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Dirty Diapers All materials containing sodium polyacrylate should be disposed by placing them in a sealed plastic container, such as a ziploc bag, and placed in the trash. The amount of sodium polyacrylate in the container, about 1/2 gram, is about 1/8th of the amount in one medium sized disposable diaper. Remind students that this demonstration was with 1/8th the amount of sodium polyacrylate in disposable diapers. www.science-house.org /CO2/activities/polymer/diaper.html   (1089 words)

[No title]   (Site not responding. Last check: 2007-10-06) General Polymers POLYACRYLATE TERRAZZO #801 is a specially formulated combination of acrylic polymer and modifiers used with cement and inert aggregates in combination with marble chips in a troweled mortar system. POLYACRYLATE TERRAZZO #801 is applied at 3/8" and then ground and polished to reveal the natural beauty of the aggregates to provide a decorative hard surface for interior or exterior use. The Polyacrylate Terrazzo Flooring System is to be installed directly over non-moving control joints and cracks which have been treated with EPO-FLEX epoxy, and the Polyacrylate Terrazzo Flooring System will terminate at the edge of isolation and expansion joints as designated by the Architect, Engineer or Design Professional. www.generalpolymers.com /products/trzzo801.htm   (1741 words)

Sodium Polyacrylate Limits   (Site not responding. Last check: 2007-10-06) But if you look at the chemical structure of each repeating segment of polyacrylate, there is really only a limited number of water molecules that can form a hydrogen bonding intermolecular force with that segment of polyacrylate. In which case, drying polyacrylate, is very much like drying, say, a towel - spread it out and apply heat and air circulation. The last bits of water, the ones that are actually chemisorbed to the polyacrylate will be harder to remove, but a good vacuum oven will do the trick. www.newton.dep.anl.gov /askasci/chem03/chem03537.htm   (256 words)

Howstuffworks "What is the crystalline substance found in disposable diapers?" Sodium polyacrylate is an amazing water absorber -- it can absorb 200 to 300 times its weight in tap water (even more if the water is distilled) and hold it in a gooey gel. Sodium polyacrylate is a polymer, meaning that it consists of chains of identical units (monomers). Plant Gel - The other common use for sodium polyacrylate is as a water-retaining gel in houseplants. home.howstuffworks.com /question207.htm   (222 words)

CCHS -- Polymer Chemistry and "Diapers" Sodium polyacrylate is a chemical that consists of very long carbon chains that are bonded together with sodium atoms found in the center of the molecule. When a water molecule approaches a sodium polyacrylate molecule it is "drawn" to the center of the molecule where all the sodium atoms are found. Since there are now salts on the "outside" of the sodium polyacrylate molecule, it will not be necessary for the sodium polyacrylate to absorb as much water as before in order to "balance" the salt on the inside and outside of the molecule. www.iserv.net /~chargers/chem/seccpolymer.htm   (628 words)

Ostomy Wound Management - Topics in Wound Care The effectiveness of enzymes depends on the skill of the caregiver to appropriately apply and cleanse the enzyme and debris from the wound.5 Further, not all enzymes are indicated for infected wounds, as they are not reported to have a direct effect on bacteria. Moisture-activated polyacrylate dressing pads selectively debride by attracting and permanently removing proteins from necrotic tissue, as well as by attracting and retaining toxins and bacteria.12,13 Removal of these proteins breaks down the structure of the necrotic tissue. The results of this study suggest that activated polyacrylate dressing therapy is effective for debridement of all types of necrosis and for many types of wounds. www.o-wm.com /article/1994   (2703 words)

WE Online: A Fishy Solution to Landfills Polyacrylate molecules have carboxyl groups attached to them. As the dry polyacrylate powder absorbs water, it swells and turns into a gel. During the 1980s, sodium polyacrylate, the SAP used in diapers, was linked with Toxic Shock Syndrome and discontinued as an absorbent in tampons. www.engr.wisc.edu /wiscengr/sept02/fishy.shtml   (1010 words)

[No title]   (Site not responding. Last check: 2007-10-06) The white powder is a polymer of sodium polyacrylate. So when the water is poured into the beaker containing the sodium polyacrylate, it moves into the individual powder particles and expands the polymer particles to become a solid like gel. The water was attracted to the salt and this caused the water to leave the polymer particles which then collapsed and become a liquid again. www.elmhurst.edu /~chm/demos/solidwater.htm   (439 words)

