Hydroxypropylcellulose (HPC) waa dheesha synthetic ee cellulose, polymer dabiici ah oo laga helo gidaarada unugyada dhirta. Soo saarista hydroxypropylcellulose waxay ku lug leedahay wax ka beddelka kiimikaad ee cellulose iyada oo loo marayo falcelin taxane ah. Dib-u-habayntani waxay siinaysaa cellulose sifooyin gaar ah oo ka dhigaya mid waxtar u leh noocyada kala duwan ee warshadaha iyo daawooyinka.
Qaab dhismeedka hydroxypropylcellulose:
Hydroxypropylcellulose waa hydroxyalkyl derivative of cellulose kaas oo kooxda hydroxypropyl ay ku dheggan yihiin laf dhabarta cellulose. Laf-dhabarka cellulose lafteedu waa silsilad toosan oo unugyo gulukoos ah oo ku xidhan curaarta β-1,4-glycosidic. Kooxaha Hydroxypropyl waxaa lagu soo bandhigaa iyaga oo ka falcelinaya cellulose leh propylene oxide iyadoo ay jirto joogitaanka kicinta alkaline.
Heerka beddelka (DS) waa halbeeg muhiim ah oo qeexaya qaab dhismeedka hydroxypropylcellulose. Waxay ka dhigan tahay celceliska tirada kooxaha hydroxypropyl halkii unug glucose ee silsiladda cellulose. DS waa la xakameyn karaa inta lagu jiro habka isku-dhafka, taasoo u oggolaanaysa soo-saarka hydroxypropylcellulose oo leh heerar kala duwan oo beddel ah si loo buuxiyo shuruudaha codsiga gaarka ah.
Isku dhafka hydroxypropylcellulose:
Isku dhafka hydroxypropylcellulose wuxuu ku lug leeyahay falcelinta u dhexeeya cellulose iyo propylene oxide. Dareen-celintan waxaa inta badan lagu fuliyaa joogitaanka kicinta aasaasiga ah sida sodium hydroxide. Kiciyayaasha alkaline waxay kor u qaadaan furitaanka giraanta epoxy ee propylene oxide, taasoo keentay in lagu daro kooxaha hydroxypropyl ee silsiladda cellulose.
Dareen-celinta waxaa badanaa lagu fuliyaa dareere waxaana heerkulka iyo waqtiga falcelinta si taxadar leh loo xakameeyaa si loo gaaro heerka la rabo ee beddelka. Falcelinta ka dib, alaabta sida caadiga ah waxaa lagu sifeeyaa hababka sida dhaqidda iyo sifaynta si meesha looga saaro wax kasta oo reagents ama by-products.
Astaamaha Hydroxypropyl Cellulose:
Solubility: Hydroxypropylcellulose waxay ku milmi kartaa noocyo kala duwan oo dareere ah, oo ay ku jiraan biyaha, ethanol, iyo dareerayaal badan oo dabiici ah. Hantidan milmayni waxay ka dhigaysaa mid ku habboon codsiyada kala duwan.
Viscosity: Ku darista kooxaha hydroxypropyl cellulose waxay kordhisaa milanka waxayna beddeshaa sifooyinka viscosity ee polymerka. Tani waxay ka dhigaysaa hydroxypropylcellulose mid qiimo leh hababka daawooyinka, inta badan sida wakiilka dhumuc ama gelling.
Sameynta Filimada: Hydroxypropylcellulose waxay sameyn kartaa filimo dabacsan oo hufan, taasoo ka dhigaysa mid ku habboon dahaarka, filimada iyo sida xireha qaababka kiniinka.
Xasilloonida kulaylka: Hydroxypropylcellulose waxay leedahay xasillooni kuleyl oo wanaagsan, taas oo u oggolaanaysa in loo isticmaalo habab warshadeed oo kala duwan iyada oo aan hoos u dhicin.
Waafaqid: Waxay la jaanqaadi kartaa noocyo kala duwan oo polymers kale ah iyo alaab-qeybiyeyaal kale, taasoo kor u qaadaysa faa'iidadeeda qaababka dawooyinka iyo qurxinta.
Codsiyada Hydroxypropyl Cellulose:
Daawooyinka: Hydroxypropylcellulose waxaa si weyn loogu isticmaalaa warshadaha dawooyinka sida binder ee hababka kiniinka, wax ka beddelka viscosity ee foomamka qiyaasta dareeraha ah, iyo wakiilka filim-samaynta ee daaha ee foomamka qiyaasta qiyaasta afka.
Alaabooyinka Daryeelka Shakhsi ahaaneed: Waxyaabaha la isku qurxiyo iyo alaabta daryeelka gaarka ah, hydroxypropylcellulose waxaa loo isticmaalaa dhumuc weyn, xasiliye iyo wakiilka filim sameynta alaabada sida kiriimyada, labeennada iyo qaababka daryeelka timaha.
Codsiyada Warshadaha: Iyadoo ay sabab u tahay sifooyinka filim-samaynta iyo dhejiska, hydroxypropylcellulose waxaa loo isticmaali karaa noocyo kala duwan oo ah codsiyada warshadaha, oo ay ku jiraan dahaarka, dhejiska iyo sida xiraha wax soo saarka ee alaabta la isku qurxiyo.
Warshadaha cuntada: Warshadaha cuntada, hydroxypropylcellulose waxa loo isticmaali karaa dhumuc iyo xasiliye habaynta cuntada qaarkood.
Warshadaha Dharka: Hydroxypropyl cellulose waxaa loo isticmaali karaa warshadaha dharka iyada oo leh filim samaynta iyo alaabada dhejiska si ay uga caawiso dhamaystirka dharka.
Hydroxypropyl cellulose waa derivative cellulose la beddelay oo si weyn loogu isticmaalo dawooyinka, alaabta daryeelka shakhsi ahaaneed, iyo codsiyada warshadaha kala duwan ay sabab u tahay milmay, guryaha viscosity-wax ka beddelka, awoodaha filim-samaynta, iyo waafaqsan yahay codsiga alaabta kale. Isku-duubnideeda iyo isku-darka xakamaynta ayaa ka dhigaya polymer qiimo leh oo ku saabsan codsiyada kala duwan.
Waqtiga boostada: Dec-26-2023