A thickening inji nahydroxyethyl celluloseshi ne ƙara danko ta hanyar samuwar intermolecular da intramolecular hydrogen bonds, kazalika da hydration da sarkar entanglement na kwayoyin sarƙoƙi. Saboda haka, hanyar thickening hydroxyethyl cellulose za a iya raba kashi biyu: daya shi ne rawar intermolecular da intramolecular hydrogen bond. Babban sarkar hydrophobic yana haɗuwa da kwayoyin ruwa da ke kewaye ta hanyar haɗin hydrogen, wanda ke inganta yanayin polymer kanta. Ƙarar ƙwayar ƙwayar cuta yana rage sararin samaniya don motsi kyauta na barbashi, ta haka yana ƙara danko na tsarin; na biyu, ta hanyar haɗakarwa da haɗuwa da sarƙoƙin ƙwayoyin cuta, sarƙoƙi na cellulose suna cikin tsarin cibiyar sadarwa mai girma uku a cikin tsarin gaba ɗaya, don haka inganta danko.
Bari mu dubi yadda cellulose ke taka rawa a cikin kwanciyar hankali na tsarin: na farko, rawar da haɗin gwiwar hydrogen ke hana ruwa kyauta, yana taka rawa wajen riƙe ruwa, yana taimakawa wajen hana rabuwar ruwa; na biyu, hulɗar sarƙoƙin cellulose Ƙunƙarar cinya ta samar da hanyar sadarwa mai haɗin kai ko yanki daban tsakanin pigments, fillers da emulsion particles, wanda ke hana daidaitawa.
Haɗin waɗannan hanyoyin biyu na sama ne ke ba da damarhydroxyethyl cellulosedon samun kyakkyawan iko don inganta kwanciyar hankali na ajiya. A cikin samar da fenti na latex, HEC da aka kara yayin bugawa da tarwatsewa yana ƙaruwa tare da haɓakar ƙarfin waje, haɓakar saurin ƙarfi yana ƙaruwa, ana shirya kwayoyin a cikin tsari mai tsari daidai da jagorar gudana, kuma an lalata tsarin jujjuyawar cinya tsakanin sassan kwayoyin halitta, wanda ke da sauƙin zamewa da juna, tsarin danko yana raguwa. Tun da tsarin ya ƙunshi adadi mai yawa na sauran abubuwa (pigments, fillers, emulsions), wannan tsari mai tsari ba zai iya mayar da yanayin haɗin kai da haɗin gwiwa ba ko da an sanya shi na dogon lokaci bayan an haɗa fenti. A wannan yanayin, HEC kawai yana dogara ne akan haɗin hydrogen. Tasirin riƙewar ruwa da ƙwanƙwasa yana rage girman tasirinHEC, da kuma gudunmawar wannan yanayin tarwatsawa ga kwanciyar hankali na tsarin yana raguwa daidai da haka. Koyaya, narkar da HEC ɗin ya tarwatse iri ɗaya a cikin tsarin cikin ƙaramin saurin motsawa yayin raguwa, kuma tsarin hanyar sadarwar da aka kirkira ta hanyar haɗin sarƙoƙi na HEC bai ragu ba. Don haka yana nuna inganci mafi girma da kwanciyar hankali na ajiya. Babu shakka, aikin lokaci guda na hanyoyin kauri guda biyu shine jigo na ingantaccen kauri na cellulose da tabbatar da kwanciyar hankali. A wasu kalmomi, yanayin narkar da cellulose da aka tarwatsa a cikin ruwa zai yi tasiri sosai ga tasirinsa mai kauri da kuma gudunmawarsa ga kwanciyar hankali.
Lokacin aikawa: Afrilu-25-2024