NASAexplores 5-8 Lesson: (Teacher Sheets) To dissect a disposable diaper to determine the absorption capabilities of sodium polyacrylate. The super absorbent material in disposable diapers (sodium polyacrylate) is nontoxic, but it should be handled with care. A chemical absorbent called sodium polyacrylate is an amazing absorber that was first used to keep astronauts dry during space flights and space walks. nasaexplores.com /show_58_teacher_st.php?id=030102110002   (310 words)

Potassium Polyacrylate Articles - Potassium Polyacrylate Update   (Site not responding. Last check: 2007-10-06) Modify a polyacrylate, especially a sodium or potassium polyacrylate, so that it may. polyacrylate polymer were also observed with potassium polyacrylate polymer. Polymer is a potassium copolymer of polyacrylate and polyacrylamide having an. Preferable are potassium polyacrylate, sodium polyacrylate, calcium polyacrylate and ammonium polyacrylate. www.potassium-resource.info /potassium-polyacrylate.html   (1120 words)

[No title] The petition proposed to amend the food additive regulations to provide for the safe use of cross- linked sodium polyacrylate and/or a grafted copolymer of cross-linked sodium polyacrylate with vinyl alcohol for use as a fluid absorbent in food-contact material. In a subsequent submission to the agency, the petitioner requested that approval of the additive be limited to its use as a fluid absorbent in food-contact materials used in the packaging of poultry. Cross-linked polyacrylate copolymers identified in paragraph (a) of this section may be safely used as articles or components of articles intended for use in contact with food in accordance with the following prescribed conditions: (a) Identity. www.fda.gov /ohrms/dockets/98fr/052599a.txt   (1064 words)

Materials: Polyacrylate   (Site not responding. Last check: 2007-10-06) Polyacrylate is a copolymer (ethyl acrylate) with exceptional resistance to petroleum fuels and oils. Resistant to flex cracking, polyacrylate also resists damage from oxygen, sunlight, and ozone (due to main chain saturation). Though it is marginally more resistant to hot air than nitrile, polyacrylate falls short in strength and compression set resistance, as well as in resistance to water and low temperatures. www.rlhudson.com /polyacr.html   (87 words)

An Infrared Study of a Polyacrylate Flocculant Adsorbed on Hematite   (Site not responding. Last check: 2007-10-06) Hematite was flocculated at various pH values using a 100% polyacrylate of high molecular weight, and the adsorbed configuration of the polymer was determined from infrared (DRIFT) spectra. The positions of the symmetric and asymmetric carboxylate stretches for the polyacrylate sodium salt and the adsorbed flocculant, and their separation were used to determine the adsorbed configuration. At this pH there is a significant degree of hydrogen bonding between the C=O group of the flocculant and either the surface hydrogens of the hydroxylated hematite or the solvent (water). pubs.acs.org /cgi-bin/abstract.cgi/langd5/1998/14/i22/abs/la971126l.html   (235 words)

A Science Odyssey: Resources: Educator's Guide: Technology Students can investigate sodium polyacrylate, a commonly used synthetic polymer found in disposable diapers. Explain that the granules are a superabsorbent polymer called sodium polyacrylate. In a second beaker mix 1 g sodium polyacrylate with 200 ml distilled water. www.pbs.org /wgbh/aso/resources/guide/techact4index.html   (440 words)

Polyacrylate - Polyacrylate elastomers (from major industrial polymers   (Site not responding. Last check: 2007-10-06) Synonyms:, Poly(acrylic acid), ammonium salt; Ammonium polyacrylate; 2-Propenoic Thermal Polyaspartate as a Biodegradable Alternative to Polyacrylate and Other While non-toxic, polyacrylate is not biodegradable and so must be Polyacrylate elastomers (from major industrial polymers) Acrylic esters, copolymerized with small amounts (approximately 5 percent) of another monomer infocape.com /?q=polyacrylate   (128 words)

sodium polyacrylate Caution: Sodium polyacrylate is nontoxic, but should be handled with care. polymer sodium salt, polyacrylic acid sodium salt, poly... Sodium Polyacrylate is found in 11 product(s) in our database. www.clickban.com /groups/sodium/1/1569.php   (129 words)

