Carboxymethyl cellulose (CMC) ipolymer ine kukosha kwemaindasitiri. Iyo inonyungudika mumvura anionic cellulose ether inotorwa kubva kune yakasikwa cellulose. Cellulose ndeimwe yeakanyanya kuwanda organic polima mune zvakasikwa uye ndicho chinhu chikuru chechirimwa masero madziro. Cellulose pachayo haina kunyungudika kwakashata mumvura, asi kuburikidza nekugadzirisa kemikari, cellulose inogona kushandurwa kuita zvinobva kune yakanaka solubility yemvura, uye CMC imwe yacho.
Iyo molecular chimiro cheCMC inowanikwa nekuisa etherifying iyo hydroxyl (-OH) chikamu che cellulose molecule ine chloroacetic acid (ClCH2COOH) kugadzira carboxymethyl substituent (-CH2COOH). Chimiro cheCMC chinochengetedza β-1,4-glucose cheni chimiro che cellulose, asi mamwe emapoka ehydroxyl mairi anotsiviwa nemapoka ecarboxymethyl. Naizvozvo, CMC inochengeta iyo polymer cheni hunhu hweselulosi uye ine mashandiro eboka recarboxymethyl.
Chemical zvimiro zveCMC
CMC ndeye anionic polymer. Sezvo boka recarboxyl (-CH2COOH) muchimiro charo richikwanisa kuita ionize kuburitsa machaji asina kunaka mumushonga wemvura, CMC inogona kugadzira yakagadzikana colloidal mhinduro mushure mekunyungudika mumvura. Kunyungudika kwemvura uye kunyungudika kweCMC kunokanganiswa nedhigirii rayo rekutsiva (DS) uye dhigirii repolymerization (DP). Chiyero chekutsiva chinoreva huwandu hwemapoka ehydroxyl anotsiviwa nemapoka ecarboxyl mune yega yega glucose unit. Kazhinji, iyo yakakwirira dhigirii yekutsiva, zviri nani kunyungudika kwemvura. Uye zvakare, iyo solubility uye viscosity yeCMC pane akasiyana pH kukosha kwakasiyanawo. Kazhinji, inoratidza zvirinani kunyungudika uye kugadzikana pasi pekusarerekera kana alkaline mamiriro, nepo pasi pemamiriro ane acidic, iyo solubility yeCMC inoderera uye inogona kutonaya.
Zvenyama zvimiro zveCMC
Iyo viscosity yeCMC mhinduro ndeimwe yeayo akakosha emuviri zvimiro. Viscosity yayo inoenderana nezvakawanda zvinhu, zvinosanganisira kugadziriswa kwemhinduro, dhigirii rekutsiva, dhigirii repolymerization, tembiricha uye pH kukosha. Iyi viscosity hunhu hweCMC inoita kuti iratidze kukora, gelling uye kudzikamisa mhedzisiro mumashandisirwo mazhinji. Iyo viscosity yeCMC zvakare ine hunhu hwekuveura kutetepa, ndiko kuti, viscosity inodzikira pasi pesimba reshear, izvo zvinoita kuti zvive zvinobatsira mune mamwe maapplication anoda yakakwira fluidity.
Nzvimbo dzekushandisa dzeCMC
Nekuda kwekusiyana kwayo kwemuviri uye makemikari zvimiro, CMC inoshandiswa zvakanyanya muminda yakawanda. Heano dzimwe dzenzvimbo huru dzekushandisa:
Indasitiri yechikafu: CMC inoshandiswa seyakakora, stabilizer uye emulsifier muindasitiri yechikafu. Inogona kuvandudza magadzirirwo uye kugadzikana kwechikafu, senge yakajairika maapplication mu ice cream, yogati, jelly uye muto.
Indasitiri yemishonga: CMC inoshandiswa sechinhu chinobatsira zvinodhaka uye chinonamira pamapiritsi mumunda wemishonga. Inoshandiswawo se moisturizer uye film-forming agent mumaronda ekupfeka.
Makemikari ezuva nezuva: Muzvigadzirwa zvezuva nezuva senge mushonga wemazino, shampoo, detergent, nezvimwewo, CMC inoshandiswa seyakakora, inomisa mumiririri uye yakagadzikana kubatsira chigadzirwa kuchengetedza chitarisiko chakanaka uye kuita.
Kuchera oiri: CMC inoshandiswa seye viscosity enhancer uye filtration agent mumafuta ekuchera zvinwiwa, izvo zvinogona kuvandudza rheological zvimiro zvezvinwiwa zvekuchera uye kudzivirira kupinda kwakanyanya kwemvura yekuchera.
Maindasitiri eMachira uye ekugadzira mapepa: Muindasitiri yemachira, CMC inoshandiswa kune machira pulp uye kupedzisa vamiririri, nepo muindasitiri yekugadzira mapepa, inoshandiswa seanosimbisa ajenti uye saizi ajenti yepepa kuvandudza kusimba uye kutsetseka kwepepa.
Kuchengetedzwa kwezvakatipoteredza uye kuchengeteka
CMC inzvimbo ine hushamwari hwezvakatipoteredza inogona kuderedzwa nehutachiona muzvisikwa, saka haizokonzeri kusvibiswa kwenguva refu kune zvakatipoteredza. Pamusoro pezvo, CMC ine muchetura wakaderera uye kuchengetedzeka kwakanyanya, uye ine yakanaka kuchengetedza rekodhi mukudya nekushandisa kwemishonga. Zvakadaro, nekuda kwekugadzirwa kwayo kukuru uye kushandiswa, kutarisisa kunofanirwa kubhadharwa pakurapwa kwemarara emakemikari anogona kugadzirwa panguva yekugadzira kwayo.
Carboxymethyl cellulose (CMC) inoshanda zvakasiyana-siyana mvura-inonyungudika anionic polymer. CMC inowanikwa nekugadziriswa kwemakemikari inochengetedza yakanakisa zvimiro zvechisikigo cellulose iine yakanaka solubility yemvura uye yakasarudzika yemuviri nemakemikari zvimiro. Nekukora kwayo, gelling, kudzikamisa uye mamwe mabasa, CMC yakashandiswa zvakanyanya mumaindasitiri mazhinji akadai sechikafu, mushonga, makemikari ezuva nezuva, kuchera mafuta, machira uye kugadzira mapepa. Kuchengetedzwa kwayo kwezvakatipoteredza uye kuchengetedzeka kunoitawo kuti ive iyo inosarudzika yekuwedzera mune zvakawanda zvigadzirwa.
Nguva yekutumira: Aug-23-2024