Samar da Hydroxypropyl Methylcellulose (HPMC) ya ƙunshi matakai masu rikitarwa da yawa waɗanda ke canza cellulose zuwa polymer mai ɗimbin yawa tare da kewayon aikace-aikace a masana'antu daban-daban.Wannan tsari yawanci yana farawa ne tare da fitar da cellulose daga tushen tushen shuka, biye da gyare-gyaren sinadarai don gabatar da ƙungiyoyin hydroxypropyl da methyl akan kashin bayan cellulose.Sakamakon HPMC polymer yana ba da kaddarori na musamman kamar kauri, ɗaure, ƙirƙirar fim, da riƙe ruwa.Bari mu zurfafa cikin cikakken tsarin samar da HPMC.
1. Samar da albarkatun kasa:
Babban albarkatun kasa don samar da HPMC shine cellulose, wanda aka samo shi daga tushen tushen shuka irin su ɓangaren litattafan almara, auduga, ko wasu tsire-tsire masu fibrous.An zaɓi waɗannan tushen bisa dalilai kamar tsabta, abun cikin cellulose, da dorewa.
2. Ciwon Cellulose:
Ana fitar da Cellulose daga zaɓaɓɓen tushen tushen shuka ta hanyar tsarin injiniyoyi da sinadarai.Da farko dai, ana yin riga-kafi, wanda zai iya haɗawa da wankewa, niƙa, da bushewa don cire ƙazanta da danshi.Sa'an nan kuma, yawanci ana bi da cellulose da sinadarai irin su alkalis ko acid don karya lignin da hemicellulose, barin bayan zaren cellulose masu tsabta.
3. Etherification:
Etherification shine mabuɗin tsarin sinadarai a cikin samar da HPMC, inda aka gabatar da ƙungiyoyin hydroxypropyl da methyl akan kashin bayan cellulose.Wannan matakin yana da mahimmanci don gyara kaddarorin cellulose don cimma ayyukan da ake so na HPMC.Etherification yawanci ana aiwatar da shi ta hanyar amsawar cellulose tare da propylene oxide (na ƙungiyoyin hydroxypropyl) da methyl chloride (na ƙungiyoyin methyl) a gaban masu haɓaka alkali a ƙarƙashin yanayin sarrafawa na zafin jiki da matsa lamba.
4. Nunawa da Wankewa:
Bayan etherification, da dauki cakuda ne neutralized don cire duk sauran alkali catalysts da daidaita pH matakin.Ana yin wannan yawanci ta hanyar ƙara acid ko tushe dangane da takamaiman yanayin halayen.Ana biye da tsaka-tsaki ta hanyar wankewa sosai don kawar da samfurori, sinadarai marasa ƙarfi, da ƙazanta daga samfurin HPMC.
5. Tace da bushewa:
A neutralized da wanke HPMC bayani jurewa tacewa don raba m barbashi da cimma wani bayyananne bayani.Tace na iya ƙunsar hanyoyi daban-daban kamar su tacewa ko centrifugation.Da zarar an fayyace maganin, an bushe shi don cire ruwa kuma a sami HPMC a cikin foda.Hanyoyin bushewa na iya haɗawa da bushewar feshi, bushewar gado mai ruwa, ko bushewar ganga, dangane da girman barbashi da ake so da kaddarorin samfurin ƙarshe.
6. Nika da Sieving (Na zaɓi):
A wasu lokuta, da busassun HPMC foda na iya sha ƙarin aiki kamar nika da sieving cimma takamaiman barbashi masu girma dabam da kuma inganta flowability.Wannan matakin yana taimakawa samun HPMC tare da daidaitattun halaye na jiki wanda ya dace da aikace-aikace daban-daban.
7. Kula da inganci:
A cikin tsarin samarwa, ana aiwatar da tsauraran matakan kulawa don tabbatar da tsabta, daidaito, da aikin samfurin HPMC.Siffofin sarrafa ingancin ƙila sun haɗa da danko, rarraba girman barbashi, abun ciki na danshi, matakin maye gurbin (DS), da sauran kaddarorin da suka dace.Dabarun nazari kamar ma'aunin danko, spectroscopy, chromatography, da microscopy galibi ana amfani da su don kimanta inganci.
8. Marufi da Ajiya:
Da zarar samfurin HPMC ya wuce gwaje-gwajen sarrafa inganci, ana tattara shi cikin kwantena masu dacewa kamar jakunkuna ko ganguna kuma an yi masa lakabi bisa ga ƙayyadaddun bayanai.Marufi da ya dace yana taimakawa kare HPMC daga danshi, gurɓatawa, da lalacewar jiki yayin ajiya da sufuri.Ana adana fakitin HPMC a cikin yanayin sarrafawa don kiyaye kwanciyar hankali da rayuwa har sai an shirya don rarrabawa da amfani.
Aikace-aikace na HPMC:
Hydroxypropyl Methylcellulose yana samun amfani mai yawa a masana'antu daban-daban ciki har da magunguna, gini, abinci, kayan kwalliya, da samfuran kulawa na sirri.A cikin magunguna, ana amfani da shi azaman ɗaure, rarrabuwa, tsohon fim, da wakili mai dorewa a cikin ƙirar kwamfutar hannu.A cikin gine-gine, ana amfani da HPMC azaman mai kauri, wakili mai riƙe ruwa, da gyaran gyare-gyare a cikin turmi na tushen siminti, filasta, da adhesives na tayal.A cikin abinci, yana aiki azaman mai kauri, mai ƙarfi, da emulsifier a cikin samfura kamar miya, miya, da kayan zaki.Bugu da ƙari, ana amfani da HPMC a cikin kayan kwalliya da samfuran kulawa na sirri don ƙirƙirar fim ɗin sa, mai daɗaɗawa, da kaddarorin gyaran rubutu.
La'akari da Muhalli:
Samar da HPMC, kamar yawancin hanyoyin masana'antu, yana da tasirin muhalli.Ana ƙoƙarin inganta ɗorewa na samar da HPMC ta hanyar ayyuka kamar yin amfani da hanyoyin samar da makamashi mai sabuntawa, inganta amfani da albarkatun ƙasa, rage yawan sharar gida, da aiwatar da fasahohin samar da yanayi.Bugu da ƙari, haɓakar HPMC na tushen halittu wanda aka samo daga tushe mai ɗorewa kamar algae ko fermentation na microbial yana nuna alƙawarin rage sawun muhalli na samar da HPMC.
samar da Hydroxypropyl Methylcellulose ya ƙunshi jerin matakan da suka fara daga hakar cellulose zuwa gyare-gyaren sinadarai, tsarkakewa, da kula da inganci.Sakamakon HPMC polymer yana ba da ayyuka masu yawa kuma yana samun aikace-aikace a masana'antu daban-daban.Ƙoƙarin ɗorewa da alhakin muhalli shine ke haifar da sabbin abubuwa a cikin samar da HPMC, da nufin rage tasirin muhalli yayin saduwa da haɓakar buƙatun wannan nau'in polymer.
Lokacin aikawa: Maris-05-2024