Hydroxypropylmethylcellulose (HPMC) wani nau'in cellulose ne wanda ake amfani da shi sosai a masana'antu daban-daban. Babban amfani da HPMC sune masu kauri, stabilizers da emulsifiers a cikin masana'antar abinci, magunguna da kayan kwalliya. Hakanan ana amfani da HPMC a fannin gine-gine azaman ƙari na siminti, azaman sutura don allunan da capsules, kuma azaman maganin ido. Babban albarkatun kasa na HPMC sune cellulose da sinadaran reagents.
Cellulose:
Cellulose shine babban albarkatun kasa don samar da HPMC. Cellulose shine polymer na halitta da ake samu a cikin ganuwar tantanin halitta kuma shine mafi yawan polymer na halitta a duniya. Abubuwan sinadarai na cellulose sun yi kama da HPMC, wanda ya sa ya zama kyakkyawan kayan da aka yi don samar da HPMC. Ana samun cellulose daga tushe iri-iri, ciki har da itace, auduga, da tsire-tsire iri-iri.
Mafi yawan tushen cellulose da ake amfani dashi don samar da HPMC shine ɓangaren litattafan almara na itace. Ana samun ɓangaren litattafan almara daga itace mai laushi irin su spruce, Pine da fir. Ana kula da ɓangaren litattafan almara ta hanyar sinadarai don rushe lignin da hemicellulose, yana barin cellulose mai tsabta. Sai a wanke tsantsar cellulose a wanke a wanke don cire duk wani datti.
Cellulose da aka yi amfani da shi don samar da HPMC dole ne ya kasance mai inganci kuma dole ne a bi matakan kula da inganci don tabbatar da tsabtar cellulose. Tsaftar cellulose yana da mahimmanci saboda ƙazanta na iya shafar kaddarorin samfurin ƙarshe.
Chemical reagents:
Samar da HPMC yana buƙatar amfani da reagents daban-daban na sinadarai. Chemical reagents da ake amfani da su wajen samar da HPMC sun hada da propylene oxide, methyl chloride, sodium hydroxide, hydrochloric acid, da dai sauransu.
Ana amfani da Propylene oxide don samar da hydroxypropyl cellulose (HPC), wanda aka amsa da methyl chloride don samar da HPMC. HPC yana amsawa tare da methyl chloride don maye gurbin wasu rukunin hydroxyl akan sarkar cellulose tare da methoxy da ƙungiyoyin hydroxypropyl, don haka suna samar da HPMC.
Ana amfani da sodium hydroxide a cikin samar da HPMC don ƙara ƙimar pH na maganin amsawa don taimakawa narke cellulose.
A lokacin aikin samar da HPMC, ana amfani da acid hydrochloric don daidaita ƙimar pH na maganin amsawa.
Chemical reagents amfani da HPMC samarwa dole ne na high tsarki, da dauki yanayi dole ne a sarrafa a hankali don tabbatar da ingancin samfurin karshe.
a ƙarshe:
Babban albarkatun kasa na HPMC sune cellulose da sinadaran reagents. Cellulose, wanda aka samo daga tushe iri-iri da suka haɗa da itace, auduga, da tsire-tsire iri-iri, shine ainihin albarkatun ƙasa don samar da HPMC. Chemical reagents da ake amfani da su a samar da HPMC sun hada da propylene oxide, methyl chloride, sodium hydroxide da hydrochloric acid. Samar da HPMC yana buƙatar tsauraran matakan kulawa don tabbatar da tsabtar albarkatun ƙasa da ingancin samfurin ƙarshe. HPMC ana amfani dashi sosai a masana'antu daban-daban kuma yana da aikace-aikace iri-iri saboda kaddarorinsa na musamman.
Lokacin aikawa: Satumba-06-2023