Awọn ohun-ini interfacial alkyl polyglycoside itọsẹ.

Lati ṣe apejuwe awọn ohun-ini interfacial ti awọn itọsẹ alkyl polyglycoside, ẹdọfu dada / awọn iha ifọkansi ni a gbasilẹ ati awọn ifọkansi micelle to ṣe pataki (cmc) ati awọn iye ẹdọfu dada Plateau loke cmc ni a pinnu lati ọdọ wọn. Ẹdọfu interfacial lodi si awọn oludoti awoṣe meji: octyl dodecanol ati decane-ni a ṣewadii bi awọn aye siwaju. Awọn iye cmc ti o gba lati inu awọn iwo wọnyi han ni Nọmba 8. data ti o baamu fun C₁₂ alkyl monoglycoside ati a_{C 12/14}alkyl polyglycoside wa ninu fun lafiwe. A le rii pe alkyl polyglycoside glycerol ethers ati awọn carbonates ni awọn iye cmc ti o ga ju awọn alkyl polyglycosides ti ipari pq afiwera lakoko ti awọn iye cmc ti awọn ethers monobutyl jẹ kekere diẹ sii ju awọn ti alkyl polyglycosides.

Awọn wiwọn ẹdọfu interfacial ni a ṣe pẹlu Kri.iss alayipo tensiometer. Lati ṣe afiwe awọn ipo iṣe, awọn wiwọn ni a ṣe ni omi lile (270 ppm Ca: Mg = 5: ll ni ifọkansi surfactant ti 0.15 g / l ati ni SO Figure 9 fihan lafiwe ti ẹdọfu interfacial ti C.₁₂awọn itọsẹ alkyl polyglycoside lodi si octyl dodecanol. Awọn C₁₂mono[1] butyl ether ni ẹdọfu agbedemeji ti o ga julọ ati nitorinaa iṣẹ aarin ti o kere julọ lakoko ti C₁₂monoglycerol ether jẹ pataki ni ipele ti C₁₂polybutyl ether. Awọn C₁₂alkyl polyglycoside to wa fun lafiwe wa ni ipele ti awọn itọsẹ alkyl polyglycoside meji ti o kẹhin ti mẹnuba. Lapapọ, awọn iye ẹdọfu interfacial lodi si octyl dodecanol jẹ giga diẹ. Eyi tumọ si pe, fun awọn ohun elo ti o wulo, o ṣe pataki lati rii daju pe awọn apopọ surfactant ti a lo ni imuṣiṣẹpọ si awọn epo pola.

Abajade idanwo foomu bi Nọmba 10. ihuwasi foomu ti ọpọlọpọ awọn ethers alkyl polyglycoside monoglycerol ati awọn monocarbonates ni a wọn nipasẹ lafiwe pẹlu C₁₂alkyl polyglycoside fun awọn iye líle omi meji ni laisi ile ti o sanra. Awọn wiwọn ni a ṣe ni ibamu pẹlu DIN 53 902. C₁₀ati C₁₂alkyl polyglycoside monoglycerol ethers ṣe agbejade iwọn foomu ti o tobi ju C₁₂alkyl polyglycoside. Iduroṣinṣin foomu jẹ pataki pupọ ninu ọran ti C₁₂monoglycerol ether ju ninu ọran ti C₁₀ itọsẹ ni 16°dH. Awọn C₁₄alkyl polyglycoside monoglycerol ether ko ni afiwe pẹlu C₁₀ati C₁₂ awọn itọsẹ ninu agbara foomu rẹ ati, lapapọ, awọn oṣuwọn buru ju C₁₂alkyl polyglycoside. Awọn mono-carbonates pẹlu awọn gigun pq alkyl n ti 8 ati 12 jẹ iyatọ nipasẹ awọn iwọn foomu kekere pupọ, bi yoo ṣe nireti itọsẹ hydrophobic alkyl polyglycoside kan.