nkhani

Zotsatira za Alkyl Polyglycosides

Masiku ano, ma alkyl polyglycosides amapezeka mokwanira komanso pamitengo yopikisana kotero kuti kugwiritsidwa ntchito kwawo ngati zida zopangira zida zatsopano zopangira ma surfactants ozikidwa pa alkyl polyglycosides kumadzutsa chidwi chachikulu.Chifukwa chake, ma surfactants a alkyl polyglycosides, mwachitsanzo thovu ndi kunyowetsa, amatha kusinthidwa momwe amafunikira ndikusintha kwamankhwala.

Kutulutsa alkyl glycosides ndi ntchito yomwe ikuchitika kwambiri pakali pano. Pali mitundu yambiri ya zotumphukira za alkyl glycoside pogwiritsa ntchito nucleophilic substitution. Kuphatikiza pakuchita ndi esters kapena ethoxides, zotumphukira za ionic alkyl polyglycoside, monga sulfates ndi phosphates, zitha kupangidwanso. .

Kuyambira ma alkyl polyglycosides okhala ndi unyolo wa alkili(R) wa 8,10,12,14 ndi 16 maatomu a kaboni.8ku C16)ndi digiri yapakati ya polymerization(DP) ya 1.1 mpaka 1.5, zotumphukira zitatu za alkyl polyglycoside zidakonzedwa.Pofuna kufufuza kusintha kwa surfactant katundu hydrophilic kapena hydrophobic m'malo anayambitsa kutsogolera alkyl polyglycoside glycerol ethers.(Chithunzi 1)

Poganizira magulu awo ambiri a hydroxyl, ma alkyl polyglycosides ndi mamolekyu omwe amagwira ntchito mopitilira muyeso.6 atomu.Ngakhale magulu oyambirira a hydroxyl amakhala okhudzidwa kwambiri kuposa magulu achiwiri a hydroxyl, kusiyana kumeneku sikokwanira nthawi zambiri kuti akwaniritse zomwe amasankha popanda magulu oteteza. khama lalikulu losanthula.Kuphatikizika kwa gasi chromatography ndi misa spectrometry kunawonetsedwa kuti ndiyo njira yomwe amakonda kusanthula.Mu kaphatikizidwe ka alkyl polyglycoside zotumphukira, zakhala zothandiza kugwiritsa ntchito alkyl polyglycoside yokhala ndi DP yotsika mtengo wa 1.1, mu zotsatirazi zomwe zimatchedwa alkyl monoglycosides.Izi zimapangitsa kuti pakhale zosakaniza zocheperako zovuta komanso chifukwa cha kusanthula kosavuta.

 


Nthawi yotumiza: Feb-23-2021