Carboxymethyl Cellulose (ChiRungu: Carboxymethyl Cellulose, CMC kwenguva pfupi) chiwedzere chekudya chinowanzo shandiswa, uye munyu wayo wesodium (sodium carboxymethyl cellulose) unowanzo shandiswa semukobvu nekunamira.
Carboxymethyl cellulose inonzi indasitiri monosodium glutamate, iyo inoshandiswa zvakanyanya mukugadzirwa kwemaindasitiri uye inounza kukosha kukuru kwekushandisa kune akasiyana minda yekugadzira. Carboxymethyl cellulose chinhu chehupfu, chisina chepfu, asi chiri nyore kunyungudika mumvura. Inonyungudika mumvura inotonhora uye mumvura inopisa, asi haina kunyungudika muorganic solvents. Ichava mvura inopenya mushure mekunyunguduka, asi viscosity ichasiyana nekuda kwekukwira kwekushisa nekudonha. Nekuda kwezvivakwa zvayo zvakakosha, kune zvakawanda zvakakosha zvinodiwa mukuchengetedza uye kutakura.
Zvenyama uye zvemakemikari zvinhu
Carboxymethyl cellulose chinhu chichena kana chakareruka yeyero, chisina kunhuhwirira, chisingarapike, hygroscopic granules, hupfu kana fibre yakanaka.
※Preparation
Carboxymethylcellulose inogadzirwa ne base-catalyzed reaction ye cellulose ine chloroacetic acid. Polar (organic acid) mapoka ecarboxyl anoita kuti cellulose inyungudika uye iite makemikari. Mushure mekuita kwekutanga, musanganiswa wakabuda wakaburitsa inenge 60% CMC pamwe ne40% munyu (sodium chloride uye sodium glycolate). Chigadzirwa chacho chinodaidzwa kuti maindasitiri CMC yekuchenesa. Minyu iyi inobviswa pachishandiswa imwe nzira yekunatsa kugadzira CMC yakachena kuti ishandiswe muzvokudya, mishonga uye dentifrices (mushonga wemazino). Epakati "semi-kucheneswa" mamakisi anogadzirwawo, anowanzo shandiswa mumapepa manyorerwo senge kudzoreredzwa kwezvinyorwa zvakachengetwa. Izvo zvinoshanda zveCMC zvinoenderana nehuwandu hwekutsiviwa kweiyo cellulose chimiro (kureva, vangani hydroxyl mapoka anotora chikamu mukutsiva reaction), pamwe nehurefu hwemaketani eiyo cellulose backbone chimiro uye dhigirii rekuunganidzwa kweselulosi musana. . Carboxymethyl inotsiva.
※Application
Carboxymethylcellulose inoshandiswa muchikafu semugadzirirwo we viscosity kana thickener pasi pe E466 kana E469 (ne enzymatic hydrolysis) uye kudzikamisa emulsions muzvigadzirwa zvakasiyana, kusanganisira ice cream. Icho zvakare chikamu chezvakawanda zvisiri zvechikafu zvigadzirwa senge mushonga wemazino, laxatives, mapiritsi ekudya, pendi-yakavakirwa mvura, pendi, machira, machira ekurongedza, reusable thermal packaging uye akasiyana zvigadzirwa zvemapepa. Inoshandiswa zvakanyanya nekuti yakakwira viscosity, isiri-chepfu uye inowanzoonekwa se hypoallergenic sezvo main source fibers ari softwood huni pulp kana machira edonje. Carboxymethylcellulose inoshandiswa zvakanyanya mune gluten-isina uye yakaderedzwa-mafuta chikafu. Mumachira ekuwachisa, anoshandiswa sevhu rinomisa polima rakagadzirirwa kuisa padonje nemamwe machira e cellulosic, zvichigadzira chipingamupinyi chakashata kune ivhu mudoro rekugezesa. Carboxymethylcellulose inoshandiswa semafuta mumisodzi yekugadzira. Carboxymethylcellulose inoshandiswawo seyakakora mumiriri, semuenzaniso, muindasitiri yekuchera mafuta, iyo iri chikamu chedhaka rekuchera, iyo inoshandiswa seyakagadziriswa viscosity uye mumiriri wekuchengetedza mvura. Semuenzaniso, sodium CMC (Na CMC) yakashandiswa seyakaipa kudzora kurasikirwa kwebvudzi mutsuro. Machira akarukwa akagadzirwa kubva ku cellulose, senge donje kana viscose rayon, anogona kushandurwa kuita CMCs uye kushandiswa mukurapa kwakasiyana siyana.
Nguva yekutumira: Zvita-03-2022