A cikin duniyar sinadarai, akwai mahadi da yawa waɗanda ke da kaddarorin iri ɗaya amma sun bambanta a aikace-aikacen su. Misali daya shine hydroxypropyl methylcellulose (HPMC) da hydroxyethyl cellulose (HEC). Ana amfani da waɗannan abubuwan da suka samo asali na cellulose a ko'ina a masana'antu daban-daban, amma fahimtar ƙayyadaddun kaddarorin su yana da mahimmanci don zaɓar abin da ya dace don takamaiman aikace-aikacen.
Hydroxypropyl methylcellulose, wanda aka fi sani da HPMC, wani abu ne na roba na cellulose. Ana samun shi ta hanyar magance cellulose na halitta tare da propylene oxide da methyl chloride, da kuma gabatar da hydroxypropyl da methyl kungiyoyin bi da bi. Wannan gyare-gyare yana haɓaka haɓakar ruwa na cellulose kuma yana inganta dukiyoyinsa. A daya hannun, hydroxyethyl cellulose (HEC) ne kuma wani cellulose samu ta dauki na halitta cellulose da ethylene oxide. Gabatarwar ƙungiyoyin hydroxyethyl yana haifar da ƙara yawan solubility na ruwa da kaddarorin kauri.
Ɗaya daga cikin manyan bambance-bambance tsakanin HPMC da HEC shine yankunan aikace-aikacen su. HPMC yana da fa'idar amfani da yawa a cikin masana'antar gini. Ana amfani da shi sosai azaman mai kauri a cikin samfuran tushen siminti irin su tile adhesives, busassun cakuda turmi da mahadi masu daidaita kai. Saboda kaddarorin da ke riƙe da ruwa, HPMC yana haɓaka iya aiki, mannewa da dorewa na waɗannan kayan gini. Bugu da ƙari, ana amfani da HPMC a matsayin mai samar da fim a cikin sutura da fenti, yana ba da kyakkyawan juriya da ruwa mai sheki.
HEC, a gefe guda, ana amfani dashi da farko a cikin kulawa da kayan shafawa. Ana amfani dashi azaman thickener, emulsifier da stabilizer a cikin creams, lotions, shampoos da sauran kayan kwalliya. HEC yana haɓaka danko na waɗannan ƙididdiga, yana haifar da mafi kyawun rubutu, yadawa da aikin samfurin gaba ɗaya. Ƙarfin yin fim ɗin sa kuma ya sa ya zama ingantaccen sinadari a cikin gels na gashi da mousses, yana samar da dogon lokaci ba tare da tsayawa ba.
Wani muhimmin bambanci shine kewayon danko na waɗannan mahadi. HPMC gabaɗaya yana da ɗanko mafi girma fiye da HEC. Wannan bambance-bambancen danko yana sa HEC ya fi dacewa da aikace-aikacen da ke buƙatar ƙarancin aiki mai ƙarfi zuwa matsakaici. HEC yana ba da kyakkyawan kwanciyar hankali da sarrafa kwararar ruwa a cikin ƙirar ruwa, yana tabbatar da ko da rarraba kayan aiki masu aiki. Mafi girman danko na HPMC, a gefe guda, ya sa ya dace da aikace-aikacen da ke buƙatar matsakaici zuwa babban kauri, kamar kayan gini.
Bugu da ƙari, HPMC da HEC sun bambanta a cikin dacewa da sauran sinadaran. HPMC yana da kyakkyawar dacewa tare da kewayon abubuwan ƙari da kuma kyakkyawan haƙuri ga salts da surfactants, yana mai da shi m a cikin nau'ikan nau'ikan nau'ikan. HEC, yayin da gabaɗaya ya dace da yawancin sinadarai, na iya samun wasu al'amurran da suka dace tare da wasu gishiri, acid, da surfactants. Sabili da haka, lokacin zabar tsakanin HPMC da HEC, yana da mahimmanci a yi la'akari da buƙatun dacewa na takamaiman tsari.
A taƙaice, HPMC da HEC, a matsayin abubuwan da suka samo asali na cellulose, suna da kaddarorinsu na musamman da aikace-aikace. Fahimtar bambance-bambance tsakanin waɗannan mahadi yana da mahimmanci don zaɓar fili mai dacewa don takamaiman aikace-aikacen. Ana amfani da HPMC sosai a cikin masana'antar gine-gine a matsayin mai kauri da mai samar da fim, yayin da HEC galibi ana amfani da shi a samfuran kulawa na sirri azaman mai kauri da ƙarfi. Ta hanyar la'akari da buƙatun danko da daidaituwa tare da wasu kayan aikin, za'a iya zaɓar abin da ya dace da cellulose, yana tabbatar da kyakkyawan aiki da sakamakon da ake so a cikin samfurin ƙarshe.
Godiya da hadin kan ku da JINJI CHEMICAL.
Lokacin aikawa: Nuwamba 14-2023