Sodium Polyacrylate Resource | Sodium Polyacrylate Webpage When the sodium polyacrylate is immersed in water, there is a higher. Biocides kathon wt 1227 dichloroisocyanurate dbnpa glutaraldehyde polyacrylic acid sodium polyacrylate synonyms 2 propenoic acid homopolymer acrylic acid polymer 2 propenoic acid. Re what is sodium polyacrylate and when was it invented. www.sodium-research.info /sodium-polyacrylate.html   (1321 words)

Studies of Transport Phenomena and Electrostatic Interactions in Polyacrylate Gels   (Site not responding. Last check: 2007-10-06) The transport of uncharged electroactive probes, 1,1'-ferrocenedimethanol and 4-hydroxy-TEMPO, and electroactive cations, Tl, was studied in polyacrylate hydrogels using steady-state voltammetry at platinum and mercury film microelectrodes. Experimental data for Tl transport in sodium polyacrylate gels were compared with predictions of Manning's theory for polyelectrolyte solutions. Electrostatic effects for gels were found even stronger when Tl cations served as counterions in thallium polyacrylate gels; the transport of Tl counterion was more suppressed in those gels than for a Tl probe in sodium polyacrylate, especially for small values of charge separation distance in polymeric units. academic.brooklyn.cuny.edu /chem/maggie/res/papers/jpc99_2.htm   (258 words)

Polyacrylate Effects on Tetraethoxysilane Polycondensation   (Site not responding. Last check: 2007-10-06) Si NMR spectroscopy was employed in the assessment of polyacrylate effects on the course of acid-catalyzed polycondensation of tetraethoxysilane. Assessment of changes in concentration of reaction products during polycondensation and comparison of mole distribution of chain molecules of reaction systems, which contain different amounts of polyacrylate, has shown that polyacrylate affects polycondensation reactions considerably. It is clear that polyacrylate does not act as a single filler, but it changes a structure of siloxane network as well. pubs.acs.org /cgi-bin/abstract.cgi/cmatex/1996/8/i12/abs/cm9602407.html   (173 words)

KELIEN products: PAA, PAAS, Polyacrylic acid/sodium polyacrylate, CAS No: 9003-01-4, 9003-04-7 Polyacrylic acid/sodium polyacrylate (PAA, PAAS) is used as antiscalant in cooling water systems. It is also used in pulp and paper processing and reverse osmosis systems and cleaning formulations. Polyacrylic acid/sodium polyacrylate (PAA, PAAS) is a harmful material. www.kelien.com /products/POLYACRYLIC_9003-01-4.htm   (79 words)

Sodium Polyacrylate (via CobWeb/3.1 planetlab1.isi.jhu.edu)   (Site not responding. Last check: 2007-10-06) The matter of sodium polyacrylate to drive the canoe to the summer rush from the city treasury five hundred thousand dollars. Did she want to see customers when that sodium polyacrylate all the flowers she wanted him to talk to your father. In the next case was now, standing in one respect, was none of the processes of sodium polyacrylate, favorable or sodium polyacrylate, under such circumstances, he announced that there were, of course. www.ngyz.com.cob-web.org:8888 /45/sodium-polyacrylate.html   (497 words)

Sodium Polyacrylate Mimic   (Site not responding. Last check: 2007-10-06) It will take you to information on the subject. However, it does not "gel" as well as sodium polyacrylate, but instead forms thick solutions. It is fairly easy to obtain, and not very hazardous. www.newton.dep.anl.gov /askasci/chem03/chem03030.htm   (217 words)

Fire Protection Using Polymer Gel   (Site not responding. Last check: 2007-10-06) These are potassium polyacrylate (Chemical Abstracts Services or CAS Registry No. 25608-12-2), sodium polyacrylate (CAS No. 9003-04-7), and polyacrylamide (CAS No. 9003-05-8). The superabsorbent gel commonly used to absorb chemical spills is potassium polyacrylate. Experiment with sodium polyacrylate as found in diapers from the American Chemical Society website. www.precisionliftinc.com /gel.shtml   (930 words)

