Riƙewar ruwa abu ne mai mahimmanci ga masana'antu da yawa waɗanda ke amfani da abubuwan hydrophilic kamar ethers cellulose.Hydroxypropylmethylcellulose (HPMC) yana ɗaya daga cikin ethers cellulose tare da manyan abubuwan riƙe ruwa.HPMC shine polymer Semi-Synthetic wanda aka samo daga cellulose kuma ana amfani dashi a aikace-aikace iri-iri a cikin gine-gine, magunguna da masana'antun abinci.
Ana amfani da HPMC sosai azaman mai kauri, mai ƙarfi da emulsifier a cikin samfuran abinci daban-daban kamar ice cream, biredi da riguna don haɓaka nau'in su, daidaito da rayuwar shiryayye.Hakanan ana amfani da HPMC wajen samar da magunguna a cikin masana'antar harhada magunguna a matsayin mai ɗaure, tarwatsawa da kuma mai ɗaukar fim.Hakanan ana amfani dashi azaman wakili mai riƙe ruwa a cikin kayan gini, galibi a cikin siminti da turmi.
Riƙewar ruwa abu ne mai mahimmanci a cikin ginin saboda yana taimakawa wajen kiyaye sabbin siminti da turmi da aka gauraye daga bushewa.Bushewa na iya haifar da raguwa da fashewa, yana haifar da rarrauna da rashin kwanciyar hankali.HPMC na taimakawa wajen kula da abubuwan da ke cikin ruwa a cikin siminti da turmi ta hanyar shayar da kwayoyin ruwa tare da sakin su a hankali a kan lokaci, barin kayan gini su warke da taurare.
Ka'idar riƙewar ruwa ta HPMC ta dogara ne akan ƙarfin ruwa.Saboda kasancewar ƙungiyoyin hydroxyl (-OH) a cikin tsarin kwayoyin halitta, HPMC yana da alaƙa mai girma ga ruwa.Ƙungiyoyin hydroxyl suna hulɗa da kwayoyin ruwa don samar da haɗin gwiwar hydrogen, wanda ya haifar da samuwar harsashi mai ruwa a kusa da sarƙoƙi na polymer.Harsashi mai ruwa yana ba da damar sarƙoƙi na polymer don faɗaɗa, ƙara ƙarar HPMC.
Kumburi na HPMC tsari ne mai ƙarfi wanda ya dogara da abubuwa daban-daban kamar digiri na maye gurbin (DS), girman barbashi, zafin jiki da pH.Matsayin musanya yana nufin adadin ƙungiyoyin hydroxyl da aka maye gurbinsu da rukunin anhydroglucose a cikin sarkar cellulose.Mafi girman ƙimar DS, mafi girma na hydrophilicity kuma mafi kyawun aikin riƙe ruwa.The barbashi size of HPMC kuma rinjayar ruwa riƙewa, kamar yadda karami barbashi da mafi girma surface area kowace naúrar taro, sakamakon a mafi girma sha ruwa.Zazzabi da ƙimar pH suna shafar matakin kumburi da riƙewar ruwa, kuma mafi girman zafin jiki da ƙananan ƙimar pH suna haɓaka busawa da abubuwan riƙe ruwa na HPMC.
Tsarin riƙe ruwa na HPMC ya ƙunshi matakai guda biyu: sha da lalata.A lokacin sha, HPMC yana shayar da kwayoyin ruwa daga muhallin da ke kewaye, yana samar da harsashi mai ruwa a kusa da sarƙoƙin polymer.Harsashin hydration yana hana sarƙoƙin polymer rushewa kuma yana kiyaye su, yana haifar da kumburin HPMC.Kwayoyin ruwa da aka sha suna samar da haɗin gwiwar hydrogen tare da ƙungiyoyin hydroxyl a cikin HPMC, suna haɓaka aikin riƙe ruwa.
A lokacin da bazuwar, HPMC tana fitar da kwayoyin ruwa a hankali, yana barin kayan gini su warke yadda yakamata.Jinkirin sakin kwayoyin ruwa yana tabbatar da cewa siminti da turmi sun kasance cikin ruwa sosai, yana haifar da tsayayyen tsari mai dorewa.Jinkirin sakin kwayoyin ruwa kuma yana ba da isasshen ruwa ga siminti da turmi, yana haɓaka aikin warkarwa da haɓaka ƙarfi da kwanciyar hankali na samfurin ƙarshe.
A taƙaice, riƙewar ruwa abu ne mai mahimmanci ga masana'antu da yawa waɗanda ke amfani da abubuwan hydrophilic kamar ethers cellulose.HPMC yana ɗaya daga cikin ethers cellulose tare da manyan abubuwan riƙe ruwa kuma ana amfani dashi sosai a cikin gine-gine, magunguna da masana'antun abinci.Abubuwan da ke riƙe da ruwa na HPMC sun dogara ne akan hydrophilicity, wanda ke ba shi damar ɗaukar kwayoyin ruwa daga yanayin da ke kewaye, samar da harsashi na ruwa a kusa da sarƙoƙin polymer.Harsashi mai ruwa yana sa HPMC ta kumbura, kuma jinkirin sakin kwayoyin ruwa yana tabbatar da cewa kayan gini ya kasance cikakke, yana haifar da tsayayyen tsari mai dorewa.
Lokacin aikawa: Agusta-24-2023