Njirimara physicochemical nke Alkyl Polyglycosides-omume nke oge

Usoro ọnụọgụ abụọ

Eserese usoro nke C12-14 alkyl polyglycoside (C12-14 APG)/ usoro mmiri dị iche na nke APG dị mkpụmkpụ. (Foto nke 3). N'ebe okpomọkụ dị ala, a na-emepụta mpaghara siri ike / mmiri mmiri n'okpuru ebe Krafft, ọ karịrị oke ịta ahụhụ. Site na mmụba nke okpomọkụ, usoro ahụ na-agbanwe n'ime usoro mmiri mmiri isotropic. N'ihi na kristal na-alaghachi azụ azụ ruo oke, oke a na-agbanwe ọnọdụ na oge nchekwa. Na obere mkpokọta, usoro mmiri isotropic na-agbanwe n'elu 35 ℃ n'ime mpaghara akụkụ abụọ nke usoro mmiri mmiri abụọ, dịka a na-ahụkarị ya na nonionic surfactants. N'ihe dị elu karịa 60% site n'ịdị arọ, a na-emepụta usoro nke mmiri kristal mmiri na okpomọkụ niile. Ọ bara uru ịkọwa na na mpaghara otu mpaghara isotropic, enwere ike ịhụ birefringence na-asọpụta doro anya mgbe ntinye uche dị ntakịrị karịa oge agbazere, wee na-apụ n'anya ngwa ngwa mgbe usoro nhazi ahụ gasịrị. Agbanyeghị, ọ nweghị mpaghara polyphase ka ekewapụrụ na ngalaba L1. N'ime oge L1, mpaghara ọzọ na-adịghị ike na-agba ọsọ birefringence dị nso na uru kacha nta nke oghere mmiri/mmiri miscibility.
Nnyocha phenomenological n'ime nhazi nke usoro kristal mmiri bụ Platz et al. Iji ụzọ ndị dị ka polarization microscope. N'ịgbaso nyocha ndị a, mpaghara atọ dị iche iche ka a na-atụle na ngwọta C12-14 APG gbadoro anya: Lα_{l ,}Lα_lhna Lah. Enwere textures atọ dị iche iche dịka microscopy polarization si dị.
Mgbe echekwara ya ogologo oge, usoro kristal mmiri na-ahụkarị na-etolite mpaghara pseudoisotropic gbara ọchịchịrị n'okpuru ìhè polarized. Ekewapụrụ mpaghara ndị a n'ụzọ doro anya na mpaghara ndị nwere nnukwu ihe. Oge Lαh, nke na-eme n'ime oke ntinye uche nke mpaghara mmiri kristal mmiri, na oke okpomọkụ, na-egosi ụdị textures ahụ. Ọ dịghị mgbe a na-ahụ textures Schlieren, ọ bụ ezie na ike birefringent mmanu streaks na-enwekarị. Ọ bụrụ na ihe nlele nwere usoro Lαh dị jụụ iji chọpụta ebe Krafft, ederede na-agbanwe n'okpuru ọnọdụ okpomọkụ. Mpaghara pseudoisotropic na eriri mmanu nke akọwapụtara nke ọma na-apụ n'anya. Na mbụ, ọ dịghị C12-14 APG crystallizes, kama, a ọhụrụ lyotropic usoro na-egosi na ọ bụ na-adịghị ike birefringence na-etolite. N'ihe dị oke elu, usoro a na-agbasa ruo oke okpomọkụ. N'ihe banyere alkyl glycosides, ọnọdụ dị iche iche na-apụta. All electrolytes, ma e wezụga sodium hydroxide, mere ka mbelata dị ukwuu n'ígwé ojii. Ihe dị iche iche nke electrolytes bụ maka usoro dị elu karịa nke alkyl polyethylene glycol ethers. .Sprisingly, e nwere nanị nnọọ nta iche n'etiti onye electrolytes.The mgbakwunye nke alkali budata belata cloudiness. Iji kọwaa ọdịiche omume dị n'etiti alkyl polyglycol ethers na alkyl polyglycol ethers, a na-eche na otu OH na-agbakọba na glucose unit ejirila ethylene oxide otu ụdị hydration dị iche iche. Mmetụta dị ukwuu nke electrolytes na Alkyl polyglycol ethers na-egosi na enwere ụgwọ n'elu alkyl polyglycoside micelles, ebe alkyl polyethylene glycol ethers na-eche na ọ dịghị ụgwọ.
Ya mere, alkyl polyglycosides na-akpa àgwà dị ka ngwakọta nke alkyl polyglycol ethers na anionic surfactants. Ọmụmụ nke mmekọrịta dị n'etiti alkyl glycosides na anionic ma ọ bụ cationic surfactants na mkpebi siri ike na emulsion na-egosi na alkyl glycosides micelles nwere ụgwọ na-adịghị mma n'elu pH. nso nke 3 ~ 9. N'ụzọ dị iche, ụgwọ nke alkyl polyethylene glycol ether micelles adịghị mma ma ọ bụ dị nso na efu. Akọwabeghị nke ọma ihe kpatara alkyl glycoside micelles na-adịghị mma.