Hydroxypropylmethylcellulose (HPMC) polymer roba ce da aka samu daga cellulose. A matsayin thickener, emulsifier da stabilizer, ana amfani dashi sosai a cikin magunguna, abinci da masana'antun kwaskwarima. Hakanan ana amfani da HPMC a cikin kayan gini kamar siminti, turmi da gypsum don haɓaka aiki da riƙe ruwa. A cikin wannan labarin, za mu tattauna samar da HPMC da aikace-aikace a daban-daban masana'antu.
HPMC samarwa
An haɗa HPMC ta hanyar amsawa ta hanyar amsawar cellulose tare da propylene oxide da methyl chloride a ƙarƙashin yanayin alkaline. Tsarin ya ƙunshi matakai masu zuwa:
Mataki na 1: Maganin alkaline na cellulose
Ana kula da cellulose tare da maganin caustic na sodium hydroxide don canza shi zuwa cellulose alkaline. Wannan magani yana sa ƙungiyoyin hydroxyl na cellulose su zama masu amsawa, suna sauƙaƙe halayen na gaba.
Mataki 2: Amsa da Propylene Oxide
A mataki na gaba, ana ƙara propylene oxide zuwa cikin cellulose na alkaline a ƙarƙashin yanayin zafi mai sarrafawa da yanayin matsa lamba. Ana aiwatar da martani a gaban mai kara kuzari kamar amine na uku ko alkali karfe hydroxide. Propylene oxide yana amsawa tare da ƙungiyoyin hydroxyl na cellulose don samar da hydroxypropyl cellulose.
Mataki 3: Quaternization tare da Methyl Chloride
Hydroxypropylcellulose daga nan an yi shi da methyl chloride don samar da HPMC. Ana aiwatar da halayen a ƙarƙashin yanayin alkaline, kuma ana iya sarrafa matakin quaternization ta hanyar daidaita adadin methyl chloride.
Sakamakon HPMC da aka samu an wanke, tace kuma a bushe don samun farin foda mai gudana kyauta. Kaddarorin HPMC, kamar danko, solubility, da kaddarorin gel, ana iya daidaita su ta canza matakin maye gurbin (DS) na ƙungiyoyin hydroxypropyl da methyl.
Farashin HPMC
HPMC yana da fa'idar aikace-aikace iri-iri a masana'antu daban-daban. Ana tattauna wasu fitattun aikace-aikace a ƙasa:
Masana'antar harhada magunguna
Ana amfani da HPMC sosai a cikin masana'antar harhada magunguna azaman mai kauri, ɗaure da tsohon fim. Ana amfani da shi a cikin kayan aikin kwamfutar hannu don sarrafa sakin kwayoyi. HPMC yana aiki azaman mai ɗaure ta hanyar damfara cakuda foda a cikin tsari mai ƙarfi. Yana kuma inganta solubility da bioavailability na talauci mai narkewa kwayoyi ta forming barga da uniform dispersions.
masana'antar abinci
Ana amfani da HPMC a masana'antar abinci azaman emulsifier, thickener da stabilizer. An fi amfani dashi a cikin kayan burodi, ice cream da kayan kiwo. HPMC yana inganta rubutu da daidaiton abinci ta hanyar hana rarrabuwa na sinadaran da rage syneresis. Hakanan yana haɓaka dandano da rayuwar rayuwar abinci.
Masana'antar kayan shafawa
Ana amfani da HPMC a cikin masana'antar kwaskwarima azaman mai kauri da emulsifier. Ana amfani da shi a cikin kayan gyaran fata da gashi kamar su lotions, creams, shampoos da conditioners. HPMC yana inganta rubutu da daidaiton waɗannan samfuran kuma yana ba da fa'idodin moisturizing da daidaitawa.
gine gine
Ana amfani da HPMC a cikin masana'antar gini azaman ƙari ga siminti, turmi da gypsum. Yana inganta aikin aiki da riƙewar ruwa na waɗannan kayan, ta haka ne ƙara ƙarfin su da dorewa. Har ila yau, HPMC yana rage haɗarin fashewa da raguwa yayin bushewa.
a karshe
A ƙarshe, HPMC wani nau'in polymer ne mai mahimmanci kuma mai dacewa tare da aikace-aikace a cikin masana'antu daban-daban. An shirya shi ta hanyar maganin alkali na cellulose, amsawa tare da propylene oxide, da quaternization tare da methyl chloride. Ana iya sauraran kaddarorin HPMC ta canza matakin maye gurbin. HPMC tana taka muhimmiyar rawa a cikin masana'antar harhada magunguna, abinci, kayan kwalliya da masana'antar gini ta hanyar haɓaka rubutu, daidaito da aiwatar da samfuran daban-daban. Rashin rashin guba da haɓakar halittu ya sa ya zama mai aminci da mahimmanci a cikin waɗannan masana'antu.
Lokacin aikawa: Agusta-03-2023