Kuranga imbaraga za rheologiya zivanze na sulfate zidafite uruvange rwa cocamidopropyl betaine-sodium methyl cocoyl taurate ukurikije ibice, pH, hamwe na ionic

Intangiriro

Sisitemu yo mu bwoko bwa binary surfactant igizwe nubwoko bwishyurwa butandukanye ikoreshwa cyane mubice byinshi byinganda, harimo kwisiga, imiti, imiti y’ubuhinzi, n’inganda zitunganya ibiribwa. Kwiyongera kwinshi kwizi sisitemu biterwa cyane cyane ninshingano zabo zisumba iyindi mikorere na rheologiya, ituma imikorere yiyongera muburyo butandukanye. Kwishyira hamwe kwiteranya nkibi bintu bisa nkibinyo, byegeranye byegeranye bitanga imiterere ya macroscopique ihindagurika cyane, harimo kwiyongera kwa viscoelasticité no kugabanya impagarara zintera. By'umwihariko, guhuza ibice bya anionic na zwitterionic byerekana imbaraga zoguhuza ibikorwa byubuso, ubwiza, hamwe no guhinduranya impagarara. Iyi myitwarire ituruka ku mikoranire ikaze ya electrostatike na steric hagati yitsinda ryumutwe wa polar hamwe numurizo wa hydrophobique umurizo wa surfactants, bitandukanye na sisitemu imwe rukumbi, aho imbaraga za electrostatike zanga akenshi zigabanya imikorere myiza.

Cocamidopropyl betaine (CAPB; SMILES: CCCCCCCCCCCCCC (= O) NCCCN + (C) CC ( Imiterere ya zwitterionic ya CAPB ituma imbaraga za electrostatike zikorana na anionic surfactants, kuzamura ituze rya furo no guteza imbere imikorere myiza. Mu myaka mirongo itanu ishize, CAPB ivanze na sulfate ishingiye kuri sulfate, nka CAPB - sodium lauryl ether sulfate (SLES), yabaye ishingiro mubicuruzwa byita ku muntu. Nubwo, nubwo imikorere ya sulfate ikora neza, impungenge zijyanye nubushobozi bwabo bwo kurakara dermal ndetse no kuba 1,4-dioxane, ikomoka kuri ethoxylation, byatumye abantu bashishikazwa nubundi buryo bwa sulfate. Abakandida basezerana barimo aminide-aside ishingiye kuri surfactants, nka taurates, sarcosinates, na glutamates, byerekana biocompatibilité hamwe n’imiterere yoroheje [9]. Nubwo bimeze bityo ariko, amatsinda manini asa nayandi matsinda yubundi buryo akenshi abangamira ishyirwaho ryimiterere ya micellar yubatswe cyane, bisaba gukoresha imvugo ihindura imvugo.

Sodium methyl cocoyl taurate (SMCT; SMILES:
CCCCCCCCCCCC = = SMCT ifite amatsinda ahuza amide-matsinda ya taurine hamwe nitsinda rya anionic sulfonate ikomeye, bigatuma biodegradable kandi igahuzwa nuruhu pH, rushyira nkumukandida utanga ikizere cyo gutanga sulfate. Taurate surfactants irangwa nimbaraga zabo zikomeye, kwihanganira amazi akomeye, ubwitonzi, hamwe na pH ihamye.

Ibipimo bya rheologiya, harimo ubwoya bwogosha, moduli ya viscoelastic, hamwe numusaruro utanga umusaruro, nibyingenzi mukumenya ituze, imiterere, nigikorwa cyibicuruzwa bishingiye kuri surfactant. Kurugero, ubwinshi bwimyenda yimyenda irashobora kunoza kugumana substrate, mugihe guhangayikishwa numusaruro bigenga uburyo bwo gukurikiza uruhu cyangwa umusatsi nyuma yo kubisaba. Ibiranga imiterere ya macroscopique ihindurwa nibintu byinshi, harimo kwibanda kuri surfactant, pH, ubushyuhe, hamwe no gufatira hamwe cyangwa inyongeramusaruro. Kurwanya ibicuruzwa bishobora kwishyurwa birashobora guhinduka muburyo butandukanye bwa microstructural, uhereye kuri micelles ya serefegitike na viticles kugeza ibice byamazi ya kristaline, ibyo nabyo bigira ingaruka zikomeye kuri rheologiya. Imvange ya amphoteric na anionic surfactants akenshi ikora micelles ndende ndende (WLMs), izamura cyane imiterere ya viscoelastic. Gusobanukirwa microstructure - umubano wumutungo rero, ni ngombwa mugutezimbere imikorere yibicuruzwa.

