32 Factorial Design And Response Surface Analysis Optimization Of N-carboxybutylchitosan Synthesis

dc.creatorDos Santos K.S.C.R.
dc.creatorSilva H.S.R.C.
dc.creatorFerreira E.I.
dc.creatorBruns R.E.
dc.date2005
dc.date2015-06-26T14:07:02Z
dc.date2015-11-26T15:41:19Z
dc.date2015-06-26T14:07:02Z
dc.date2015-11-26T15:41:19Z
dc.date.accessioned2018-03-28T22:49:49Z
dc.date.available2018-03-28T22:49:49Z
dc.identifier
dc.identifierCarbohydrate Polymers. , v. 59, n. 1, p. 37 - 42, 2005.
dc.identifier1448617
dc.identifier10.1016/j.carbpol.2004.08.020
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-10844294070&partnerID=40&md5=8174a495a9f925ff43a54528b528156d
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/93264
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/93264
dc.identifier2-s2.0-10844294070
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1264588
dc.descriptionA 32. factorial design investigation to optimize N-carboxybutylchitosan was carried out varying the levulinic acid/chitosan molar ratio between 1.00 and 3.00 and the sodium borohydride/chitosan molar ratio from 0.50 to 1.00. 1H NMR spectra signals at 1.0 and 2.5 ppm were used to monitor the reaction system. A quadratic model having significant terms for both molar ratios was found for N-carboxybutylchitosan substitution degree whereas a linear model best describes the substitution degree of 5-methylpyrrolidinone chitosan. Maximum N-carboxybutylchitosan and minimum 5-methylpyrrolidinone chitosan substitution degrees occur for levulinic acid/chitosan molar ratios between 2.00 and 3.00 and a 0.50 for sodium borohydride/chitosan molar ratio. © 2004 Elsevier Ltd. All rights reserved.
dc.description59
dc.description1
dc.description37
dc.description42
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dc.languageen
dc.publisher
dc.relationCarbohydrate Polymers
dc.rightsfechado
dc.sourceScopus
dc.title32 Factorial Design And Response Surface Analysis Optimization Of N-carboxybutylchitosan Synthesis
dc.typeArtículos de revistas


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