the value increases or decreases in the substrate, the
Get Price2016-10-30 · In the paper, the hydrophobic associating polymer ACS-210 was prepared by solution polymerization of acrylamide, acrylic acid, salt-resisting monomer and hydrophobic monomer. Chemical structure and properties of the polymer was characterized by FTIR, TGA and XRD. The rheological property of ACS-210 solution was investigated by rheometer. The frictional resistance of the ACS-210 …
Get PriceMechanical Properties of Plastics Toughness of a plastic is measured by its resistance to impacts. It is the ability of a material to resist both fracture and deformation. One common way to discuss the toughness of a polymer is to examine the area underneath the stress - strain curve for the particular polymer.
Get Price2018-8-25 · It was reported that the aging of an Epi-DMA (epichlorohydrin-dimethylamine) stock solution resulted in increased NDMA production over a 5-hour period (Kohut and Andrews, 2003). 2.2 Photodegradation of Polyacrylamides Photodegradation of polyacrylamides is believed to be a free radical process which may lead to cleavage of the polymer backbone ...
Get Price2014-6-24 · also in the low speed. The polymer used in this research was the Flopaam AN110 SH (HPAM) which is an ATBS-based polymer less sensitive to temperature and salinity. The molecular weight of the polymer was provided by the supplier as roughly 8-10 million g/mol with 10% anionicity. The hydrolysis degree was not reported.
Get Price2019-4-23 · Dry Polymers zAvailable in granular, flake or bead form. zThese products have the highest active polymer content then any other polymer. zRequires at least 1-2 tanks for batching and application to insure proper mixing for optimum performance. zCationic dry solutions have an effective pH range of 6-8; if the value increases or decreases in the substrate, the
Get PriceAbstract. A series of surfactive amphiphilic polymer PAADs were prepared from the copolymerization of sodium acrylate, dodecyl polyoxyethylene acrylate (DPA, a surfmer), and acrylamide under the action of a mixed initiating agent consisting of ammonium persulfate-sodium bisulfite/2,2-azobis[2-(2-imidazolin-2-yl) propane] dihydrochloride. The aggregative behaviors of PAADs were explored by 13 C ...
Get Price2020-7-30 · Superabsorbent polymers have been used since the 1950s to serve many functions within soil and agricultural sciences (El Hady, Tayel, & Lofty, 1981).The water retention capacity of SAPs can increase PAW, which can lower plant drought stress (Hüttermann et al., 2009; Yun, Kim, & Choi, 2017).In addition, SAPs can act as a reservoir holding on to nutrients from fertilizer preventing them from ...
Get PriceMechanical Properties of Plastics Toughness of a plastic is measured by its resistance to impacts. It is the ability of a material to resist both fracture and deformation. One common way to discuss the toughness of a polymer is to examine the area underneath the stress - strain curve for the particular polymer.
Get PricePhotochemistry has attracted great interest in the last decades in the field of polymer and material science for the synthesis of innovative materials. The merging of photochemistry and reversible-deactivation radical polymerizations (RDRP) provides good reaction control and can simplify elaborate reaction protocols. These advantages open the doors to multidisciplinary fields going from ...
Get PriceDegradex ® poly (lactic-co-glycolic acid) (PLGA) and polycaprolactone (PCL) microspheres and nanoparticles are biodegradable and biocompatible polymeric particles that are available in a range of 100 nm to 50 μm in diameter. Degradex ® particles can be used to confirm drug carrier compatibility prior to formulation development. In addition ...
Get Price2014-6-24 · also in the low speed. The polymer used in this research was the Flopaam AN110 SH (HPAM) which is an ATBS-based polymer less sensitive to temperature and salinity. The molecular weight of the polymer was provided by the supplier as roughly 8-10 million g/mol with 10% anionicity. The hydrolysis degree was not reported.
Get Price2011-1-28 · behavior of a new associative polymer in porous media. The tetra-polymer has low hydrophobic monomer content and a molecular weight (Mw) of 12-17 million g/mol. Total anionic content is 15-25 mol%, including a few percent of a sulfonic monomer. This polymer is compared with a conventional HPAM with 18-20 million g/mol Mw and 35-40% anionic content.
Get Price2020-5-20 · Obviously, the apparent viscosity increased slowly as the polymer concentration increased before the turning point. This was because at low concentrations, the polymer macromolecules were mainly in the form of intramolecular association in the solution, which led to the curl of the molecular chain and the reduction of the hydrodynamic volume.
Get PriceBiopolymer broths, which preclude the need to wet and disperse a dry powder, are also available. Chemical stability of the polymer is the subject of this report. A literature study of the various reaction mechanisms indicates that redox reactions involving free radicals probably cause polymer degradation and concomitant viscosity losses.
Get PriceThe above polymer rates are indicative and vary from time to time. Rates of Indian plastic resin manufactures are ex-works in Indian rupees per metric ton exclusive of taxes Freight/Transport, excise, sales tax and other levies on raw material if any will be payable extra as applicable.
Get Price2021-7-13 · A polymer network consists of many polymer chains connected through a number of covalent linkages called cross-links. Most of the polymers we talk about here are linear polymers. A linear polymer is composed of one molecule after another, hooked together in a long chain called the backbone.
Get Price2021-6-11 · chart-11-06-2021.png. Platinum Daily prices between 11 Jun 2021 and 11 Jul 2021 JM Base Price /0z Platinum average: 1,106.19 Platinum 1000 1025 1050 1075 1100 1125 1150 1175 1200. Date.
Get Price2021-7-11 · The lubricated grade Delrin® 100ALE adds very low emission properties to the characteristics (low wear, low friction, etc) of the prior version Delrin® 100AL. Various UV resistant grades were recently launched with the added feature of very low emissions and are available in natural and a custom red color: Delrin® 127UVE, 327UVE, and 527UVE.
Get PriceLowe's (LOW) Stock Sinks As Market Gains: What You Should Know. Lowe's (LOW) closed at 192.74 in the latest trading session, marking a -0.79% move from the prior day.
Get Price