I-methylcellulose (MC) iyinto evamile ye-polythering materises impahla ye-polymes, i-ether eguquliwe etholwe yi-methylating yemvelo yemvelo. Ngenxa yezakhiwo zayo ezikhethekile zomzimba nezamakhemikhali, zisetshenziswa kabanzi ekwakheni, ukudla, umuthi, izimonyo, iphepha kanye nezimbobo.
1. Ukuhlukaniswa ngezinga lokufaka esikhundleni
Izinga lokufakwa esikhundleni (DS) libhekisela kunani eliphakathi lamaqembu ama-hydroxyl afakwe esikhundleni samaqembu we-methyl kuyunithi ngalinye le-glucose e-methylcellulose. Kunamaqembu ama-3 hydroxyl kwindandatho ngayinye ye-glucose ye-molecule ye-cellulose engathathelwa indawo ngamaqembu we-methyl. Ngakho-ke, izinga lokufaka esikhundleni se-methylcellulose lingahluka kusuka ku-0 liye ku-3. Ngokwe-methylcellulose ngokwezinga lezigaba ezimbili, izinga eliphakeme lokufakwa esikhundleni kanye nesilinganiso esiphansi sokufakwa esikhundleni.
I-degree ephezulu yokufaka esikhundleni se-methylcellulose (DS> 1.5): Lolu hlobo lomkhiqizo lunesilinganiso esiphakeme se-methyl, ngakho-ke kungama-hydrophopobic aphansi, ine-solubility ephansi kanye nokuphikiswa okuhle kwamanzi. Ngokuvamile kusetshenziswa ezintweni zokwakha, izimbobo kanye nezinye izikhathi ezidinga isilinganiso esithile se-hydrophopobicity.
Izinga eliphansi lokungena esikhundleni se-methylcellulose (DS <1.5): Ngenxa yokufakwa esikhundleni se-methyl, lolu hlobo lomkhiqizo lungezelwe ngaphezulu kwe-hydrophilic, lune-soubelity engcono futhi lungachithwa emanzini abandayo. I-methylcellulose ephansi ephansi isetshenziswa kabanzi kuzimboni zokudla kanye nemithi yezemithi njenge-smilener, emulsifier kanye ne-stabilizer.
2. Ukuhlukaniswa ngokusetshenziswa
Ngokuya ngokusetshenziswa kwe-methylcellulose emikhakheni ehlukene, kungahlukaniswa izigaba ezimbili: izimboni ze-methylcellulose kanye nokudla kanye ne-methylcellulose.
I-Industrial Methylcellose: Isetshenziswa kakhulu ekwakheni, ukumboza, ubumbano, ubumbano, ama-ceramics kanye nezinye izimboni njengomuntu ozokwakha, njll. Embonini yezokwakha, njll. Embonini yezokwakha kanye ne-gypsum ukuthuthukisa ukusebenza kokwakha kanye ukuqina; Embonini yezambatho, i-methylcellulose ingakhuphula ukuqina kanye nokungafani kwezimbozo.
Ukudla ne-Pharmaceutical Methyllellulose: Ngenxa yezimpahla zayo ezingezona zobungozi nezengozi, i-methylcellulose isetshenziswa njengesengezo ekudleni nasemithini. Ekudleni, i-methylcellulose iyisikhulu esivamile ne-emulsifier engazinza isakhiwo sokudla futhi ivikele ukuhlukaniswa noma ukwahlukana; Ensimini yezemithi, i-methylcellulose ingasetshenziswa njengegobolondo le-capsule, ophethe izidakamizwa, futhi futhi inomsebenzi wezidakamizwa zokukhipha okuqhubekayo. Ukusetshenziswa kwayo nokuphepha kwenza i-methylcellose ithandwa kakhulu kule mikhakha emibili.
3. Ukuhlukaniswa nge-solubity
I-Methylcellose ihlukaniswe ngezigaba ezimbili ngokuya nge-solubity: uhlobo lwamanzi abandayo kanye nohlobo lwe-organic solvent incibilika.
Amanzi abandayo aneluble methylcellose: Lolu hlobo lwe-methylcellulose lungachithwa emanzini abandayo ukwakha isixazululo esibonakalayo, esibonakalayo ngemuva kokuchithwa. Imvamisa isetshenziswa emikhakheni yokudla kanye nemithi yezemithi njengomukhulu noma ifilimu yangaphambili. I-solubity yalolu hlobo lwe-methylcellulose incipha ngokuthuthuka kokushisa, ngakho-ke lesi sici singasetshenziselwa ukulawulwa kokwakha lapho kusetshenziswa embonini yezokwakha.
I-Organic solvent influble methylcellose: Lolu hlobo lwe-methylcellulose lungachithwa ku-organic solvents futhi luvame ukusetshenziswa kupende, ukumboza kanye nemikhakha yezimboni edinga imidiya yesigaba se-organic. Ngenxa yezakhiwo zayo ezinhle zefilimu kanye nokumelana kwamakhemikhali, kufanelekile ukusetshenziswa ngaphansi kwezimo ezinzima zezimboni.
