Ukwenziwa kwee-alkyl polyglycoside glycerol ethers

Ukwenziwa kwe-alkyl polyglycoside glycerol ethers kuqhutywe ngeendlela ezintathu ezahlukeneyo (Umfanekiso2, endaweni yomxube we-alkyl polyglycoside, kuphela i-alkyl monoglycoside eboniswa njenge-educt).Ukwenziwa kwe-etherification ye-alkyl polyglycoside kunye ne-glycerol ngendlela A kuqhubeka phantsi kweemeko ezisisiseko zokusabela.Ukuvulwa kweringi ye-epokside ngendlela ye-B ngokunjalo kwenzeka phambi kwee-catalysts ezisisiseko.Enye indlela yokusabela nge-glycerol carbonate ngendlela ye-C ehamba kunye nokupheliswa kwe-CO₂ kwaye leyo Kuqikelelwa ukuba iqhubekeka nge-epoxide njengenqanaba eliphakathi.

Umxube reaction ke shushu 200℃ kwisithuba seeyure ezisi-7 apho amanzi abunjwe ngokuqhubekayo distilled off ukususa equilibrium kangangoko kunokwenzeka kwicala imveliso.Njengoko kulindelekile, i-alkyl polyglycoside di- kunye ne-triglycerol ethers zenziwe ngaphezu kwe-ether ye-monoglycerol.Enye impendulo yesibini yi-self-condensation ye-glycerol ukwenza i-oligoglycerols ekwaziyo ukusabela nge-alkyl polyglycoside ngendlela efanayo ne-glycerol.Imixholo ephezulu ye-oligomers ephezulu inokunqweneleka ngokupheleleyo kuba iphucula ngakumbi i-hydrophilicity kwaye ke ngoko umzekelo ukunyibilika kwamanzi kweemveliso.Emva kwe-etherification, iimveliso zinokuchithwa emanzini kwaye zixutywe ngendlela eyaziwayo, umzekelo nge-hydrogen peroxide.

Phantsi kwezi meko zokusabela, iqondo le-etherification yeemveliso lizimele kubude bekhonkco lealkyl le-alkyl polyglycoside esetyenzisiweyo.Umzobo3 ubonisa imixholo yepesenti ye-mono-,di- kunye ne-triglycerol ethers kumxube wemveliso ekrwada kwii-alkyl chain ezine ubude.Impendulo kaC₁₂ ialkyl polyglycoside ibonelela ngesiphumo esiqhelekileyo.Ngokwekhromatogram yegesi, imono-,di- kunye netriglycerol ethers zenziwe ngokomlinganiselo omalunga ne-3:2:1.Umxholo opheleleyo we-glycerol ethers ujikeleze i-35%.