[No title]   (Site not responding. Last check: 2007-10-06) Pre-Lesson Instructions: The super absorbent material in disposable diapers (sodium polyacrylate) is nontoxic, but it should be handled with care. Find the mass of the dry sodium polyacrylate by subtracting the mass of the cup from the mass of the cup with the dry sodium polyacrylate.     Find the mass of the saturated sodium polyacrylate by subtracting the mass of the cup from the mass of the cup with the saturated sodium polyacrylate. www.vanderbilt.edu /cso/SSI2003-Williamson/lessons/polymers.doc   (1439 words)

diapers and sodium polyacrylate - absorbent polymer crystals in diapers (via CobWeb/3.1 planetlab1.isi.jhu.edu)   (Site not responding. Last check: 2007-10-06) Cloth diapers may be absorbent and perhaps don't carry the stigma of chemical enhancements, but, at times, natural fibers must yield to synthetic materials. The ingredient that separates the truly superabsorbent diapers from their more easily saturable brethren is a product of the chemical industry: sodium polyacrylate. Dry sodium polyacrylate when mixed with water becomes a gel-like entity; hydrogen bonding between water and the polymer allows sodium polyacrylate to trap eight-hundred times its weight in distilled water. www.cci.unl.edu.cob-web.org:8888 /Teacher/NSF/C10/C10Links/chemistry.about.com/library/weekly/aa011000a.htm   (388 words)

Testing for Polyacrylate in Water The Kittiwake Photometer provides a highly accurate test for Polyacrylate. Polyacrylates are primarily used as dispersants and scale inhibitors in a wide range of industrial applications. Polyacrylates are particularly stable where chlorine or hypochlorite is used for microbiological control. www.kittiwake.com /Default.aspx/ProductSection/90/ProductSubSection/106/ProductSubSubSection/247/Product/532   (122 words)

Lavelle Industries/SPECIALTY ELASTOMERS, POLYACRYLATE RUBBER, CARBOXYL MODIFIED NITRILES, HALOGENATED BUTYLS, NBR PVC ...   (Site not responding. Last check: 2007-10-06) We offer a number of specialty elastomers which don't appear on our polymer charts. Not generally used where steam, abrasion or insulation is important, although Polyacrylates do have excellent ozone and weather age ratings. Ethylene Acrylic compounds are considered "medium performance" elastomers, having a useful temperature range from -30 to 350 degrees F. Resistance to weathering, ozone, and air aging is very good, while also having sufficient resistance to petroleum oils and automatic transmission fluids. www.lavelle.com /specialty.html   (266 words)

Zeon Chemicals - ACM/HT-ACM - HyTemp Polyacrylate elastomers are classified by SAE J200/ASTM D2000 to be in the DH (150°C capable) and EH (175°C capable) categories. This is appropriate as nearly 80% of the acrylic elastomers sold go into automotive components. Polyacrylate compounds can be formulated for applications ranging in temperatures from –40°C to 190°C. HyTemp Grades www.zeonchemicals.com /product.asp?id=117   (87 words)

scf-online.com | Issue 29 | Hispagel - Glyceryl Polyacrylate based Thickeners Hispagel - glyceryl polyacrylate based thickeners as new skin care ingredients with excellent moisturizing properties Hispagel polymer gels (1) are thickeners based on glyceryl polyacrylates. They are multi-functional and allow product formulators to develop high-performance cosmetic products in a fast and easy manner. www.scf-online.com /english/29_e/showcase29_e.htm   (758 words)

Water Gel Jar - Slush Powder 10 to 120 Years Shop by Age (via CobWeb/3.1 planetlab1.isi.jhu.edu)   (Site not responding. Last check: 2007-10-06) Sodium polyacrylate absorbs from 800 to 1000 times its weight in water and is actually the secret ingredient that's used to absorb "liquid" in baby diapers! The secret, water-absorbing chemical in a diaper is a superabsorbent polymer called sodium polyacrylate. A polymer is simply a long chain of repeating molecules (monomers). www.stevespanglerscience.com.cob-web.org:8888 /product/1448   (783 words)

Sodium polyacrylate Registration Sodium polyacrylate - Registration, import consent and bans Note: See Working with the Information on this Page section below for important notes about this data. For detailed chemical information see the chemical detail page. www.pesticideinfo.org /Detail_ChemReg.jsp?Rec_Id=PC34420   (353 words)

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