Guhitamo ubwoko butandukanye, viscosities zitandukanye, ingano zingana zingana, dogere zitandukanye za viscosity hamwe no kongeramo ethers ya selile nabyo bigira ingaruka zitandukanye mugutezimbere imikorere yimyunyu yumye. Kugeza ubu, amabuye menshi yo kubumba no guhomeka afite imikorere idahwitse yo gufata amazi, kandi amazi yatandukanijwe nyuma yiminota mike ihagaze. Ni ngombwa rero kongeramo selile ya ether muri sima ya sima.
Muri minisiteri ivanze-yuzuye, mugihe cyose selile nkeya ya selile ishobora kuzamura cyane imikorere ya minisiteri itose, birashobora kugaragara ko ether ya selile ari inyongeramusaruro nyamukuru igira ingaruka kumyubakire ya minisiteri. “
Cellulose ether - ingaruka zinjira mu kirere
Cellulose ether ifite ingaruka zigaragara zo kwinjiza umwuka kubikoresho bishya bishingiye kuri sima. Ether ya selile ifite amatsinda yombi ya hydrophilique (amatsinda ya hydroxyl, ether groupe) hamwe na hydrophobique (matsinda ya methyl, impeta ya glucose), kandi ni surfactant hamwe nibikorwa byo hejuru, bityo bikagira ingaruka zo guhumeka ikirere. Ingaruka yinjira mu kirere ya selile ya ether izatanga umusaruro "umupira", ushobora kunoza imikorere yimikorere yibikoresho bishya bivanze, nko kongera plastike nuburinganire bwa minisiteri mugihe cyo gukora, bifasha gukwirakwiza ikariso. ; bizongera kandi umusaruro wa minisiteri, bigabanye umusaruro wa minisiteri; ariko bizongera ububobere bwibintu byakomye kandi bigabanye imiterere yubukorikori nkimbaraga na moderi ya elastique.
Nka surfactant, selulose ether nayo igira ingaruka zo guhanagura cyangwa gusiga amavuta kuri sima, ibyo bikaba byongera ubwinshi bwibikoresho bishingiye kuri sima hamwe ningaruka zabyo zangiza ikirere, ariko ingaruka zabyo zizagabanya umuvuduko. Ingaruka ya fluidite ni ihuriro rya plastike ningaruka zo kubyimba. Muri rusange, iyo ibiri muri selile ya selile ari bike cyane, imikorere nyamukuru ni plastike cyangwa kugabanya amazi; iyo ibirimo ari byinshi, ingaruka zo kwiyongera kwa selulose ether yiyongera byihuse, kandi ingaruka zayo zo guhumeka zikunda kuba zuzuye. Irerekana rero nk'ingaruka yo kwiyongera cyangwa kwiyongera kw'amazi.
Cellulose Ether - Gusubira inyuma
Cellulose ether izongerera igihe cyo gushiraho paste ya sima cyangwa minisiteri, kandi itinde hydrat kinetics ya sima, ifite akamaro ko kunoza igihe cyo gukora cyibikoresho bivanze bishya, bizamura imiterere ya minisiteri no gutakaza beto yataye igihe, ariko birashoboka nanone bitera gutinda gutera imbere.
Cellulose ether - kubika amazi
Kugumana amazi nigikorwa cyingenzi cya methyl selulose ether, kandi nigikorwa kandi benshi mubakora uruganda rwumye-ruvanze na minisiteri, cyane cyane abo mukarere ka majyepfo bafite ubushyuhe bwinshi, bitondera.
Mu gukora ibikoresho byubaka, cyane cyane ifu yumye yumye, selile ether igira uruhare rudasubirwaho, cyane cyane mugukora minisiteri idasanzwe (minisiteri yahinduwe), nikintu cyingenzi kandi cyingenzi.
Ubukonje, ibipimo, ubushyuhe bwibidukikije hamwe na molekulire ya selile ya ether bigira uruhare runini mubikorwa byo gufata amazi. Mubihe bimwe, uko ubwinshi bwa selulose ether, niko gufata amazi neza; hejuru ya dosiye, nibyiza kubika amazi. Mubisanzwe, selile nkeya ya selile irashobora kunoza cyane gufata amazi ya minisiteri. Iyo igipimo kigeze kuri runaka Iyo urugero rwo gufata amazi rwiyongereye, inzira yo gufata amazi iratinda; iyo ubushyuhe bwibidukikije buzamutse, kubika amazi ya selile ya selile mubisanzwe bigabanuka, ariko ethers zimwe na zimwe zahinduwe na selile zifite amazi meza mugihe cy'ubushyuhe bwinshi; fibre ifite degere zo hasi zo gusimbuza Vegan ether ifite imikorere myiza yo gufata amazi.
