Ni iyihe mirimo y'ibiryo bigize eteri ya selulose?

Sobanura:

Ibiryo bigizwe n'ibiryoeteri za selulose

Urubuga rwa tekiniki:

Ubu buvumbuzi bujyanye n'ibiryo birimo eteri za cellulose.

Tekiniki y'inyuma:

Kuva kera bizwi ko bikoresha ether za cellulose mu biryo, cyane cyane ibiryo bitunganywa, kugira ngo binoze imiterere itandukanye nko gukonjesha no gushonga, cyangwa kunoza gukomera mu gihe cyo gukora, gutunganya no gukaranga. Itangazo ry’Abongereza rya GB 2 444 020 rigaragaza imiterere y’ibiryo igizwe na ether ya cellulose itari ionic nka methylcellulose, hydroxypropyl cellulose, cyangwa hydroxypropyl methylcellulose. Methylcellulose na hydroxypropyl methylcellulose bifite "imiterere ya thermos reversible gelling". Bisobanurwa by’umwihariko ko iyo igisubizo cy’amazi cya methylcellulose cyangwa hydroxypropyl methylcellulose gishyushye, itsinda rya methoxy riherereye muri molekile rihura n’amazi, maze rihinduka gel y’amazi. Ku rundi ruhande, iyo gel ivuyemo ikonje, amatsinda ya methoxy akomoka kuri hydrophobic asubizwamo amazi, aho gel isubira ku gisubizo cy’amazi cya mbere.

Patenti y’Uburayi EP I 171 471 igaragaza methylcellulose ifite akamaro kanini mu biryo bikomeye nk’imboga zikomeye, inyama, na soya kubera imbaraga zayo za gel. methylcellulose itanga ubushobozi bwo gukomera no guhuza ibiryo bikomeye, bityo igaha abarya ibiryo byatunganyijwe kumva bamerewe neza. Iyo ishongeshejwe mu mazi akonje (urugero, 5°C cyangwa munsi yayo) mbere cyangwa nyuma yo kuvanga n’ibindi bigize ibiryo, soya ya methylcellulose igera ku bushobozi bwayo bwose bwo gutanga ibiryo bikomeye bifite ubushobozi bwo gukomera no guhuza.

Ariko, mu bihe bimwe na bimwe, gukoresha amazi akonje ntibinogeye uwakoze ibiryo. Bityo, byaba byiza hatanzwe eteri za selulose zitanga ibiryo bikomeye kandi bifatanye neza nubwo eteri za selulose zishongeshejwe mu mazi afite ubushyuhe bungana n'ubw'icyumba.

Hydroxyalkyl methylcellulose nka hydroxypropyl methylcellulose (izwiho kandi kuba ingirakamaro mu biryo) izwiho kugira modulus nke yo kubika ugereranije na methylcellulose. Hydroxyalkyl methylcellulose igaragaza modulus nke yo kubika ntikora gels zikomeye. Ingano nyinshi irakenewe kuri gels zidakomeye (Haque, A; Richardson; Morris, ER, Gidley, MJ na Caswell, DC muri Carbohydrate Polymers22 (1993) p.175; na Haque, A na Morris, ER1nCarbohydrate Polymers22 (1993) p.161).

Iyo hydroxyalkyl methylcellulose nka hydroxypropyl methylcellulose (igaragaza uburyo bwo kubika ibintu bike) ishyizwe mu biryo bikomeye, ubukana bwabyo n'uburyo bihurirana ntabwo bihagije kugira ngo bimwe na bimwe bikoreshwe.

Intego y'ubu buvumbuzi ni ugutanga hydroxyalkyl methylcellulose, cyane cyane hydroxypropyl methylcellulose, igereranywa na hydroxyalkyl methylcellulose izwi, nka hydroxypropyl methylcellulose. Ibinyuranye n'ibyo, ibiryo bikomeye bigizwe neza kandi bifatanye neza.

Intego nyamukuru y’ubu buvumbuzi ni ugutanga hydroxyalkyl methylcellulose, cyane cyane hydroxypropyl methylcellulose, itanga ibiryo bikomeye kandi bifite ubukana bwiza ndetse n’iyo hydroxyalkyl methylcellulose ishongeshejwe mu mazi afite ubushyuhe bw’icyumba.

Igitangaje ni uko byagaragaye kohydroxyalkyl methylcellulose, cyane cyane hydroxypropyl methylcellulose, ishobora gukoreshwa mu gutegura. Ugereranyije n'ibiryo bikomeye, ibiryo bikomeye bizwi bifite ubukana bwinshi cyangwa isano iri hagati yabyo.

Ikindi gitangaje ni uko byagaragaye ko hari hydroxyalkyl methylcellulose, cyane cyane hydroxypropyl methylcellulose, idakenera gushonga mu mazi akonje kugira ngo ibiryo bikomeye bibe bikomeye kandi bifatanye neza.