iroyin

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 aC 12/14alkyl 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.

Nọmba8, awọn iye cmc ti awọn itọsẹ polyglycoside

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.

Nọmba 9, Idinku ti ẹdọfu interfacial lodi si octyl dodecanol

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.

Nọmba 10, Iye foomu ti awọn itọsẹ alkyl polyglycoside


Akoko ifiweranṣẹ: Oṣu Kẹrin Ọjọ 26-2021