Izinto ezichaphazela ukuziphatha kweCarboxymethyl Cellulose (CMC) Izisombululo

ICarboxymethyl cellulose (CMC) yipolymer enyibilikayo emanzini ephuma kwiselulosi enoluhlu olubanzi lwezicelo kumashishini ahlukeneyo, kubandakanya ukutya, amayeza, izinto zokuthambisa, kunye nephepha. Ukuziphatha kwezisombululo ze-CMC kunokuphenjelelwa zizinto ezininzi, kubandakanya ukugxininiswa, ubunzima bemolekyuli, inqanaba lokuthatha indawo, i-pH, ubushushu, kunye neemeko zokuxuba. Ukuqonda le miba kubalulekile ekwandiseni ukusebenza kwe-CMC kwizicelo ezahlukeneyo. Kweli nqaku, siza kuxoxa ngezinto eziphambili eziphembelela ukuziphatha kwezisombululo zeCMC.

Ukugxininisa

Ukugxininiswa kwe-CMC kwisisombululo kunokuchaphazela kakhulu ukuziphatha kwayo. Njengoko i-concentration ye-CMC isanda, i-viscosity yesisombululo nayo iyanda, iyenza ibe yi-viscous kwaye ihambe kancinci. Le propati yenza izisombululo eziphezulu ze-CMC ezilungele izicelo ezifuna i-thickening okanye i-gelling effect, njengokutya kunye nezithambiso.

Ubunzima beMolekyuli

Ubunzima bemolekyuli yeCMC yenye into ebalulekileyo enokuchaphazela ukuziphatha kwayo. Ubunzima bemolekyuli ephezulu ye-CMC ithande ukuba neepropati ezingcono zokwenza ifilimu kwaye isebenze ngakumbi ekuphuculeni iimpawu ze-rheological zesisombululo. Ikwabonelela ngomthamo ongcono wokugcinwa kwamanzi kunye nokwandisa iimpawu zokubopha isisombululo. Nangona kunjalo, ubunzima bemolekyuli ephezulu ye-CMC inokuba nzima ukuyinyibilikisa, iyenza ingafaneleki kwizicelo ezithile.

Isidanga soTshintsho

Iqondo lokuthatha indawo (DS) ye-CMC ibhekisa kwiqondo le-carboxymethylation yomqolo we-cellulose. Inokuchaphazela kakhulu indlela yokuziphatha yezisombululo zeCMC. I-DS ephezulu ibangela ukunyibilika okuphezulu kunye nomthamo ongcono wokugcinwa kwamanzi kwisisombululo, okwenza kube lula ngakumbi kwizicelo ezifuna umthamo ophezulu wokubamba amanzi, njengokutya kunye namayeza. Nangona kunjalo, i-DS CMC ephezulu inokubangela ukwanda kwe-viscosity, enokunciphisa ukusetyenziswa kwayo kwiinkqubo ezithile.

pH

I-pH yesisombululo se-CMC inokuchaphazela nokuziphatha kwayo. I-CMC ngokuqhelekileyo izinzile kwindawo engathathi hlangothi kwi-alkaline pH, kwaye i-viscosity yesisombululo iphezulu kwi-pH ye-7-10. Kwi-pH ephantsi, ukunyibilika kwe-CMC kuncipha, kwaye i-viscosity yesisombululo iyancipha ngokunjalo. Ukuziphatha kwezisombululo ze-CMC kukwanovakalelo kutshintsho lwe-pH, olunokuchaphazela ukunyibilika, i-viscosity, kunye neempawu ze-gelation zesisombululo.

Ubushushu

Ubushushu besisombululo se-CMC bunokuchaphazela ukuziphatha kwayo. I-solubility ye-CMC iyanda kunye nobushushu, kwaye amaqondo aphezulu aphezulu angabangela i-viscosity ephezulu kunye nomthamo ongcono wokugcinwa kwamanzi. Nangona kunjalo, ukushisa okuphezulu kunokubangela isisombululo kwi-gel, okwenza kube nzima ukusebenza kunye. Ubushushu be-gelation ye-CMC buxhomekeke kwizinto ezininzi, kubandakanywa noxinaniso, ubunzima bemolekyuli, kunye neqondo lokuthatha indawo.

Iimeko zokuxuba

Iimeko ezixutywayo zesisombululo seCMC zinokuchaphazela nokuziphatha kwayo. Isantya, ubude, kunye nobushushu bokuxuba konke kunokuchaphazela ukunyibilika, i-viscosity, kunye neempawu ze-gelation zesisombululo. Izantya zokuxuba eziphezulu kunye namaqondo okushisa angabangela i-viscosity ephezulu kunye nokugcinwa kwamanzi angcono, ngelixa ixesha elide lokuxuba lingabangela ukusabalalisa okungcono kunye nokufana kwesisombululo. Nangona kunjalo, ukuxuba ngokugqithiseleyo kunokubangela isisombululo kwi-gel, okwenza kube nzima ukusebenza.

Ukuqukumbela

Ukuziphatha kwezisombululo zeCMC kuphenjelelwa zizinto ezininzi, kubandakanya ukugxininiswa, ubunzima bemolekyuli, inqanaba lokutshintsha, i-pH, ubushushu, kunye neemeko zokuxuba. Ukuqonda le miba kubalulekile ekwandiseni ukusebenza kwe-CMC kwizicelo ezahlukeneyo. Ngokulawula le miba, kunokwenzeka ukulungelelanisa ukuziphatha kwezisombululo ze-CMC ukuhlangabezana neemfuno ezithile zezicelo ezahlukeneyo, ezifana nokuqina, i-gelling, ukubopha, okanye ukugcinwa kwamanzi.