1. i-hygroscopicity
I-Carboxymethylcellulose sodium CMC inokumuncwa kwamanzi okufanayo njengamanye amaglue ancibilikayo emanzini.Ibhalansi yomswakama wayo iyanda ngokwanda komswakama futhi yehla ngokunyuka kwezinga lokushisa.Lapho i-DS iphakeme, kuba mkhulu umswakama womoya, kanye nomkhiqizo Umunca kakhulu ukumuncwa kwamanzi.Uma isikhwama sivulwa futhi sibekwe emoyeni onomswakama ophezulu isikhathi esithile, umswakama waso ungafinyelela ku-20%.Lapho okuqukethwe kwamanzi kungu-15%, uhlobo lwempushana lomkhiqizo ngeke lushintshe.Lapho okuqukethwe kwamanzi kufinyelela ku-20%, ezinye izinhlayiya zizoqoqana futhi zinamathele komunye nomunye, zinciphise uketshezi lwempuphu.I-CMC izokhula ngesisindo ngemva kokumunca umswakama, ngakho-ke eminye imikhiqizo engapakishiwe kufanele ifakwe ezitsheni ezingangeni moya noma igcinwe endaweni eyomile.
2. I-Carboxymethyl Cellulose Sodium CMC Ihlakaziwe
I-Carboxymethylcellulose sodium CMC, njengamanye ama-polymers ancibilika emanzini, ibonisa ukuvuvukala ngaphambi kokuncibilika.Lapho inani elikhulu lekhambi le-carboxymethylcellulose sodium CMC lidinga ukulungiswa, uma inhlayiya ngayinye ivuvukele ngendlela efanayo, khona-ke uMkhiqizo uhlakazeka ngokushesha.Uma isampula iphonswa emanzini ngokushesha futhi inamathele kubhlokhi, "iso lenhlanzi" lizokwakhiwa.Okulandelayo kuchaza indlela yokuqedwa ngokushesha kwe-CMC: kancane kancane faka i-CMC emanzini ngaphansi kokunyakaziswa okumaphakathi;I-CMC ihlakazwa ngaphambili nge-solvent encibilikayo emanzini (njenge-ethanol, i-glycerin), bese ingeza amanzi kancane kancane ngaphansi kokugqugquzela okuphakathi;Uma ezinye izithasiselo eziyimpuphu zidinga ukungezwa kwisixazululo, qala uhlanganise izithasiselo kanye ne-CMC powder, bese ufaka amanzi ukuze uhlakaze;ukuze kube lula kubasebenzisi, imikhiqizo esheshayo ye-granule kanye nempushana iyaqaliswa.
3. I-Rheology ye-Sodium Carboxymethyl Cellulose CMC Solution
Isixazululo se-Sodium carboxymethyl cellulose CMC siwuketshezi olungeyona i-Newtonian, olubonisa i-viscosity ephansi ngesivinini esikhulu, okusho ukuthi, ngoba inani le-viscosity ye-sodium carboxymethyl cellulose CMC incike ezimweni zokulinganisa, ngakho "i-viscosity ebonakalayo" isetshenziselwa ukuchaza imvelo.
Kuboniswa kumdwebo we-rheological curve: Imvelo yoketshezi olungeyona i-Newtonian ukuthi ubuhlobo phakathi kwesilinganiso sokugunda (isivinini sokujikeleza ku-viscometer) namandla okugunda (i-torque ye-viscometer) akubona ubuhlobo bomugqa, kodwa ijika.
Isixazululo seCarboxymethyl cellulose sodium CMC uketshezi oluyi-pseudoplastic.Lapho ukala i-viscosity, isivinini sokujikeleza sishesha, sincane i-viscosity elinganiselwe, okubizwa ngokuthi umphumela wokunciphisa i-shear.
4. I-Carboxymethyl Cellulose Sodium CMC Viscosity
1) I-viscosity kanye ne-avareji degree of polymerization
I-viscosity yesisombululo se-CMC ye-sodium carboxymethylcellulose ikakhulukazi incike ezingeni eliphakathi le-polymerization lamaketanga e-cellulose akha uhlaka.Kukhona cishe ubudlelwano bomugqa phakathi kwe-viscosity kanye ne-avareji degree of polymerization.
2) Viscosity kanye okuhlushwa
Ubudlelwano phakathi kwe-viscosity nokugxila kwezinye izinhlobo ze-sodium carboxymethylcellulose CMC.I-viscosity kanye nokugxila cishe ku-logarithmic.Isixazululo se-sodium carboxymethyl cellulose CMC singakhiqiza i-viscosity ephezulu kakhulu ekugxilweni okuphansi, lesi sici senza i-CMC isetshenziswe njenge-thickener enhle kakhulu ekusetshenzisweni.
3) Viscosity kanye lokushisa
I-viscosity yesisombululo samanzi se-carboxymethylcellulose sodium CMC iyancipha ngokunyuka kwezinga lokushisa, kungakhathaliseki ukuthi hlobo luni nokugxilisa ingqondo, inkambiso ye-viscosity yesisombululo kanye nejika lobudlelwane bokushisa ngokuyisisekelo kuyafana.
4) Viscosity kanye pH
Lapho i-pH ingu-7-9, i-viscosity yesisombululo se-CMC ifinyelela ubukhulu bayo futhi izinzile kakhulu.I-viscosity ye-sodium carboxymethylpyramid ngeke ishintshe kakhulu phakathi kwebanga le-pH lika-5-10.I-CMC incibilika ngokushesha ezimeni ezine-alkali kunezimo ezingathathi hlangothi.Uma i-pH>10, izobangela i-CMC ukuthi yehlise isithunzi futhi yehlise i-viscosity.Uma i-asidi yengezwa kusixazululo se-CMC, ukuzinza kwesixazululo kuyancishiswa ngoba i-H+ esixazululweni ithatha indawo ye-Na+ echungechungeni lwamangqamuzana.Kusixazululo esiqinile se-asidi (pH=3.0-4.0) i-semi-sol iqala ukwakha, okunciphisa i-viscosity yesisombululo.Lapho i-pH<3.0, i-CMC iqala ukungancibiliki ngokuphelele emanzini futhi yakhe i-CMC acid.
I-CMC enezinga eliphezulu lokushintsha inamandla ekumelaneni ne-asidi ne-alkali kune-CMC ene-DS ephansi;I-CMC ene-viscosity ephansi inamandla ngokumelana ne-asidi ne-alkali kune-CMC ene-viscosity ephezulu.
Isikhathi sokuthumela: Jan-28-2023