Hydroxyethylcellulose (HEC) iyo hydroxypropylcellulose (HPC) waa labadoodaba asal ahaan cellulose, polymer-ka dabiiciga ah ee laga helo gidaarada unugyada dhirta.Alaabooyinkan cellulose-ka ah ayaa si weyn loogu isticmaalaa warshado kala duwan iyadoo ay ugu wacan tahay sifooyinkooda gaarka ah.
Qaab dhismeedka kiimikada:
Hydroxyethylcellulose (HEC):
HEC waxa lagu farsameeyaa iyada oo ka falcelinaysa cellulose leh ethylene oxide.
Qaab dhismeedka kiimikaad ee HEC, kooxaha hydroxyethyl waxaa lagu soo bandhigaa laf dhabarta cellulose.
Heerka beddelka (DS) waxay ka dhigan tahay celceliska tirada kooxaha hydroxyethyl unuggii gulukoosta ee silsiladda cellulose.
Hydroxypropylcellulose (HPC):
HPC waxa lagu soo saaraa daawaynta cellulose leh propylene oxide.
Inta lagu jiro habka isku-dhafka, kooxaha hydroxypropyl ayaa lagu daraa qaab-dhismeedka cellulose.
Si la mid ah HEC, heerka beddelka ayaa loo isticmaalaa in lagu qiyaaso inta ay le'eg tahay beddelka hydroxypropyl ee molecule cellulose.
sifo:
Hydroxyethylcellulose (HEC):
HEC waxay caan ku tahay awoodeeda haynta biyaha ee aadka u wanaagsan, taas oo ka dhigaysa shay caadi ah oo ku jira codsiyada dhumucyada iyo gelling kala duwan.
Waxay ka samaysaa xal cad oo biyaha ah waxayna muujisaa habdhaqanka pseudoplastic, taasoo la micno ah inay yaraanayso viscous marka la eego diiqada xiirid.
HEC waxaa caadi ahaan loo isticmaalaa samaynta alaabta daryeelka shakhsi ahaaneed, daawooyinka, iyo dhumuc ahaan ee daaha biyaha ku salaysan.
Hydroxypropylcellulose (HPC):
HPC sidoo kale waxay leedahay milmi-biyood wanaagsan iyo sifooyin-samaynta filimada.
Waxay leedahay iswaafajin ballaaran oo kala duwan oo leh dareerayaal kala duwan marka loo eego HEC.
HPC waxaa inta badan loo isticmaalaa sida xire ahaan qaababka daawooyinka, alaabta daryeelka afka, iyo soo saarista kiniiniga.
codsi:
Hydroxyethylcellulose (HEC):
Waxaa si weyn loogu isticmaalaa warshadaha isku qurxiyo iyo daryeelka shakhsi ahaaneed sida dhumuc weyn ee shambooyinka, loshinka iyo kiriimyada.
Loo isticmaalo sidii dejiye iyo nidaamiyaha viscosity ee habaynta dawooyinka.
Loo isticmaalo soo saarista rinjiga biyaha ku salaysan iyo dahaarka.
Hydroxypropylcellulose (HPC):
Caadi ahaan loo isticmaalo codsiyada dawooyinka, gaar ahaan sida xidhe ee soo saarista kiniinka.
Waxa loo isticmaalaa alaabta daryeelka afka sida daawada cadayga si ay u dhumucdo.
Waxa loo isticmaali karaa hababka gudbinta daroogada ee la xakameeyey.
Halka hydroxyethyl cellulose (HEC) iyo hydroxypropyl cellulose (HPC) ay wadaagaan qaar la mid ah asalkooda cellulose, waxay ku kala duwan yihiin qaabdhismeedka kiimikada, guryaha, iyo codsiyada.HEC inta badan waxaa lagu door bidaa daryeelka shakhsi ahaaneed iyo qaabaynta daahan ee haynta biyaha iyo dhumucdeeda, halka HPC si weyn loogu isticmaalo warshadaha dawooyinka, gaar ahaan soosaarka kiniinka iyo nidaamyada gudbinta daawada la xakameeyey.Fahamka kala duwanaanshahan ayaa muhiim u ah doorashada soosaarayaasha cellulose ee ku habboon codsiyada warshadaha gaarka ah.
Waqtiga boostada: Jan-16-2024