O le hydroxypropylmethylcellulose (L-HPMC) ua suia maualalo o se polymer sili ona lelei ma faʻaoga i le tele o alamanuia, e aofia ai vailaʻau, meaʻai, fausiaina, ma mea teuteu.O lenei tuufaatasiga e maua mai i le cellulose, o se polymer masani o loʻo maua i puipui sela o laau.Ina ia malamalama i lalo ole hydroxypropyl methylcellulose, e tatau i se tasi ona talepe i lalo lona igoa ma suʻesuʻe ona meatotino, faʻaoga, faʻasologa, ma aʻafiaga i pisinisi eseese.
1. Malamalama i igoa:
Hydroxypropyl methylcellulose (HPMC):
O le cellulose o se ga'o ga'o lavelave e fausia i iunite kulukose ma o le vaega autu lea o puipui sela o la'au.
O le Hydroxypropyl methylcellulose o se ituaiga o cellulose ua uma ona togafitia e faʻafeiloaʻi ai vaega o le hydroxypropyl ma le methyl.O lenei suiga e faʻaleleia ai lona solubility ma isi mea manaʻomia.
Suiga maualalo:
Fa'asino i le tulaga maualalo o le suitulaga pe a fa'atusatusa i isi mea e maua mai i le cellulose, e pei o mea e sili ona suitulaga e pei ole hydroxyethyl cellulose (HEC).
2. Fa'atinoga:
Solubility:
L-HPMC e sili atu le solu i le vai nai lo le cellulose.
Viscosity:
O le viscosity o L-HPMC solutions e mafai ona faʻatonutonuina e ala i le fetuʻunaʻi o le tikeri o le suitulaga, faʻamaonia mo le tele o faʻaoga.
Fausia ata tifaga:
E mafai e le L-HPMC ona fai ni ata manifinifi, e fa'aoga ai i le tele o mea fa'apipi'i.
Malosi o le vevela:
O le polymer e masani ona faʻaalia lelei le mautu o le vevela, e saofagā i lona faʻaogaina i faiga eseese.
3. Fa'asologa:
Etherification:
O le tuufaatasiga e aofia ai le etherification o le cellulose ma le propylene oxide e faʻafeiloaʻi ai vaega hydroxypropyl.
O le methylation mulimuli ane ma le methyl chloride e faʻaopoopoina vaega methyl i le cellulose tua.
Ole maualuga ole suitulaga e mafai ona pulea ile taimi ole fa'asologa e maua ai mea e mana'omia.
4. Fa'aoga:
A. Alamanuia tau vailaau:
Mea fa'apipi'i ma fa'amavae:
E fa'aaogaina e fai ma mea fa'apipi'i i fuala'au e fa'apipi'i fa'atasi ai mea.
Fa'atino e pei o se fa'ama'i e una'ia ai le malepelepe o papa i totonu o le fa'amamago.
Fa'asa'olotoga tumau:
L-HPMC o lo'o fa'aogaina ile fa'atonu-fa'asa'oloto, fa'atagaina le fa'amatu'u fa'agasolo malie ile taimi.
Sauniuniga autu:
E maua i kulimi, gels ma suauu, e maua ai le viscosity ma faʻaleleia le faʻasalalauina o fua faʻatatau.
B. Alamanuia tau taumafa:
Mafiafia:
Fa'ateleina le viscosity o mea'ai ma fa'aleleia atili le ga'o ma le gutu.
fa'amautu:
Fa'aleleia le mautu o emulsion ma taofiga.
Fausia ata tifaga:
Ata ata mo le afifiina o meaai.
C. Alamanuia faufale:
Omea ma sima:
Fa'aaogaina e fai ma vai fa'amauina i mea fa'avae sima.
Faʻaleleia le faʻaogaina ma le pipii o mea faʻapipiʻi.
D. Teuga:
oloa tau tausiga a le tagata lava ia:
E maua i kulimi, lotion ma shampoos e fesoasoani e faʻaleleia le faʻaogaina ma le mautu.
Fa'aaogaina e fai ma sui e fai ata i mea teuteu.
5. Vaavaaiga:
FDA Faamaonia:
L-HPMC e masani ona fa'ailoa saogalemu (GRAS) e le US Food and Drug Administration (FDA).
O le tausisia o tulaga fa'atonutonu e taua tele mo lona fa'aogaina i vaila'au ma mea'ai.
6. Lu'itau ma fa'amoemoega i le lumana'i:
Biodegradability:
E ui lava o polymers e fa'avae i le cellulose e masani ona manatu e mafai ona fa'aleagaina, o le tele o le fa'aleagaina o mea e maua mai i le cellulose e mana'omia ai nisi su'esu'ega.
Mauaina:
Ole su'esu'eina gafataulimaina o mea mata'utia ma auala e fa'aleleia ai le si'osi'omaga o vaega ia o lo'o fa'aauau pea ona taula'i.
7. Fa'ai'uga:
O le hydroxypropyl methylcellulose ua suia maualalo e faʻaalia ai le atamai o le fesuiaiga o vailaʻau i le faʻaogaina o meatotino o polymers faʻanatura.O ona fa'aoga eseese i alamanuia eseese ua fa'ailoa mai ai lona taua i le gaosiga fa'aonaponei.A'o fa'atūlemu le fa'atekonolosi ma le fa'aauauina, o le fa'aauauina o su'esu'ega ma le fa'aleleia o le L-HPMC ma fa'apena fa'apena e ono fa'ata'atia ai le lumana'i o mea fa'asaienisi ma faiga fa'apisinisi.
Taimi meli: Tes-26-2023