Waa maxay Hydroxypropyl methylcellulose?

1. Hordhac

Hydroxypropyl methylcellulose (HPMC) waa polymer biyood si weyn loo isticmaalo oo laga soo qaatay cellulose. Waa budo aan ion-aan lahayn, ur lahayn, aan dhadhamin, caddaan ama budo caddaan ah oo si weyn looga isticmaalo warshadaha cuntada, daawooyinka, iyo warshadaha qurxinta. HPMC waxay leedahay codsiyo kala duwan oo kala duwan, oo ay ku jiraan dhumucdi, emulsifying, hakinta, xasilinta, iyo samaynta filimada. Waxa kale oo loo istcimaalaa sidii xidhe, saliidayn, iyo kala furfurid soo saarista kaniiniyada iyo kaabsalka.

2. Agabka ceeriin

Walaxda ceeriin ee ugu weyn ee loo isticmaalo in lagu soo saaro HPMC waa cellulose, kaas oo ah polysaccharides ka kooban unugyo gulukoos. Cellulose waxaa laga heli karaa ilo kala duwan, oo ay ku jiraan saxarka alwaax, suuf, iyo fiilooyinka kale ee dhirta. Cellulose ayaa markaa lagu daaweeyaa hannaan kiimiko si loo soo saaro hydroxypropyl methylcellulose.

3. Habka wax-soo-saarka

Habka wax soo saarka ee HPMC waxay ku lug leedahay dhowr tillaabo. Marka hore, cellulose waxaa lagu daaweeyaa alkali, sida sodium hydroxide, si loo sameeyo cellulose alkali ah. cellulose-ka alkali-ka ah ayaa markaa lagu falceliyaa methyl chloride iyo propylene oxide si loo sameeyo hydroxypropyl methylcellulose. Hydroxypropyl methylcellulose ayaa markaa la nadiifiyaa oo la qalajiya si ay u sameeyaan budo cad.

4. Xakamaynta tayada

Xakamaynta tayada waa qayb muhiim ah oo ka mid ah habka wax soo saarka ee HPMC. Tayada badeecada waxaa lagu go'aamiyaa nadiifnimada cellulose, heerka beddelka kooxda hydroxypropyl, iyo heerka beddelka kooxda methyl. Nadiifinta cellulose waxaa lagu go'aamiyaa tijaabinta viscosity ee xalka, halka heerka beddelka lagu go'aamiyo tijaabinta heerka hydrolysis ee hydroxypropyl methylcellulose.

5. Baakadaha

HPMC waxaa badanaa lagu baakadeeyaa bacaha ama durbaannada. Bacaha waxaa badanaa laga sameeyaa polyetylen ama polypropylene, halka durbaanadu ay badanaa ka samaysan yihiin bir ama caag. Qalabka baakadaha waa in la doortaa si loo hubiyo in alaabta laga ilaaliyo qoyaanka iyo arrimaha kale ee deegaanka.

6. Kaydinta

HPMC waa in lagu kaydiyaa meel qabow oo qalalan, kana fog iftiinka qoraxda iyo meelaha kale ee kulaylka. Alaabta sidoo kale waa in laga ilaaliyaa qoyaanka iyo arrimaha kale ee deegaanka.

7. Gabagabo

HPMC waa polymer biyo-milmi leh oo si weyn loo isticmaalo oo laga soo qaatay cellulose. Waxaa loo isticmaalaa warshado kala duwan, oo ay ku jiraan cuntada, daawooyinka, iyo warshadaha qurxinta. Habka wax soo saarka ee HPMC waxay ku lug leedahay dhowr tillaabo, oo ay ku jiraan daaweynta cellulose leh alkali, falcelinta cellulose alkali leh methyl chloride iyo propylene oxide, iyo nadiifinta iyo qalajinta ee methylcellulose hydroxypropyl. Xakamaynta tayada waa qayb muhiim ah oo ka mid ah habka wax soo saarka, alaabtana waa in lagu kaydiyaa meel qabow oo qallalan, kana fog qorraxda tooska ah iyo ilaha kale ee kulaylka.