Cellulose ether (CE) ndi gulu la zochokera pakusintha kwa cellulose yosinthika. Cellulose ndiye gawo lalikulu la makhoma a cell, ndipo cellulose okwezeka ndi mikangano angapo omwe amapangidwa chifukwa cha magulu ena a hydroxyl (-Oh) mu cellulose. Amagwiritsidwa ntchito kwambiri m'minda yambiri monga zopangira, mankhwala, chakudya, zodzola, ndi zina zambiri chifukwa cha mankhwala awo mwakuthupi komanso mankhwala.
1. Gulu la cellulose etrase
Cellulose eders amatha kugawidwa m'mitundu yosiyanasiyana malinga ndi mitundu ya magalamure mu kapangidwe ka mankhwala. Gulu lodziwika bwino limakhazikitsidwa chifukwa cha kusiyana kwa maganti. Ma cellulose omwe amafala nawo ali motere:
Methyl cellulose (MC)
Methyl cellulose imapangidwa ndikusintha gawo la hydroxyl wa molekyulu ya cellulose ndi methyl (-ch₃). Ili ndi kukula kwake, kupanga mafilimu komanso kugwiritsa ntchito katundu ndipo imagwiritsidwa ntchito pomanga, zokutira, mankhwala opangira mankhwala ndi mafakitale.
Hydroxypropyl methylcellulose (hpmc)
Hydroxypylropyl ndi ethelluose wamba, yomwe imagwiritsidwa ntchito kwambiri pazomangira, zamankhwala, mankhwala tsiku lililonse ndi minda yazakudya chifukwa cha kukhazikika kwa madzi. HPMC ndi ma cellulose ether ether ndi katundu wa madzi, kukula ndi kukhazikika.
Carboxymethyl cellulose (cmc)
Carboxymethyl cellulose ndi cellulose ya aminelose ether ether poyambitsa carboxymethyl (-CK₂cooh) mamolekyulu. CMC ili ndi madzi abwino kwambiri amadzi ndipo nthawi zambiri imagwiritsidwa ntchito ngati thiccener, okhazikika ndi kuyimitsa wothandizira. Imakhala ndi gawo lofunikira mu chakudya, mankhwala ndi zodzola.
Ethyl cellulose (EC)
Cellose Cellose imapezeka ndikusintha gulu la hydroxyl mu cellulose ndi ethyl (-ch₂ch₃). Ili ndi hydrophobicity yabwino ndipo nthawi zambiri imagwiritsidwa ntchito ngati njira yolumikizira filimu ndikuwongolera zida zomasulira m'makampani opanga mankhwala.
2. Mphamvu zathupi ndi mankhwala a cellulose et
Zovuta zakuthupi ndi zamankhwala za cellulose zimagwirizana kwambiri ndi zinthu monga mtundu wa ethel ether ether ether ether, mtundu wa gawo la mpweya wabwino. Malo ake akuluakulu amaphatikizapo izi:
Madzi kususuka ndi kusungunuka
Ma cellulose ambiri amakhala ndi madzi osungunuka ndi madzi abwino ndipo amatha kusungunuka m'madzi ozizira kapena otentha kuti apange yankho la colloidal. Mwachitsanzo, hpmc, cmc, etc. imasungunuka mwachangu m'madzi kuti mupange yankho lalitali, lomwe limagwiritsidwa ntchito kwambiri mu zochitika zofunsira monga zogwiritsira ntchito zogwirira ntchito monga kukula monga kukula, ndikuyimitsidwa, ndi mapangidwe filimu.
Kukula ndi mawonekedwe a makanema
Cellulose eders ali ndi katundu wabwino kwambiri ndipo amatha kuwonjezera ma viniyo a mayankho am'madzi. Mwachitsanzo, kuwonjezera zida zomangamanga zitha kusintha mafowondo ndi kugwirira ntchito matope ndikuwonjezera zida zankhondo. Nthawi yomweyo, cellulose eders ali ndi katundu wabwino wopanga mafilimu ndipo amatha kupanga filimu yoteteza yoteteza padziko lapansi, motero amagwiritsidwa ntchito kwambiri pazokutira ndi zokutira mankhwala.
Kusungidwa kwamadzi komanso kukhazikika
Cellulose eders nawonso amakhalanso ndi vuto losungitsa madzi, makamaka m'munda womanga. Cellulose nthawi zambiri amagwiritsidwa ntchito kukonza madzi osungira cha simenti, kuchepetsa phokoso la matope, ndikuwonjezera moyo wa matope. Mu gawo la chakudya, cmc imagwiritsidwanso ntchito ngati Humectict kuti muchepetse kuyanika.
Kukhazikika kwa mankhwala
Cellulose eders amawonetsa bwino mankhwala a acid, alkali ndi ma electrolyte, ndipo amatha kusunga mawonekedwe awo ndikugwira ntchito m'malo osiyanasiyana. Izi zimawathandiza kugwiritsidwa ntchito m'mafakitale osiyanasiyana osasokoneza mankhwala ena.
