I-sodium carboxymethyl cellulose (CMC) isetyenziswa ngokubanzi kwi-cellulose derivative enezicelo ezahlukeneyo kumashishini ahlukeneyo.Ukusulungeka kwe-CMC kudlala indima ebalulekileyo ekumiseleni impumelelo kunye nokusebenza kwayo kwizicelo ezahlukeneyo.Eli phepha lijolise ekuboneleleni ngokubanzi iindlela ezahlukeneyo ezisetyenziselwa ukugweba ukucoceka kwe-sodium carboxymethyl cellulose.Iindlela zokuhlalutya ezifana ne-degree of substitution (DS) uhlalutyo, uvavanyo lwe-viscosity, uhlalutyo lwe-elemental, ukuzimisela komxholo wokufuma, kunye nohlalutyo lokungahlambuluki zixoxwa ngokubanzi.Ngokusebenzisa ezi ndlela, abavelisi, abaphandi, kunye nabasebenzisi banokuhlola umgangatho kunye nokuthembeka kweemveliso zeCMC, zibenza bakwazi ukwenza izigqibo ezisekelwe kumanqanaba afunekayo okucoceka.
I-Sodium carboxymethyl cellulose (CMC) sisilulo seselulosi esifunyenwe ngokuguqulwa kweekhemikhali zeselulosi, ngokuyintloko ephuma kwintlama yomthi okanye umqhaphu.I-CMC ifumana izicelo ezibanzi kumashishini anjengokutya, amayeza, izithambiso, amalaphu, kunye nokugrumba ioyile ngenxa yeempawu zayo ezizodwa.Nangona kunjalo, ukucoceka kweCMC kuchaphazela kakhulu ukusebenza kwayo kunye nokufaneleka kwezicelo ezithile.Ke ngoko, iindlela ezahlukeneyo zokuhlalutya ziye zaphuhliswa ukugweba ubunyulu beCMC ngokuchanekileyo.
Uhlalutyo lwesidanga soTshintsho (DS):
Umgangatho wokutshintshwa yiparameter ebalulekileyo esetyenziselwa ukuvavanya ukucoceka kweCMC.Imele iavareji yenani lamaqela e-carboxymethyl kwiyunithi yeselulosi kwi-molecule ye-CMC.Ubuchule obufana ne-nuclear magnetic resonance (NMR) spectroscopy kunye neendlela zokuthi thaca zingasetyenziswa ukumisela ixabiso le-DS.Amaxabiso aphezulu e-DS abonisa ukucoceka okuphezulu.Ukuthelekisa ixabiso le-DS lesampulu yeCMC kunye nemigangatho yoshishino okanye iinkcukacha zomenzi kuvumela ukuvavanya ubunyulu bayo.
Uvavanyo lweViscosity:
Umlinganiselo weViscosity yenye indlela ebalulekileyo yokuvavanya ubunyulu beCMC.I-Viscosity inxulumene ngokusondeleyo nokuqina kunye nokuzinzisa iipropati ze-CMC.Amabanga ahlukeneyo e-CMC achaze uluhlu lwe-viscosity, kwaye ukutenxa kolu luhlu kunokubonisa ukungcola okanye ukwahluka kwinkqubo yokwenziwa.I-Viscometers okanye ii-rheometers ziqhele ukusetyenziswa ukulinganisa i-viscosity yezisombululo ze-CMC, kwaye amaxabiso afunyenweyo anokuthelekiswa noluhlu lwe-viscosity oluchaziweyo ukugweba ubunyulu be-CMC.
Uhlalutyo olusisiseko:
Uhlalutyo olusisiseko lubonelela ngolwazi oluxabisekileyo malunga nokwakheka kwe-CMC, inceda ekuchongeni ukungcola okanye ungcoliseko.Ubuchule obufana neplasma optical emission spectrometry (ICP-OES) okanye i-energy dispersive X-ray spectroscopy (EDS) inokuqeshwa ukumisela ukubunjwa okusisiseko kweesampulu zeCMC.Nakuphi na ukutenxa okubalulekileyo komlinganiselo olindelekileyo weelementi kunokubonisa ukungcola okanye izinto zangaphandle, ecebisa ukuba kunokwenzeka ukuyekelela kubunyulu.
Ukumiselwa koMxholo wokufuma:
Isiqulatho sokufuma se-CMC yiparamitha ebalulekileyo ekufuneka iqwalaselwe xa kuvavanywa ubunyulu bayo.Ukufuma okugqithisileyo kunokukhokelela kwi-clumping, ukunciphisa ukunyibilika, kunye nokusebenza esichengeni.Iindlela zobuchule ezifana ne-Karl Fischer titration okanye uhlalutyo lwe-thermogravimetric (TGA) zingasetyenziswa ukumisela isiqulatho sokufuma kwiisampulu ze-CMC.Ukuthelekisa isiqulatho sokufuma esilinganisiweyo kunye nemida echaziweyo kwenza ukuba kugwetywe ubunyulu kunye nomgangatho wemveliso yeCMC.
Uhlalutyo lokungacoceki:
Uhlalutyo lokungcola lubandakanya ukuphonononga ubukho bezinto ezingcolisayo, iikhemikhali ezishiyekileyo, okanye iimveliso ezingafunekiyo kwi-CMC.Ubuchule obufana nokusebenza okuphezulu kolwelo lwechromatography (HPLC) okanye igesi chromatography-mass spectrometry (GC-MS) zingasetyenziswa ukuchonga nokulinganisa ukungcola.Ngokuthelekisa iiprofayili zokungcola kweesampulu zeCMC ezinemida eyamkelekileyo okanye imigangatho yoshishino, ukucoceka kweCMC kunokuhlolwa.
Ukugweba ngokuchanekileyo ukucoceka kwe-sodium carboxymethyl cellulose (CMC) kubalulekile ekuqinisekiseni ukusebenza kwayo kunye nokuthembeka kwizicelo ezahlukeneyo.Iindlela zokuhlalutya ezifana neqondo lokuhlalutya endaweni, uvavanyo lwe-viscosity, uhlalutyo lwe-elemental, ukuzimisela komxholo wokufuma, kunye nohlalutyo lokungacoceki lunika ulwazi oluxabisekileyo malunga nokucoceka kwe-CMC.Abavelisi, abaphandi, kunye nabasebenzisi banokusebenzisa ezi ndlela ukwenza izigqibo ezinolwazi kwaye bakhethe iimveliso ze-CMC ezikumgangatho ophezulu ezihlangabezana neemfuno zabo ezithile.Inkqubela phambili kubuchule bohlalutyo iya kuqhubeka nokuphucula amandla ethu okuvavanya nokuqinisekisa ukucoceka kweCMC kwixa elizayo.