Ubushakashatsi bwinshi bwubushakashatsi bwakoze ubushakashatsi kuri sisitemu ebyiri, nka CAPB - SLES, kugirango isobanure microstructural ishingiro ryimiterere yabyo. Kurugero, Mitrinova n'abandi. Ingano ya micelle ifitanye isano (hydrodynamic radius) hamwe nubusembwa bwibisubizo muri CAPB - SLES - imvange yo hagati yuruvange rwifashishije rheometrie hamwe nurumuri rukwirakwiza (DLS). Mechanical rheometry itanga ubushishozi bwihindagurika rya microstructural yiyi mvange kandi irashobora kongerwa na microrheologiya optique ikoresheje diffusing wave spectroscopy (DWS) yagura umurongo wa enterineti igerwaho, ifata imbaraga zigihe gito cyane cyane zijyanye no kwidagadura kwa WLM. Muri microrheology ya DWS, impuzandengo yo kwimura kwaduka ya koloidal probe yashizwemo ikurikiranwa mugihe, bigafasha gukuramo moderi ya viscoelastic moduli yumuzenguruko ukikije ikoresheje Stoke rusange - Einstein. Ubu buhanga busaba gusa urugero ntarengwa rw'icyitegererezo bityo bikaba byiza mukwiga ibintu bigoye bifite ibintu bike biboneka, urugero nka poroteyine. Isesengura rya <Δ² Amin et al yerekanye ko imvange ya CAPB - SLES ihuye nubuhanuzi buva mu nyigisho za Cates, byerekana ko kwiyongera kwinshi kwijimye hamwe no kongeramo umunyu kugeza aho umunyu mwinshi ugabanijwe, aho ubusanzwe ubukonje bwagabanutse neza - igisubizo gisanzwe muri sisitemu ya WLM Xu na Amin bakoresheje imvugo ya mashini na DWS kugirango basuzume imiterere ya SLES - CAPB - CCB yerekana ko hashyizweho ibisubizo bya MaxWelli. bishimangirwa na microstructural ibipimo biva mubipimo bya DWS. Dushingiye kuri ubwo buryo, ubushakashatsi bugezweho burahuza imiterere ya rheometrie na micrheologiya ya DWS kugirango isobanure uburyo ivugurura rya microstructural ritwara imyitwarire yimyenda yimvange ya CAPB - SMCT.

Mu rwego rwo kwiyongera kw'ibikoresho byoroheje kandi birambye byo kweza, ubushakashatsi bwakozwe na sulfate idafite sulfate idafite aniyonike bwiyongereye cyane nubwo hari ibibazo bitoroshye. Imiterere yihariye ya molekuliyumu ya sisitemu idafite sulfate akenshi itanga imyirondoro itandukanye ya rheologiya, bigora ingamba zisanzwe zo kongera ububobere nko kunyunyuza umunyu cyangwa polymeric. Kurugero, Yorke n'abandi. yakoze ubushakashatsi ku bundi buryo butari sulfate mu gukora ubushakashatsi ku buryo bunoze bwo kuvura ifuro na rheologiya bivanze na binini na ternary surfactant ivanze irimo alkyl olefin sulfonate (AOS), alkyl polyglucoside (APG), na hydroxysultaine. Ikigereranyo cya 1: 1 cya AOS - sultaine cyerekanaga kogosha-kunanura no kubira ifuro bisa na CAPB - SLES, byerekana imiterere ya WLM. Rajput n'abandi. [26] yasuzumye ikindi kintu cyitwa sulfate kitagira anionic surfactant, sodium cocoyl glycinate (SCGLY), hamwe na co-surfactants (cocamide diethanolamine na lauryl glucoside) binyuze muri DLS, SANS, na rheometrie. Nubwo SCGLY yonyine yashizeho mikorobe yiganjemo serefegitura, iyongerekana rya co-surfactant ryashoboje kubaka mikorobe ikomeye cyane ya micellar morphologie, byoroshye guhinduranya pH.

Nubwo hari iterambere, ugereranije ni bike mubushakashatsi bwibanze kumiterere ya rheologiya ya sisitemu irambye ya sulfate idafite CAPB na taurates. Ubu bushakashatsi bugamije kuziba icyuho mugutanga kimwe mubintu byambere biranga imvugo ya sisitemu ya CAPB - SMCT binary sisitemu. Mugihe gitandukanye muburyo butandukanye, pH, nimbaraga za ionic, turasobanura ibintu bigenga ubukonje bwimitsi hamwe nubukonje. Dukoresheje imashini ya rheometrie na DWS microrheology, turagereranya microstructural reorganisations zishingiye kumyitwarire yimyenda ya CAPB - SMCT. Ibyavuye mu bushakashatsi byerekana isano iri hagati ya pH, igipimo cya CAPB - SMCT, n’urwego rwa ionic mu guteza imbere cyangwa kubuza ishyirwaho rya WLM, bityo bigatanga ubushishozi bufatika bwo guhuza imiterere y’imiterere y’ibicuruzwa birambye bishingiye ku bicuruzwa bikoreshwa mu nganda zitandukanye.