Carboxymethyl cellulose (CMC) ndi polima wokhala ndi mtengo wofunikira m'mafakitale. Ndi madzi osungunuka anionic cellulose ether omwe amachokera ku cellulose yachilengedwe. Ma cellulose ndi amodzi mwa ma polima achilengedwe omwe amapezeka kwambiri m'chilengedwe ndipo ndiye gawo lalikulu la makoma a cell cell. Ma cellulose pawokha amakhala ndi kusungunuka koyipa m'madzi, koma kudzera mukusintha kwamankhwala, mapadi amatha kusinthidwa kukhala zotumphukira ndi kusungunuka kwamadzi bwino, ndipo CMC ndi imodzi mwa izo.
Mapangidwe a ma cell a CMC amapezeka popanga gawo la hydroxyl (-OH) la molekyulu ya cellulose yokhala ndi chloroacetic acid (ClCH2COOH) kuti apange carboxymethyl substituent (-CH2COOH). Mapangidwe a CMC amakhalabe ndi β-1,4-glucose chain kapangidwe ka cellulose, koma magulu ena a hydroxyl momwemo amasinthidwa ndi magulu a carboxymethyl. Chifukwa chake, CMC imasunga mawonekedwe a polymer chain of cellulose ndipo imakhala ndi magwiridwe antchito a gulu la carboxymethyl.
Chemical katundu wa CMC
CMC ndi polima anionic. Popeza gulu la carboxyl (-CH2COOH) m'mapangidwe ake limatha kutulutsa ma ioni kuti apange ma charger mu njira yamadzi, CMC imatha kupanga njira yokhazikika ya colloidal ikasungunuka m'madzi. Kusungunuka kwamadzi ndi kusungunuka kwa CMC kumakhudzidwa ndi digiri ya m'malo (DS) ndi digiri ya polymerization (DP). Mlingo wolowa m'malo umanena za kuchuluka kwa magulu a hydroxyl osinthidwa ndi magulu a carboxyl pagawo lililonse la shuga. Nthawi zambiri, kuchuluka kwa m'malo kukakhala kokwera, kusungunuka kwamadzi kwabwinoko. Kuphatikiza apo, kusungunuka ndi kukhuthala kwa CMC pamitundu yosiyanasiyana ya pH ndizosiyananso. Nthawi zambiri, zimawonetsa kusungunuka bwino komanso kukhazikika pansi pazandale kapena zamchere, pomwe pansi pa acidic, kusungunuka kwa CMC kudzachepa ndipo kumatha kutsika.
Katundu wakuthupi wa CMC
Kukhuthala kwa njira ya CMC ndi imodzi mwazinthu zofunika kwambiri zakuthupi. Kukhuthala kwake kumagwirizana ndi zinthu zambiri, kuphatikiza ndende ya yankho, kuchuluka kwa m'malo, digiri ya polymerization, kutentha ndi pH mtengo. Izi kukhuthala khalidwe CMC chimathandiza kusonyeza thickening, gelling ndi kukhazikika zotsatira zambiri ntchito. The mamasukidwe akayendedwe a CMC alinso makhalidwe a kukameta ubweya kupatulira, ndiko kuti, mamasukidwe akayendedwe adzachepa pansi mkulu kukameta ubweya mphamvu, zomwe zimapangitsa izo zopindulitsa ntchito zina zomwe zimafuna fluidity mkulu.
Malo ogwiritsira ntchito CMC
Chifukwa cha mawonekedwe ake apadera akuthupi ndi mankhwala, CMC imagwiritsidwa ntchito kwambiri m'magawo ambiri. Nawa ena mwa madera ofunsira:
Makampani azakudya: CMC imagwiritsidwa ntchito ngati thickener, stabilizer ndi emulsifier muzakudya. Ikhoza kusintha maonekedwe ndi kukhazikika kwa chakudya, monga ntchito wamba mu ayisikilimu, yogurt, odzola ndi msuzi.
Makampani opanga mankhwala: CMC imagwiritsidwa ntchito ngati chothandizira pamankhwala komanso zomatira pamapiritsi omwe ali m'munda wamankhwala. Amagwiritsidwanso ntchito ngati moisturizer ndi filimu-kupanga wothandizira pabalaza kuvala.
Mankhwala atsiku ndi tsiku: Pazinthu zatsiku ndi tsiku monga mankhwala otsukira mano, shampu, zotsukira, ndi zina zotero, CMC imagwiritsidwa ntchito ngati thickener, suspending agent ndi stabilizer kuti mankhwalawo akhalebe ndi maonekedwe abwino ndi ntchito.
Kubowola mafuta: CMC imagwiritsidwa ntchito ngati chowonjezera kukhuthala komanso kusefera mumadzi obowola mafuta, omwe amatha kusintha mawonekedwe amadzi obowola ndikuletsa kulowa kwambiri kwamadzi obowola.
Mafakitale opangira nsalu ndi mapepala: M'makampani opanga nsalu, CMC imagwiritsidwa ntchito ngati nsalu zamkati ndi zomaliza, pomwe pamakampani opanga mapepala, imagwiritsidwa ntchito ngati cholimbikitsira komanso choyezera mapepala kuti apange mphamvu komanso kusalala kwa pepala.
Chitetezo ndi chitetezo cha chilengedwe
CMC ndi zinthu zachilengedwe zochezeka zomwe zitha kuonongeka ndi tizilombo tating'onoting'ono m'chilengedwe, chifukwa chake sizingayambitse kuipitsa kwanthawi yayitali kwa chilengedwe. Kuphatikiza apo, CMC ili ndi kawopsedwe kakang'ono komanso chitetezo chokwanira, ndipo ili ndi mbiri yabwino yachitetezo pazakudya ndi mankhwala. Komabe, chifukwa cha kuchuluka kwake komanso kagwiritsidwe ntchito kake, chidwi chiyenera kuperekedwabe pakukonza zinyalala za mankhwala zomwe zitha kupangidwa panthawi yopanga.
Carboxymethyl cellulose (CMC) ndi polima anionic sungunuka m'madzi. CMC yopezedwa ndi kusinthidwa kwamankhwala imakhalabe ndi zinthu zabwino kwambiri zama cellulose achilengedwe pomwe imakhala ndi kusungunuka kwamadzi bwino komanso mawonekedwe apadera athupi ndi mankhwala. Ndi makulidwe ake, gelling, kukhazikika ndi ntchito zina, CMC yakhala ikugwiritsidwa ntchito kwambiri m'mafakitale ambiri monga chakudya, mankhwala, mankhwala a tsiku ndi tsiku, kubowola mafuta, nsalu ndi kupanga mapepala. Kutetezedwa kwake kwachilengedwe komanso chitetezo kumapangitsanso kukhala chowonjezera chokondedwa muzinthu zambiri.
Nthawi yotumiza: Aug-23-2024