Hydroxypropylmethylcellulose (HPMC) waa polymer multifunctional ah oo ka soo jeeda cellulose si weyn loogu isticmaalo warshado kala duwan sababtoo ah sifooyinka gaarka ah.Xarunta waxa lagu farsameeyaa iyada oo loo marayo isbeddel kiimiko oo taxane ah oo lagu sameeyo cellulose, polymer dabiici ah oo laga helo gidaarada unugyada dhirta.
alaabta ceeriin:
Xigasho: Cellulose waa alaabta ceeriin ee ugu weyn ee HPMC, taas oo ah mid aad u badan dabeecadda lagana soo saaro dhirta.Saxarka alwaaxa iyo suufka suufku waa ilaha ugu badan ee cellulose.
Go'doomin: Habka soo saarista waxaa ku jira jebinta derbiyada unugyada dhirta iyo kala soocidda fiilooyinka cellulose.Habab kala duwan oo kiimiko iyo farsamo ayaa loo isticmaali karaa ujeedadan.
Propylene oxide:
Isha: Propylene oxide waa unug dabiici ah oo ka soo jeeda ilaha batroolka.
Shaqada: Propylene oxide waxaa loo isticmaalaa in lagu soo bandhigo kooxaha hydroxypropyl molecules cellulose inta lagu jiro habka isku-dhafka, kor u qaadida milanka biyaha iyo beddelidda sifooyinka jireed ee HPMC ee ka dhashay.
Methyl chloride:
Xigasho: Methyl chloride waa hydrocarbon koloriin leh oo laga soo saari karo methanol.
Shaqada: Methyl chloride waxaa loo isticmaalaa in lagu soo bandhigo kooxaha methyl molecules cellulose, taas oo gacan ka geysata guud ahaan hydrophobicity ee HPMC.
Sodium hydroxide (NaOH):
Isha: Sodium hydroxide, oo sidoo kale loo yaqaano soodhaha caustic, waa saldhig xooggan oo ganacsi ahaan loo heli karo.
Shaqada: NaOH waxaa loo isticmaalaa in lagu kiciyo falcelinta oo lagu hagaajiyo qiimaha pH ee isku dhafka falcelinta inta lagu jiro habka isku-dhafka.
Synthesis:
Isku dhafka HPMC wuxuu ku lug leeyahay dhowr tillaabo, nidaamka falcelinta waxaa lagu soo koobi karaa sida soo socota:
Qaadista:
Cellulose waxaa lagu daaweeyaa sodium hydroxide si loo soo saaro cellulose alkaline.
Alkali cellulose waxaa lagu falceliyaa propylene oxide si loo soo bandhigo kooxaha hydroxypropyl.
Methylation:
Hydroxypropylated cellulose waxaa lagu sii falceliyaa methyl chloride si loo soo bandhigo kooxaha methyl.
Tallaabadani waxay siinaysaa polymer-ka xasilloonida dheeraadka ah iyo hydrophobicity.
Dhexdhexaadinta iyo shaandhaynta:
Isku darka falcelinta ayaa dhexdhexaad ah si meesha looga saaro saldhigga xad-dhaafka ah.
Sifeynta ayaa la sameeyay si loo go'doomiyo cellulose la beddelay.
Dhaqidda iyo qalajinta:
Alaabta la kala soocay waa la dhaqaa ka dibna la qalajiyey si loo helo hydroxypropyl methylcellulose oo ah budo ama qaab granular ah.
Dabeecad milanka HPMC:
HPMC waa biyo-milmi kara, milmayntiisana waxa lagu hagaajin karaa iyadoo loo eegayo heerka beddelka kooxaha hydroxypropyl iyo methyl.
Awood sameynta filimka:
HPMC waxay samaysaa filimo dabacsan, oo hufan oo ku haboon codsiyada warshadaha dawooyinka iyo cuntada.
Viscosity:
Viscosity ee xalka HPMC waa la kontarooli karaa oo waxaa inta badan loo isticmaalaa sidii dhumuc iyo wakiilka gelling ee qaabab kala duwan.
Jaleecada kulaylka:
Darajooyinka qaarkood ee HPMC waxay soo bandhigaan sifooyin heerkulbeeg ah, samaynta jel marka la kululeeyo oo ku soo noqda xal marka la qaboojiyo.
Dhaqdhaqaaqa dusha sare:
HPMC waxaa loo isticmaali karaa sidii surfactant ah, iyo dhaqdhaqaaqeeda oogada waxaa saameeya heerka beddelka.
Daawooyinka la dabaqay ee HPMC:
HPMC waxa si weyn loogu isticmaalaa habaynta dawooyinka sida xidhayaasha, kala daadinta, iyo wakiilada sii daynta la kantaroolo ee kiniiniyada iyo kaabsalka.
Warshadaha dhismaha:
Qaybta dhismaha, HPMC waxa loo isticmaalaa dhumuc ahaan alaabta cement-ku-salaysan sida hoobiyeyaal iyo xabag-tileed.
warshadaha cuntada:
HPMC waxa loo isticmaalaa warshadaha cuntada sidii dhumuc, emulsifier iyo xasiliye alaabooyin kala duwan, oo ay ku jiraan suugada, macmacaanka iyo jalaatada.
Alaabooyinka daryeelka shakhsi ahaaneed:
Qurxinta iyo alaabta daryeelka shakhsi ahaaneed, HPMC waxaa loo isticmaalaa habaynta sida kiriimyada, looshannada iyo shaambooyinka sababtoo ah dhumucdooda iyo xasilinta.
Rinjiyeynta iyo Dahaarka:
HPMC waxaa lagu daraa rinjiyeynta iyo dahaarka si loo xakameeyo viscosity, wanaajiyo sifooyinka codsiga iyo kor loogu qaado sifooyinka samaynta filimada.
Xalka Indhaha:
HPMC waxa loo isticmaalaa dhibcaha indhaha iyo ilmada macmalka ah taas oo ay ugu wacan tahay isqabqabsigeeda iyo waxyaabaha xabkaha ka samaysan.
Gabagabadii:
Hydroxypropylmethylcellulose (HPMC) waa polymer cajiib ah oo laga sameeyay cellulose kheyraadka la cusboonaysiin karo.Waxyaabaha ay ka kooban tahay oo kala duwan iyo codsiyo kala duwan ayaa ka dhigaya qayb muhiim ah oo ka mid ah warshadaha kala duwan, laga bilaabo dawooyinka ilaa dhismaha iyo cuntada.Iyada oo si taxadar leh loo dooranayo alaabta ceeriin iyo xakamaynta xuduudaha isku-dhafka, HPMC-yada leh sifooyin gaar ah ayaa la soo saari karaa si loo daboolo baahiyaha gaarka ah ee codsiyada kala duwan.Maaddaama tignoolajiyada iyo baahiyaha ay sii kobcayaan, HPMC waxay u badan tahay inay sii ahaan doonto ciyaartoy fure u ah hal-abuurnimada iyo horumarinta badeecada waara ee warshadaha oo dhan.
Waqtiga boostada: Dec-18-2023