3. Kupanga njira ya cellulose ether
Kupanga kwa cellulose ether kumakonzedwa makamaka ndikutsatira ma cellulose achilengedwe. Njira zoyambira zoyambira zimaphatikizapo chithandizo cha ma cellulose, chizindikiritso, kuyeretsa, ndi zina zambiri.
Chithandizo cha Alkirization
Choyamba, cellulose yachilengedwe (monga thonje, nkhuni, etc.) imanyengedwa kuti isinthe gawo la hydroxyl mu clyeluse mchere wambiri.
Kuzindikira
Cellulose pambuyo pa kupembererana ndi wothandizila (monga methyl chloride, ma prop.) kupanga cellulose ether ether ether. Kutengera ndi zomwe zimachitika, mitundu yosiyanasiyana ya cellulose imatha kupezeka.
Kuyeretsa ndi kuyanika
Cellulose eel yopangidwa ndi zomwe zimapangidwa ndizoyeretsedwa, kutsukidwa ndikuuma kuti mupeze ufa kapena granur. Kuyera ndi zinthu zakuthupi za chinthu chomaliza kumatha kuwongoleredwa ndi ukadaulo wotsatira.
4. Ndondomeko zofunsira za cellulose ether
Chifukwa cha kuchuluka kwakomweko ndi mankhwala a cellulose okhazikika, amagwiritsidwa ntchito kwambiri m'mafakitale ambiri. Minda yofunsira ndiyotsatira motere:
Zipangizo Zomanga
Mu gawo lomanga, cellulose yokhazikika imagwiritsidwa ntchito ngati makulidwe ndi othandizira osunga madzi a simenti ndi mankhwala a gypsum. Cellulose et monga hpmc ndipo MC imatha kusintha matope omanga matope, kuchepetsa kuchepa kwa madzi, ndikuwonjezera chotsatsa komanso kukana kukana.
Mankhwala
M'makampani opanga mankhwala, cellosesese yogwiritsidwa ntchito kwambiri yogwiritsidwa ntchito ngati othandizira ogwiritsa ntchito mabala, amamamatira mapiritsi, komanso zida zomasulira. Mwachitsanzo, hpmc nthawi zambiri amagwiritsidwa ntchito kukonza zokutira filimu yogwiritsa ntchito ndipo imakhala ndi mphamvu yomasulidwa bwino.
Chakudya
CMC imagwiritsidwa ntchito ngati thicker, emulsifier, ndi okhazikika m'makampani azakudya. Amagwiritsidwa ntchito kwambiri m'mphepete mwa zakumwa, zinthu zamkaka, ndi zinthu zophika, ndipo zimatha kukonza kukoma komanso kuthira mafuta chakudya.
Zodzikongoletsera ndi mankhwala tsiku lililonse
Cellulose amagwiritsidwa ntchito ngati otsatsa ndi ma emulsifiers ndi okhazikika pama cosmetics ndi mankhwala amtsiku ndi tsiku, omwe amatha kupereka kusinthasintha ndi kapangidwe kake ndi kapangidwe kake. Mwachitsanzo, hpmc nthawi zambiri amagwiritsidwa ntchito mu zinthu monga mano ndi shampoo kuti muwapatse mawonekedwe owoneka bwino komanso kuyimitsidwa kokhazikika.
Zopindulitsa
Mu makampani ovala, cellulosesese yogwiritsidwa ntchito ngati otsatsa, ma filimu a filimu, ndi kuyimilira, zomwe zimatha kukulitsa ntchito yomanga, ndikuwongolera utoto wabwino.
5. Kukula kwa Cellulose etrase
Powonjezera kufunika kwa kutetezedwa kwa chilengedwe, cellulose ether, monga chotsani zinthu zachilengedwe zokonzanso zachilengedwe, zimakhala ndi chitukuko chachikulu. Zachuma zake, kusinthika ndi kusinthasintha kumapangitsa kuti nthawi ikuyembekezeka kugwiritsidwa ntchito kwambiri m'minda ya zobiriwira, zida zowonongeka ndi zida zanzeru mtsogolo. Kuphatikiza apo, cellulose ether imakhalanso yofufuziranso njira ina yothandizira komanso yotukuka kwambiri m'minda yowonjezereka monga injini zapamwamba komanso zida zapamwamba.
Monga mankhwala ofunika mankhwala, cellulose ether ili ndi mtengo woyenera kugwiritsa ntchito. Ndi kusungunuka kwakukulu, kusungidwa kwamadzi, kupanga filimu yopanga mafilimu, imagwira ntchito mokhazikika mu magawo ambiri m'minda momwemo monga kapangidwe kake kapangidwe kake kapangidwe kake kake. M'tsogolomu, popititsa patsogolo ntchito za ukadaulo ndi kulimbikitsa njira zachilengedwe zotetezera, ma cellulose a ethel ether azikhala ochulukirapo ndikupanga zopereka zazikulu zolimbikitsa mafakitale osiyanasiyana.
Post Nthawi: Sep-24-2024