Ukwenziwa kwe-alkyl polyglycoside butyl ethers

Impahla edingeka njalo ye-alkyl polyglycosides iwukuba ugwebu oluthuthukisiwe.Nokho, ezinhlelweni eziningi, lesi sici sibhekwa njengesibi.Ngakho-ke, kukhona futhi isithakazelo ekuthuthukiseni okuphuma ku-alkyl polyglycoside okuhlanganisa ukusebenza okuhle kokuhlanza nokuthambekela okuncane kuphela kwegwebu.Ngokucabangela lo mgomo, i-alkyl polyglycoside butyl ether yahlanganiswa.Kuyaziwa ezincwadini ukuthi i-alkyl glycosides ingafakwa nge-alkyl halides noma i-dimethyl sulfate kuzixazululo ezinamanzi ane-alkali.

Esikalini sezimboni, ukusabela esixazululweni samanzi kuyinto embi ngoba imikhiqizo egxilile engenamanzi ayikwazi ukutholwa ngaphandle kwezinyathelo ezengeziwe zokusebenza.Ngakho-ke, inqubo engenamanzi yasungulwa, evezwe kuMfanekiso 6. I-alkyl polyglycoside iqala ukwethulwa ku-reactor ngokudlulela kwe-butyl chloride futhi ishise ku-80℃.Ukusabela kuqalwa ngokungezwa kwe-potassium hydroxide njenge-catalyst.Ekuqedeni ukusabela, ingxube yokusabela iyancipha, i-potassium chloride precipitate iyahlungwa futhi i-butyl chloride eyeqile iyachithwa.Umkhiqizo wakhiwe ngama-alkyl polyglycosides ahlukahlukene kanye nama-alkyl polyglycoside butyl ethers.Ngokokuhlaziywa kwe-GC, isilinganiso se-alkyl monoglycoside, i-alkyl mono-glycoside monobutyl ether ne-alkyl monoglycoside polybutyl ether ngu-1:3:1.5.

Inkambo yokusabela ye-etherification ye-C₁₂I-alkyl polyglycoside iboniswa kuMfanekiso 7. Okuqukethwe kwe-monoglycoside kuyehla kusuka cishe ku-70% kuya ngaphansi kwama-20%.Ngesikhathi esifanayo, inani le-monoether likhuphukela ku-50%.Uma kukhona i-monobutyl ether eyengeziwe, ama-ether e-polybutyl amaningi angakhiwa kusukela lapho.Kuphela ngemva kwamahora angu-24 lapho kukhona ukwakheka okubalulekile kwe-polybutyl ethers.Njengoba kulindelekile, okuqukethwe kwe-polyethers kuyanda ngokukhula kwesikhathi sokuphendula.Nokho, inani elingu-20% alidluliwe.Idigri ye-etherification emaphakathi ngu-1 ~ 3 butyl ngeyunithi ngayinye ye-alkyl glycoside.Umthelela wokusabela we-C₁₂I-alkyl glycoside yayingcono kakhulu.Esimeni se-N =8 noma 16 i-alkyl polyglycoside butyl ether, imiphumela yawohloka.

Kulezi zibonelo ezintathu kuyacaca ukuthi okuphuma kokunye okuphuma ku-alkyl glycosides kutholakala kalula.Ukusetshenziswa okukhethekile okulindelekile futhi kuncike ezintweni ezisebenza phezulu zalezi ziphuma.