Itsinda rya hydroxyl kuri molekile ya selile ya selile na atome ya ogisijeni ku muyoboro wa ether izahuza na molekile y’amazi kugira ngo ihuze hydrogene, ihindure amazi yubusa mu mazi aboshye, bityo bigire uruhare runini mu gufata amazi; molekile y'amazi hamwe na selire ya ether molekulari ya Interdiffusion ituma molekile zamazi zinjira imbere mumurongo wa selulose ether macromolecular kandi zikaba zifite imbaraga zikomeye zihuza, bityo zigakora amazi yubusa, amazi yiziritse, no kunoza uburyo bwo gufata amazi ya sima; selulose ether itezimbere sima nshyashya Imiterere ya rheologiya, imiterere y'urusobekerane rwumuvuduko numuvuduko wa osmotic cyangwa imiterere ya firime ya selireose ether ibuza ikwirakwizwa ryamazi.
Ethers ya selile - kubyimba na thixotropy
Cellulose ether iha minisiteri itose hamwe nubwiza buhebuje, bushobora kongera cyane ubushobozi bwo guhuza hagati ya minisiteri itose nigitereko fatizo, kandi bikanoza imikorere yo kurwanya kugabanuka. Ikoreshwa cyane mugupompa minisiteri, kubumba amatafari hamwe na sisitemu yo gukingira urukuta. Ingaruka yibyibushye ya selile ya selile irashobora kandi kongera ubushobozi bwo kurwanya ikwirakwizwa hamwe nuburinganire bwibikoresho bivanze bishya, bikarinda gusibanganya ibintu, gutandukanya no kuva amaraso, kandi birashobora gukoreshwa muri beto ya fibre, beto yo mumazi na beto yonyine.
Ingaruka yibyibushye ya selile ya ether kubikoresho bishingiye kuri sima biva mubwiza bwumuti wa selile. Mubihe bimwe, niko hejuru ya viscosity ya selulose ether, niko ubwiza bwibintu byahinduwe bishingiye kuri sima, ariko niba ububobere buri hejuru cyane, bizagira ingaruka kumikorere no mumikorere yibikoresho (nko gufatisha icyuma gipompa ). Kwiyoroshya kwa minisiteri no kwikuramo beto, bisaba amazi menshi, bisaba ubukonje buke bwa selile ether. Byongeye kandi, umubyibuho ukabije wa selulose ether bizongera amazi yibikoresho bishingiye kuri sima kandi byongere umusaruro wa minisiteri.
Umuvuduko mwinshi wa selileose ether amazi yo mumazi afite thixotropy nyinshi, nayo nikintu gikomeye kiranga selile ether. Ibisubizo byamazi ya methyl selulose mubisanzwe bifite pseudoplastique na non-thixotropic fluid munsi yubushyuhe bwa gel, ariko ikerekana imiterere ya Newtonian ku gipimo gito. Pseudoplastique yiyongera hamwe nuburemere bwa molekuline cyangwa kwibumbira hamwe kwa selile ya ether, hatitawe ku bwoko bwinsimburangingo no kurwego rwo gusimburwa. Kubwibyo, selile ya ether yo murwego rumwe rwubwiza, ntakibazo MC, HPMC, HEMC, izahora yerekana imiterere imwe ya rheologiya mugihe cyose ubushyuhe nubushyuhe bihoraho. Gele yubaka ikorwa mugihe ubushyuhe buzamutse, kandi tixotropique itemba cyane.
Ubushuhe bwinshi hamwe na selile nkeya ya selile yerekana thixotropy ndetse no munsi yubushyuhe bwa gel. Uyu mutungo ufite akamaro kanini muguhindura kuringaniza no kugabanuka mukubaka inyubako ya minisiteri. Hagomba gusobanurwa hano ko uko ubukonje bwa ether ya selulose, niko gufata amazi neza, ariko uko ubukonje bugenda bwiyongera, niko uburemere bwa molekuline bugereranije na selile ya selile, hamwe no kugabanuka gukwiranye kwayo, bigira ingaruka mbi kuri concentration ya minisiteri nibikorwa byubwubatsi.
Igihe cyo kohereza: Ukuboza-01-2022