O le cellulose o le polymer masani sili ona tele i le natura. O se fa'aputuga polymer laina feso'ota'i e le D-glucose e ala i fusi β-(1-4) glycosidic. O le tikeri o le polymerization o cellulose e mafai ona oʻo atu i le 18,000, ma le mamafa mole mole e mafai ona oʻo atu i le tele o miliona.
O le cellulose e mafai ona gaosia mai le pulupulu laupapa poʻo le cotton, lea e le mafai ona solu i le vai, ae faʻamalosia i le alkali, faʻamalosia i le methylene chloride ma le propylene oxide, fufulu i le vai, ma faʻagogo ina ia maua ai le vai-soluble methyl cellulose (MC) ma hydroxypropyl methylcellulose (HPMC), o lona uiga, o le methoxy ma le hydroxypropoxy e faʻaaogaina e sui ai vaega o le hydroxyl i le C2, C3 ma le C6 tulaga o le kulukose e fausia ai le ethers cellulose nonionic.
Methyl cellulose e leai se manogi, pa'epa'e i le kulimi pa'epa'e pa'epa'e pa'epa'e pa'epa'e foliga, ma o le pH o le vaifofo i le va o le 5-8.
O le methoxyl anotusi o le methylcellulose o loʻo faʻaaogaina e fai ma meaʻai faʻaopoopo e masani lava i le va o le 25% ma le 33%, o le tikeri tutusa o le suitulaga o le 17-2.2, ma le tikeri faʻataʻitaʻiga o le suitulaga i le va o le 0-3.
I le avea ai o se meaʻai faaopoopo, o le methoxyl anotusi o le hydroxypropyl methylcellulose e masani lava i le va o le 19% ma le 30%, ma o le hydroxypropoxyl anotusi e masani lava i le va o le 3% ma le 12%.
Uiga fa'agaioiga
gel e mafai ona toe suia
Methylcellulose/ Hydroxypropylmethylcellulose o loʻo i ai mea faʻafefe faʻafefeteina.
Methyl cellulose/hydroxypropyl methyl cellulose e tatau ona solo i vai malulu po'o vai vevela masani. Pe a vevela le vaifofo vai, o le a faʻaauau pea ona faʻaitiitia le viscosity, ma o le a tupu le gelation pe a oʻo i se vevela. I le taimi lea, methyl cellulose/hydroxypropyl methyl cellulose O le vaifofo manino o le propyl methylcellulose na amata ona liua i le paʻepaʻe susu susu, ma faʻateleina le viscosity manino.
Ole vevela lea e ta'ua ole vevela ole amataga ole vevela. A'o maalili le gel, e vave ona pa'u le viscosity. Ma le mea mulimuli, o le viscosity curve pe a malulu e ogatasi ma le uluai vevela vevela curve viscosity, liliu le gel i se vaifofo, liliu le vaifofo i se gel pe a vevela, ma le faagasologa o le toe liliu i se vaifofo pe a maeʻa malulu e toe faʻafoʻi ma toe fai.
O le Hydroxypropyl methylcellulose o loʻo i ai le maualuga o le vevela o le faʻafefe o le vevela nai lo le methylcellulose ma le malosi ole gel.
Pfaatinoga
1. Meatotino fai ata tifaga
O ata tifaga na faia e le methylcellulose/hydroxypropylmethylcellulose poʻo ata o loʻo iai uma e mafai ona puipuia lelei le femalagaiga o le suauʻu ma le gau o le vai, ma faʻamautinoa ai le mautu o le fausaga o meaʻai.
2. Emulsifying meatotino
Methylcellulose/Hydroxypropylmethylcellulose e mafai ona faʻaitiitia ai le vevesi i luga ole laiga ma faʻaitiitia le faʻaputuina o gaʻo mo le faʻamautuina lelei o le emulsion.
3. Puleaina le gau o le vai
Methylcellulose/Hydroxypropylmethylcellulose e mafai ona pulea lelei le femalaga'iga o mea'ai mai le malulu i le vevela masani, ma mafai ona fa'aitiitia le fa'aleagaina, fa'aaisa aisa ma suiga o mea'ai e mafua mai i le pusaaisa.
4. Fa'atinoga fa'apipi'i
Methylcellulose/Hydroxypropylmethylcellulose o lo'o fa'aogaina i le aofa'i lelei e atia'e ai le malosi sili ona lelei a'o fa'atumauina le susu ma le fa'asa'oina o le tofo.
5. Fa'atuai le fa'amamaina o le fa'atinoga
O le faʻaaogaina o le methylcellulose / hydroxypropylmethylcellulose e mafai ona faʻaitiitia ai le pamuina o le viscosity o meaʻai i le taimi o le vevela, ma faʻaleleia atili ai le gaosiga lelei. Faʻaitiitia le faʻafefe o le pusa ma mea faigaluega, faʻavavevave taimi taʻamilosaga, faʻaleleia le lelei o le vevela, ma faʻaitiitia le faʻavaeina o tupe.
6. Fa'atosina fa'atinoga
Methylcellulose / Hydroxypropylmethylcellulose e mafai ona faʻaaogaina faʻatasi ma le masoa e maua ai se aafiaga synergistic, lea e mafai ona faʻateleina le viscosity e oʻo lava i se tulaga maualalo faʻaopoopo.
7. E mautu le vaifofo i lalo ole tulaga oona ma le ava malosi
O vaifofo o le Methylcellulose/Hydroxypropylmethylcellulose e mautu i lalo i le pH 3 ma e mautu lelei i vaifofo o lo'o iai le ava malosi.
Fa'aaogāina ole methyl cellulose ile mea'ai
Methyl cellulose o se ituaiga e le-ionic cellulose ether faia e ala i le faaaogaina cellulose faalenatura e pei o mea mata ma suia vaega hydroxyl i le kulukose anhydrous iunite i cellulose ma vaega methoxy. O lo'o i ai le fa'atumauina o le vai, mafiafia, emulsification, fa'avae ata, fetuutuuna'i Fa'alautele le pH ma gaioiga i luga ma isi galuega.
O lona uiga sili ona fa'apitoa o le fa'afefeteina e mafai ona toe fa'afo'isia, o lona uiga, o lona vaifofo vai e fai ai se gel pe a fa'amafanafanaina, ma toe fo'i i se vaifofo pe a fa'amalieina. E masani ona faʻaaogaina i meaʻai tao, meaʻai falai, meaʻai suamalie, sosi, sou, meainu, ma essences. ma lole.
O le super gel i le methyl cellulose o loʻo i ai le malosi o le gel e sili atu nai lo le faatoluina o gels thermal methyl cellulose masani, ma o loʻo i ai mea faʻapipiʻi sili ona malosi, faʻamauina o le vai ma foliga faʻamaumau meatotino.
E fa'ataga ai mea'ai toe fa'afou e fa'atumauina ai a latou mea'ai mautu ma le suasu o le gutu i le taimi ma le umi o taimi pe a uma ona toe fa'amafanafana. O fa'aoga masani o mea'ai vave fa'a'aisa, mea'ai mea'ai, aano o manu fa'afou, i'a ma mea'ai sami ma sosisi maualalo ga'o.
Taimi meli: Tes-12-2022