Resultanddiscussion3.1.Optimization

Resultanddiscussion
3.1.Optimizationofexperimentalvariables
Before thedevelopmentofresponsesurfacemodels,theeffects
of surfactanttype,salttype,equilibrationtimeandtemperatureon
extractionefficiency ofSY,ARandBBwereinvestigated.De-
pending uponthenatureofthesoluteandsurfactantsystem,a
solute canbindtodifferentregionsoftheaggregate.Typically,a
polar moleculecanbindtothesurfaceofmicellesviaelectrostatic
interactionswhilenon-polarmoleculecanpartitionintothehy-
drophobic micellecore.Thepartitiongradeofanunchargedmo-
lecule intothehydrophobicmicellarcorereliesonthemagnitude
of itssolubilizationoraffinity tothemicellecore,themolecule
polarity andthesolutioncomposition.Onceorganicmoleculesare
partitioned intomicellescore,theextractionorseparationofthose
molecules fromthematrixcanbeachievedbyphaseseparationas
occurs inCPE [20].
Severalsurfactantincludingnon-ionic(TritonX-100andTriton
X-114),cationic(CTAB)andanionic(SDS)surfactantweretested
for CPE.Experimentalresultsshowedthatextractionefficiency in
the presenceofSDSorCTABwereverylowforallofdyesbutin
the presenceofTritonX-100orTritonX-114weregoodforBBand
SY.ItwasfoundthatcloudpointextractionofAlluraredismore
efficient inthepresenceofcationicsurfactant,cetyltrimethyl
ammonium bromide(CTAB)andTritonX-100.Theextractionef-
ficiency ofSYandBBremainedconstantinpresenceofCTAB.
Therefore,mixtureofTritonX-100þCTABwaschosenbecauseof
its higherextractionefficiency ascomparedwithothersurfactants.
At pHrangeof3.5–4.5, nearlyalldyemoleculesareinneutralform
and canbeextractedtosurfactantphase.TritonX-100
(C14H22O(C2H4O)n) isanonionicsurfactantthathasahydrophilic
polyethyleneoxidechain(onaverageithas9.5ethyleneoxide
units) andanaromatichydrocarbonlipophilicorhydrophobic

ผลลัพธ์ (ไทย) 1:

Resultanddiscussion3.1.Optimizationofexperimentalvariablesก่อนที่จะ thedevelopmentofresponsesurfacemodels, theeffectssurfactanttype, salttype, equilibrationtimeandtemperatureonextractionefficiency ofSY,ARandBBwereinvestigated.De-รอ uponthenatureofthesoluteandsurfactantsystem การตัวถูกละลาย canbindtodifferentregionsoftheaggregate โดยทั่วไป การmoleculecanbindtothesurfaceofmicellesviaelectrostatic ขั้วโลกinteractionswhilenon-polarmoleculecanpartitionintothehy -drophobic micellecore Thepartitiongradeofanunchargedmo-lecule intothehydrophobicmicellarcorereliesonthemagnitudeของ itssolubilizationoraffinity tothemicellecore, themoleculeandthesolutioncomposition ขั้ว Onceorganicmoleculesareพาร์ติชัน intomicellescore, theextractionorseparationofthosefromthematrixcanbeachievedbyphaseseparationas โมเลกุลเกิด inCPE [20]Severalsurfactantincludingnon-ionic(TritonX-100andTritonX-114), surfactantweretested andanionic (SDS) (CTAB) cationicสำหรับ CPE Experimentalresultsshowedthatextractionefficiency ในpresenceofSDSorCTABwereverylowforallofdyesbutin การpresenceofTritonX 100orTritonX 114weregoodforBBandซี่ ItwasfoundthatcloudpointextractionofAlluraredismoreมีประสิทธิภาพ inthepresenceofcationicsurfactant, cetyltrimethylแอมโมเนียโบรไมด์ (CTAB) andTritonX-100.Theextractionef -ficiency ofSYandBBremainedconstantinpresenceofCTABดังนั้น mixtureofTritonX-100þCTABwaschosenbecauseofascomparedwithothersurfactants ของ higherextractionefficiencyที่ pHrangeof3.5 – 4.5, nearlyalldyemoleculesareinneutralformและ canbeextractedtosurfactantphase TritonX-100(C14H22O(C2H4O)n) isanonionicsurfactantthathasahydrophilicpolyethyleneoxidechain (onaverageithas9.5ethyleneoxideandanaromatichydrocarbonlipophilicorhydrophobic หน่วย)

ผลลัพธ์ (ไทย) 2:

Resultanddiscussion
3.1.Optimizationofexperimentalvariables
ก่อน thedevelopmentofresponsesurfacemodels, theeffects
ของ surfactanttype, salttype, equilibrationtimeandtemperatureon
extractionefficiency ofSY, ARandBBwereinvestigated.De-
ที่ค้างอยู่ uponthenatureofthesoluteandsurfactantsystem
เป็นตัวละลายcanbindtodifferentregionsoftheaggregate.Typically
เป็นขั้วโลก micellecore.Thepartitiongradeofanunchargedmo- lecule intothehydrophobicmicellarcorereliesonthemagnitude ของ itssolubilizationoraffinity tothemicellecore, themolecule ขั้ว andthesolutioncomposition.Onceorganicmoleculesare แบ่งพาร์ติชัน intomicellescore, theextractionorseparationofthose โมเลกุล fromthematrixcanbeachievedbyphaseseparationas เกิดขึ้น inCPE CPE.Experimentalresultsshowedthatextractionefficiency ในpresenceofSDSorCTABwereverylowforallofdyesbutin inthepresenceofcationicsurfactant, cetyltrimethyl โบรไมด์แอมโมเนียม (CTAB) andTritonX-100.Theextractionef- ดำรง ofSYandBBremainedconstantinpresenceofCTAB. ดังนั้น mixtureofTritonX-100þCTABwaschosenbecauseof ascomparedwithothersurfactants higherextractionefficiency ของ. ที่ pHrangeof3.5-4.5, nearlyalldyemoleculesareinneutralform และ canbeextractedtosurfactantphase.TritonX-100 (C14H22O (C2H4O) n) isanonionicsurfactantthathasahydrophilic polyethyleneoxidechain ( onaverageithas9.5ethyleneoxide หน่วย) andanaromatichydrocarbonlipophilicorhydrophobic