I-4. Ukuhlukaniswa ngesisindo se-molecular (i-viscosity)
Isisindo samangqamuzana se-methylcellulose sinomthelela obalulekile kwizakhiwo zayo ezibonakalayo, ikakhulukazi ukusebenza kwe-viscosity kwisixazululo. Ngokwesisindo se-molecular, i-methylcellulose ingahlukaniswa ngohlobo oluphansi lwe-viscosity nohlobo oluphezulu lwe-viscosity.
I-viscosite ephansi ye-methylcellulose Imvamisa isetshenziswa ekudleni, umuthi kanye nezimonyo, ikakhulukazi nge-emulsation, ukumiswa kanye nokuqina. I-Vissusity ephansi i-methylcellulose ingagcina uketshezi oluhle nokufana, futhi ilungele izinhlelo zokusebenza ezidinga izixazululo eziphansi.
I-Vissusity ephezulu ye-methylcellulose: Inesisindo esikhulu samangqamuzana futhi yakha isixazululo esiphakeme kakhulu ngemuva kokuchithwa. Ivame ukusetshenziswa ezintweni zokwakha, izimbobo kanye nezinamathekisi zezimboni. I-Vissusity ephezulu ye-methylcellulose ingakhuphula ngempumelelo amandla omshini, gqoka ukumelana nokunamathela kwesixazululo, ngakho-ke isetshenziswa kabanzi ezintweni ezidinga amandla aphezulu kanye nokuphikiswa okuphezulu.
I-5. Ukuhlukaniswa ngezinga lokuguqulwa kwamakhemikhali
I-methylcellulose iyi-cellulose eguqulwe ngamakhemikhali. Ngokwendlela yokuguqulwa kanye ne-degree, ingahlukaniswa ibe yi-methyl cellulose eyodwa kanye ne-composefied modified cellulose.
I-Methyl Cellulose eyodwa: Kubhekiswa ku-cellulose izithathekisa ezifakwe esikhundleni se-methyl kuphela. Lolu hlobo lomkhiqizo lunezici eziqinile zomzimba nalomakhemikhali, kanye ne-solubeni, ukuqina kanye nezakhiwo ezakha amafilimu zihle.
I-Composeite Modified celvule Isibonelo, i-hydroxypropyll methylcellulose (HPMC) kanye ne-carboxymethyl cellulose (CMC). Lawa maselula ahlanganisiwe aguqulwe ngokuvamile abe ne-solubility engcono yamanzi, ukumelana nokushisa nokuqina, futhi angazivumelanisa nezimo ezibanzi zezidingo zezimboni.
6. Ukuhlukaniswa ngemboni yohlelo lokusebenza
Ukusetshenziswa okubanzi kwe-methylcellulose kukuvumela ukuthi ihlukaniswe ngokwezimpawu zohlelo lokusebenza ezimbonini ezahlukene.
Imboni yezokwakha i-methylcellulose: ikakhulukazi esetshenziswa ezintweni ezisuselwa ku-monce kanye ne-gypsum njenge-retainer yamanzi kanye nokuqina. Kungathuthukisa ukusebenza kwezinto zokwakha, ukuvimbela ukulahleka kwamanzi kusenesikhathi, futhi kwandise amandla okusebenza kwemikhiqizo eqediwe.
Imboni yokudla i-methylcellulose: njenge-emulsifier, isikhulisi ne-stabilizer ekusebenzeni kokudla. Kungavimbela ukulahleka kwamanzi, kuthuthukise ukunambitheka kanye nokwakheka kokudla, futhi kwandise impilo yeshelufu yokudla.
Umkhakha wezemithi i-methylcellulose: Njenge-bhethisi lethebhulethi noma izinto ezisetshenziselwa izidakamizwa eziqhubekayo. I-methylcellulose nayo ingasetjenziswa lapho kulungiswa izidakamizwa zesisu eziphephile futhi ezisebenzayo zezidakamizwa.
Imboni yezimonyo zemvelo ye-methylcellulose: Kumikhiqizo yokunakekelwa kwesikhumba kanye nezimonyo, i-methylcellulose isetshenziswa njengesikhulu, i-eMulsifier kanye ne-moisturizer ukusiza imikhiqizo yakha umthelela onobuthakathaka nobushelelezi ngenkathi kuqhubeka umphumela wokuthengwa.
Ngamafuphi, kunezindlela eziningi zokuhlukanisa i-methylcellulose, ezingahlukaniswa ngokwezimpawu zalo zezokwakheka zamakhemikhali, noma ngokuya ngezinkundla zayo zohlelo lokusebenza kanye nezakhiwo ze-solubity. Lezi zindlela ezahlukahlukene zokuhlukaniswa zisisiza ukuthi siqonde kangcono izici nemisebenzi ye-methylcellulose, futhi sinikeze ngesisekelo sethiyori sohlelo lokusebenza emikhakheni ehlukene.
Isikhathi Sokuthumela: Oct-23-2024