Hydroxyethylcellulose (HEC) waa polymer-ka biyaha ku milma oo si ballaaran loogu isticmaalo warshadaha kala duwan iyo alaabada macaamiisha maalinlaha ah, gaar ahaan alaabta daryeelka shakhsi ahaaneed iyo saabuunta. Waxay leedahay dhumuc wanaagsan, hakin, emulsifying, filim samaynta iyo hawlaha kolloid ilaalinta, sidaas darteed waxaa inta badan loo isticmaalaa sidii dhumuc ee saabuun dareere ah.
1. Qaab dhismeedka iyo sifooyinka hydroxyethyl cellulose
HEC waa derivative nonionic ah oo laga helay cellulose iyada oo loo marayo falcelinta etherification waxayna leedahay awood fuuq-bax xoog leh iyo hydrophilicity. Silsiladda molecular ee HEC waxay ka kooban tahay kooxo badan oo hydroxyethyl ah oo bedelaya atamka hydrogen ee cellulose dabiiciga ah, samaynta taxane ah qaabab molecular silsilad dheer. Qaab dhismeedka molecular wuxuu u oggolaanayaa HEC inay si dhakhso ah u bararaan biyaha si ay u sameeyaan xal isku mid ah oo viscous ah.
Hantida muhiimka ah ee HEC waa laqabsiga qiyamka pH ee kala duwan. Waxay ku ilaalisaa saamaynta dhumucda badan ee pH ballaaran, taasoo siinaysa faa'iido weyn alaabta sida saabuunta dareeraha ah, kuwaas oo laga yaabo inay yeeshaan waxyaabo badan oo firfircoon iyo isbeddel pH ah. Intaa waxaa dheer, HEC waxay sidoo kale leedahay biocompatibility wanaagsan iyo badbaado, waxayna ku habboon tahay in loo isticmaalo alaabooyin kala duwan oo soo gala jidhka bini'aadamka, sida saabuunta dareeraha ah, shaambo, iwm.
2. Habka dhumucda ee hydroxyethyl cellulose ee saabuun dareere ah
Qaababka saabuunta dareeraha ah, habka ugu muhiimsan ee ficilka HEC sida dhumucdiisu waa in la kordhiyo viscosity ee saabuunta dareeraha ah iyadoo lagu milmay biyaha si loo sameeyo xal viscous ah. Gaar ahaan, marka HEC lagu milmo biyaha, silsiladaheeda molecular waxay ku daraan molecules biyaha iyada oo loo marayo bonds hydrogen intermolecular si loo sameeyo qaabdhismeedka shabakad adag. Qaab dhismeedka shabakadu wuxuu si wax ku ool ah u xidhi karaa tiro badan oo unugyo biyo ah, taas oo si weyn u kordhinaysa viscosity ee xalka.
Saamaynta dhumucda HEC waxay si dhow ula xiriirtaa miisaankeeda kelli iyo qadarka dheeriga ah. Guud ahaan, marka uu sii weynaado miisaanka kelli ee HEC, ayaa sarreeya viscosity ee xalka la sameeyay; Isla mar ahaantaana, kor u kaca heerka sare ee HEC ee xalka, ayaa si cad u muuqda saameynta dhumucda. Si kastaba ha noqotee, codsiyada wax ku oolka ah, feejignaanta HEC ee aadka u sareysa waxay keeni kartaa in xalku noqdo mid aad u muuqda oo saameeya khibradaha isticmaalaha, sidaas darteed waxay u baahan tahay in si taxadar leh loo xakameeyo inta lagu jiro naqshadaynta.
3. Faa'iidooyinka saamaynta dhumucda HEC
HEC waxay leedahay faa'iidooyin badan oo muhiim ah marka loo eego dhumucyada kale. Ugu horreyntii, waxay leedahay biyo aad u wanaagsan oo milmi leh waxayna si dhakhso ah ugu milmi kartaa biyo qabow ama kulul waxayna samayn kartaa xal isku mid ah oo viscous ah. Marka labaad, HEC ma aha oo kaliya inay si wax ku ool ah u dhumucdo heerarka hoose, laakiin sidoo kale waxay bixisaa saameyn dhumuc deggan, taas oo si gaar ah muhiim ugu ah alaabta saabuunta dareeraha ah ee u baahan kaydinta muddada dheer. Marka saddexaad, sida dhumuc aan-ionic ahayn, HEC waxay ilaalin kartaa viscosity deggan marka la eego xaaladaha pH ee kala duwan oo si fudud uma saameeyaan qaybaha kale ee nidaamka.
4. Dhaqanka codsiga ee HEC ee samaynta saabuunta dareeraha ah
Wax soo saarka dhabta ah, HEC waxaa badanaa lagu daraa saabuunta dareeraha ah ee qaabka budada ah. Si loo hubiyo in HEC ay si buuxda u milmi karto oo ay u fuliso saameynteeda dhumucdeeda, badanaa waa lagama maarmaan in fiiro gaar ah loo yeesho isku-dhafka isku-dhafka marka lagu daro HEC si looga fogaado gardarrada. Intaa waxaa dheer, si loo sii wanaajiyo waxqabadka saabuunta dareeraha ah, HEC waxaa inta badan loo isticmaalaa iyada oo lala kaashanayo dhumucyada kale, humectants ama surfactants si loo gaaro tayada badeecada ugu fiican iyo khibrad isticmaale.
Sida dhumuc wax ku ool ah, hydroxyethyl cellulose waxay leedahay rajada codsiga ballaaran ee saabuunta dareeraha ah. Waxay si weyn u kordhin kartaa viscosity ee alaabta iyo wanaajin kartaa waayo-aragnimo user. Waxa kale oo ay leedahay iswaafajin wanaagsan iyo xasillooni waana doorasho ku habboon adkaynta saabuunta dareeraha ah.
Waqtiga boostada: Agoosto-19-2024