Hydroxyethylcellulose (HEC) ke polymer e sa qhibiliheng metsing e tsoang ho cellulose. Sebopeho sa eona sa lik'hemik'hale le litšobotsi tsa eona tse ikhethang li etsa hore e be motsoako o feto-fetohang ka lits'ebetso tse fapaneng indastering e kang meriana, litlolo, lijo le tlhokomelo ea botho. E 'ngoe ea litšobotsi tsa eona tse hlahelletseng ke litšobotsi tsa eona tse ntle tsa ho emisoa, tse bapalang karolo ea bohlokoa mefuteng e mengata.
Sebopeho le Matlotlo a HEC
HEC e nkiloe ho cellulose, e leng polymer ea tlhaho e fumanoang maboteng a sele ea limela. Ka letoto la lik'hemik'hale, lihlopha tsa hydroxyethyl li kenngoa mokokotlong oa cellulose, e leng se fellang ka polymer e qhibilihang ka metsing e nang le thepa e ikhethang.
Sebopeho sa Lik'hemik'hale: Sebopeho sa motheo sa cellulose se na le diyuniti tsa glucose tse pheta-phetoang tse hokahantsweng hammoho ke dibonto tsa β-1,4-glycosidic. Ho HEC, tse ding tsa dihlopha tsa hydroxyl (-OH) diyuniti tsa glucose di nkeloa sebaka ke dihlopha tsa hydroxyethyl (-OCH2CH2OH). Phetoho ena e fana ka ho qhibiliha ha metsi ho polymer ha e ntse e boloka sebopeho sa mokokotlo wa cellulose.
Ho qhibiliha ha Metsi: HEC e qhibiliha haholo metsing, e etsa ditharollo tse hlakileng, tse tiileng. Tekanyo ya phetolo (DS), e bontshang palo e tloaelehileng ya dihlopha tsa hydroxyethyl ka yuniti ya glucose, e susumetsa ho qhibiliha ha polymer le thepa e meng. Boleng bo hodimo ba DS hangata bo fella ka ho qhibiliha ho hoholo ha metsi.
Ho tsikinyeha: Litharollo tsa HEC li bontša boitšoaro ba pseudoplastic, ho bolelang hore ho tsikinyeha ha tsona hoa fokotseha tlas'a khatello ea ho thiba. Thepa ena e molemo lits'ebetsong tse kang lipente le likhomaretsi, moo thepa e hlokang ho phalla habonolo nakong ea ts'ebeliso empa e boloka ho tsikinyeha ha e phomotse.
Ho Hlahisa Filimi: HEC e ka etsa lifilimi tse bonaletsang, tse tenyetsehang ha e omisitsoe, e leng se etsang hore e lokele ho sebelisoa e le moemeli oa ho etsa filimi lits'ebetsong tse fapaneng.
Matlotlo a ho fanyeha a HEC
Ho emisoa ho bolela bokhoni ba thepa e tiileng ba ho lula e hasane ka ho lekana ka har'a mokelikeli o metsi ntle le ho lula ha nako e ntse e ea. HEC e bontša litšobotsi tse ntle tsa ho emisoa ka lebaka la lintlha tse 'maloa:
Ho Monya metsi le ho Ruruha: Ha dikarolwana tsa HEC di hasanngwa ka hara mokelikeli o metsi, di a nosetsa le ho ruruha, di bopa marangrang a mahlakore a mararo a tshwarang le ho emisa dikarolwana tse tiileng. Tlhaho ya HEC ya ho rata metsi e thusa ho monya metsi, e leng se lebisang ho ho eketseha ha viscosity le botsitso bo ntlafetseng ba ho emisoa.
Kabo ea Boholo ba Likaroloana: HEC e ka emisa mefuta e mengata ea likaroloana ka katleho ka lebaka la bokhoni ba eona ba ho theha marang-rang a nang le boholo bo fapaneng ba letlooeng. Ho feto-fetoha hona ho etsa hore e lokele ho emisa likaroloana tse tšesaane le tse mahoashe ka mekhoa e fapaneng.
