| Revision as of 13:31, 5 December 2011 editBeetstra (talk | contribs)Edit filter managers, Administrators172,031 edits Saving copy of the {{chembox}} taken from revid 458180966 of page PolyDADMAC for the Chem/Drugbox validation project (updated: ''). |
Latest revision as of 15:26, 16 January 2024 edit Dshanno777 (talk | contribs)1 editm Flocculation v coagulation correction. Adding Jerry Boothe as a major contributor to the science of the use of pDADMAC. |
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{{ambox | text = This page contains a copy of the infobox ({{tl|chembox}}) taken from revid of page ] with values updated to verified values.}} |
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| verifiedrevid = 374532111 |
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| verifiedrevid = 464209309 |
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| Name = PolyDADMAC |
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| Name = PolyDADMAC |
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| ImageFile = PolyDADMAC.png |
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| ImageFile = Polyquaternium-6.svg |
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| ImageSize = 150px |
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| ImageSize = 150px |
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| IUPACName = |
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| IUPACName = |
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| SystematicName = |
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| SystematicName = |
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| OtherNames = Poly(dimethyldiallylammonium chloride) |
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| OtherNames = Poly(dimethyldiallylammonium chloride); Polyquaternium-6 |
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|Section1={{Chembox Identifiers |
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| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}} |
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| ChemSpiderID = NA |
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| ChemSpiderID = None |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASNo = 26062-79-3 |
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| CASNo = 26062-79-3 |
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| PubChem = 33286 |
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| EC_number = 230-993-8 |
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| UNII = YFL33X52PX |
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| Formula = (C<sub>8</sub>H<sub>16</sub>NCl)<sub>n</sub> |
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| Formula = (C<sub>8</sub>H<sub>16</sub>NCl)<sub>n</sub> |
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| MolarMass = variable |
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| MolarMass = Variable |
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| Solubility = soluble |
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| Solubility = Soluble |
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'''Polydiallyldimethylammonium chloride''' (shortened '''polyDADMAC''' or '''polyDDA'''), also commonly ]-6, is a ] of diallyldimethylammonium chloride (DADMAC). The molecular weight of polyDADMAC is typically in the range of hundreds of thousands of grams per mole, and even up to a million for some products. PolyDADMAC is usually delivered as a liquid concentrate having a solids level in the range of 10 to 50%. It is a high charge density cationic ]. The charge density makes it well suited for ]. Actually, pDADMAC or DMDAAC, is used as a coagulant - a charge neutralization process that precedes flocculation. |
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==History== |
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PolyDADMAC polymers were first prepared and studied in 1957 by Professor George Butler at the University of Florida.<ref>G. B. Butler, R. J. Angelo: ], 79, 3128 (1957)</ref> It was remarkable as it was soluble in water in contrast at the time to other known synthetic polymers formed by polymerization of monomers containing more than one vinyl functionality. The structure and reaction path was determined in 2002 with ] studies. Much of what we know about pDADMAC in water treatment and personal care is from Dr Jerry Boothe of Calgon Corp. |
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==Synthesis== |
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The monomer DADMAC is formed by reacting two equivalents of ] with ]. |
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PolyDADMAC is then ] by ] of DADMAC with an organic ] used as a ]. Two polymeric structures are possible when polymerizing DADMAC: ''N''-substituted ] structure or ''N''-substituted ] structure. The pyrrolidine structure is favored.<ref>{{Citation | last = John | first = Wilson | date = 2002 | title = Synthesis and Use of PolyDADMAC for Water Purification | url = http://academic.sun.ac.za/unesco/Conferences/Conference2002/JohnP.pdf | display-authors = etal | access-date = 2009-01-05 | archive-url = https://web.archive.org/web/20110719032953/http://academic.sun.ac.za/unesco/Conferences/Conference2002/JohnP.pdf | archive-date = 2011-07-19 | url-status = dead }}</ref> |
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:] structure)]]{{clear-left}} |
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==Applications== |
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===Effluent treatment=== |
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PolyDADMAC is used in ] as a primary organic ] which neutralizes ] ]al material and reduces ] volume compared with ] coagulants. |
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===Pulp and paper industry=== |
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PolyDADMAC is used for controlling disturbing substances in the ] process. It provides superior ] of pitch from ] and of ] from coated broke. Used in the short circulation of a ] to enhance ] and ]. In addition, it can be used to improve the efficiency of disk filters and flotators, and for ] of ]s to provide maximal filler retention. |
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===Water purification=== |
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PolyDADMAC is used as a coagulant in ]. It is effective in coagulating and flocculating inorganic and organic particles such as silt, clay, algae, bacteria and viruses. At high concentrations the organic polymer can remove natural organic matter such as ] resulting in fewer ] precursors and less color.<ref>Edzwald, James K., ed. (2011). ''Water Quality and Treatment.'' 6th Edition. New York:McGraw-Hill. p. 8.64. {{ISBN|978-0-07-163011-5}}</ref> |
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==References== |
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{{reflist}} |
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] |
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