Taulai atu ile Cellulose ethers

O le a le hydroxypropyl methylcellulose e maualalo le sui?

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 faanatura o loʻo maua i puipui sela o laʻau. 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 biodegradation 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 aga'i i luma fa'atekonolosi ma le fa'aauau, o le fa'aauauina o su'esu'ega ma le fa'aleleia atili o le L-HPMC ma fa'apena fa'apena e ono fa'ata'atia ai le lumana'i o mea tau fa'asaienisi ma faiga fa'apisinisi.


Taimi meli: Tes-26-2023
WhatsApp Online Chat!