Boitšoaro ba Thixotropic: Litharollo tsa HEC li bontša boitšoaro ba thixotropic, ho bolelang hore viscosity ea tsona ea fokotseha ha nako e ntse e ea tlas'a khatello e sa khaotseng ea ho lahla 'me lia hlaphoheloa ha khatello e tlosoa. Thepa ena e lumella ho tšolloa le ho sebelisoa habonolo ha ho ntse ho bolokoa botsitso le ho emisoa ha likaroloana tse tiileng.
Botsitso ba pH: HEC e tsitsitse hodima mefuta e mengata ya pH, e leng se etsang hore e lokele ho sebediswa mefuteng ya asiti, e sa nke lehlakore, le ya alkaline ntle le ho beha thepa ya yona ya ho emisoa kotsing.
Litšebeliso tsa HEC ho Litokisetso tsa ho Suspension
Thepa e ntle ea ho emisoa ha HEC e etsa hore e be motsoako oa bohlokoa lihlahisoa tse ngata liindastering tse fapaneng:
Dipente le Dikobo: HEC e sebediswa e le ntho e tenyang le e leketlisang penteng le dikobong tse thehilweng metsing ho thibela ho dula ha dipigment le di-additives. Boitshwaro ba yona ba pseudoplastic bo thusa ho sebediswa ka boreledi le ho kwahelwa ka tsela e tshwanang.
Lihlahisoa tsa Tlhokomelo ea Motho ka Mong: Ka har'a li-shampoo, lihlatso tsa 'mele, le lihlahisoa tse ling tsa tlhokomelo ea motho ka mong, HEC e thusa ho emisa metsoako ea likaroloana tse kang li-exfoliant, li-pigment le li-perfume beads, e leng se netefatsang kabo e lekanang le botsitso ba motsoako.
Mekhoa ea Meriana: HEC e sebelisoa ho li-suspension tsa meriana ho emisa metsoako e sebetsang le ho ntlafatsa ho latsoeha le botsitso ba mefuta ea tekanyo ea metsi a nooang. Ho lumellana ha eona le mefuta e mengata ea li-API (Lisebelisoa tsa Meriana tse Sebetsang) le metsoako e thusang ho etsa hore e be khetho e ratoang bakeng sa li-formulator.
Lihlahisoa tsa Lijo le Lino: HEC e sebelisoa lijong tse kang li-dressing tsa salate, lisoso le lino ho emisa metsoako e sa qhibiliheng joalo ka litlama, linoko le pulp. Tlhaho ea eona ea ho se nkge le ho se latsoehe e etsa hore e be e loketseng ho sebelisoa lijong ntle le ho ama litšobotsi tsa kutlo.
Hydroxyethylcellulose (HEC) ke polymer e feto-fetohang e nang le thepa e ikhethang ea ho emisa, e leng se etsang hore e be motsoako oa bohlokoa mefuteng e mengata ea metsoako ho pholletsa le liindasteri. Bokhoni ba eona ba ho emisa likaroloana tse tiileng ka ho lekana mefuteng ea metsi, hammoho le litšobotsi tse ling tse lakatsehang tse kang ho qhibiliha ha metsi, taolo ea viscosity, le botsitso ba pH, bo etsa hore e be ea bohlokoa bakeng sa baetsi ba metsoako ba batlang ho fihlela lihlahisoa tse tsitsitseng le tsa boleng bo holimo. Ha boiteko ba lipatlisiso le nts'etsopele bo ntse bo tsoela pele, ts'ebeliso ea HEC mefuteng ea ho emisa e lebelletsoe ho atoloha ho ea pele, e khanna boqapi le ho ntlafatsa ts'ebetso ea sehlahisoa makaleng a fapaneng.
Nako ea poso: Mots'eanong-09-2024