Hydroxytylyl (HEC) waa polymer muhiim ah oo biyo-ah oo muhiim ah oo ka tirsan chothose Ether fasalka ee xeryahooda. Waxaa lagu helaa falcelinta qaniinyada ee unugyada dabiiciga ah ee leh ethynenene okside (ethyleneeeene oxide) xaaladaha alkaline. Kariimka hydroxytyl waa silsilado jilicsan oo jilicsan oo ka kooban unugyada gulukooska ee qaabdhismeedka kiimikada, iyo dhammaan kooxaha hydroxyl-ka ee ku jira unugyada gulukooska waxaa lagu beddelaa kooxaha hydroxytyl si ay u sameeyaan byroxyetyl.
Waxyaabaha ay ka kooban yihiin iyo qaab dhismeedka kiimikada
Qaab dhismeedka molikal ee hydroxytyl bylulose waxaa ku jira qaybaha soo socda:
Celpulose laf-dhabarka: Cellulose waa polysaccharide dabiici ah, qaybta ugu weyn ee ah silsiladda toosan ee unugyada gulukoosku ay ku xiran yihiin β - 1,4-glycosidididic. Qaab dhismeedkan ee unugyada cellulose wuxuu siiyaa mid sabool ah oo kacsan iyo xoog jir ahaaneed.
Hydroxytyl broamitluent: Qeybta gulukooska ee laf-dhabarka laf-dhabarka, waxaa jira seddex kooxo hydroxyl (oo ku yaal S2, oo ku yaal jagooyinka C3, C3 iyo jagooyinka C3 siday u kala horreeyaan. Hydroxyethyl cellulose is produced by introducing hydroxyethyl (–CH2CH2OH) groups on the hydroxyl groups through an etherification reaction between these hydroxyl groups and ethylene oxide. Soo bandhigida wax-ku-biirintan waxay yareysaa cryststallinal-ka ee cronstptallity-ka cudurka cellulose, waxay wanaajisaa jilicsanaanta biyaha, waxayna ka dhigeysaa inay soo bandhigto dhumuc wanaagsan iyo viscousitic-ka wanaagsan ee xalka aqueous.
Miisaanka Moleculal iyo heerka beddelka: Miisaanka Moleculal iyo heerka beddelka (ie, tirada kooxaha hydroxyl ee lagu beddelay unug gulukoos ah) ee hydroxytyl cellulose waa laba arrimood oo muhiim ah oo saameeya guryahooda. Guud ahaan, hydroxytyl cell-ka miisaanka molikal sare wuxuu leeyahay viscosity viscosity iyo awood qaro weyn, halka heerka sare ee beddelka ah uu kor u qaadayo silsiladeeda biyaha iyo xasilloonida.
Pictuchies Perviess of hydroxyetyl cellulose
Qaab dhismeedka u gaarka ah awgood, hydroxyetyl cellulose wuxuu muujiyaa taxane muuqaalyo muuqaal ah oo muuqaal fiican leh:
Xoolaha biyaha Geedihiisa kala sooca ayaa si weyn wax u saameeya qiimaha pH isla markaana uu deggan yahay shax aad u ballaaran (badiyaa inta u dhaxaysa 2 iyo 12).
Xaddiraadda Maaddaama feejignaantu ay kordhaan, jawiga xalka xalka kordho, sidaa darteed waxaa si weyn loogu isticmaalaa meelaha warshadaha u baahan dhumucyo.
Waxqabadka dusha sare Hantidan ayaa ka dhigaysa in loo isticmaalo jaakadaha, khadadka iyo meelaha kale, waxayna horumarin karaan dareeraha iyo goobaha daboolka ee sheyga.
Deganaansho Iyada ma liidato inta badan sheyga ugu hooseeya xalka aqueous, sidaa darteed ma fududa in la xuso inta lagu gudajiro kaydinta.
Biyo-darrada iyo badbaadada Tusaale ahaan, waxaa loo istcimaalaa sidii dhumuc weyn oo lagu nasiyaa cuntada, sida ixifeeyaha iyo Emulsifier Smalaanka u dhigma qurxinta, iyo matrix-daada la xakameeyo oo la xakameeyo ee kiniiniyada diyaarsanaanta dawooyinka.
Diyaarinta iyo Codsiga
Diyaarinta unugyada hydroxyetyl bylulose waxay badanaa u qaybsan yihiin seddex talaabo: alantalization of cellulose, falcelinta la soo saaray, isdaahirinta iyo qalajinta. Marka hore, cellulose waxaa lagu daweeyaa xaaladaha alkaline si ay u dhaqaajiso kooxaha hyroxyl ee cellulose, ka dibna ka falceliyay ethylenenene oxide si ay u soo saaraan byroxyetyl byluxyl. Ugu dambeyntiina, sheyga ugu dambeeya waxaa lagu helaa talaabooyin sida dhexdhexaad, daahirinta iyo qalajinta.
Hydroxyethyl cellulose is widely used in building materials (such as cement mortar and coatings), daily chemicals (such as detergents and cosmetics), medicine (such as drug controlled release systems) and food industry (such as thickeners and stabilizers).
Kariimka hydroxyetyl waxaa si weyn loogu isticmaalaa qaybo kala duwan awgood dhismaheeda jir ahaaneed iyo kiimiko iyo kiimiko wanaagsan iyo is-waara. Midnimada qaab dhismeedkeeda iyo qaab dhismeedka ayaa awood u siinaya inay door muhiim ah ka ciyaaraan dhumucda, emulsification, eryida, abuurista filimka iyo xasilinta, waana wax aan la arki karin.
Waqtiga Post: Feb-17-2025