Indlela yokwenza ukuqinai-hydroxyethyl cellulosekukwandisa i-viscosity ngokwenziwa kwee-hydrogen bonds eziphakathi kweemolekyuli kunye nezangaphakathi kweemolekyuli, kunye nokufuthwa kwamanzi kunye nokuxinana kwee-chain chain. Ke ngoko, indlela yokutyeba ye-hydroxyethyl cellulose inokwahlulwa ibe ziinkalo ezimbini: enye yindima yee-hydrogen bonds eziphakathi kweemolekyuli kunye nezangaphakathi kweemolekyuli. I-hydrophobic main chain inxulumana nee-molecules zamanzi ezijikelezileyo ngee-hydrogen bonds, nto leyo ephucula ukugeleza kwe-polymer ngokwayo. Umthamo wee-particles unciphisa indawo yokuhamba ngokukhululekileyo kwee-particles, ngaloo ndlela kwandisa i-viscosity yenkqubo; okwesibini, ngokuxinana kunye nokugqithana kwee-molecule chain, ii-cellulose chains zikwisakhiwo senethiwekhi esinemilinganiselo emithathu kwinkqubo yonke, ngaloo ndlela ziphucula i-viscosity.
Makhe sijonge indlela i-cellulose edlala ngayo indima ekuzinzeni kokugcinwa kwenkqubo: okokuqala, indima yeebhondi ze-hydrogen ithintela ukuhamba kwamanzi akhululekileyo, idlala indima ekugcinweni kwamanzi, kwaye inegalelo ekuthinteleni ukwahlukana kwamanzi; okwesibini, ukusebenzisana kweetyathanga ze-cellulose. I-lap entanglement yenza inethiwekhi edibeneyo okanye indawo eyahlukileyo phakathi kwee-pigments, izizalisi kunye nee-emulsion particles, ezithintela ukuhlala.
Kukudityaniswa kwezi ndlela zimbini zesenzo ezingentla okuvumelai-hydroxyethyl celluloseukuba nobuchule obuhle kakhulu bokuphucula uzinzo lokugcina. Kwimveliso yepeyinti yelatex, i-HEC eyongeziweyo ngexesha lokubetha nokusasazeka iyanda ngokwanda kwamandla angaphandle, i-gradient yesantya sokucheba iyanda, iimolekyuli zicwangciswe ngendlela ecwangcisiweyo ehambelana necala lokuhamba, kwaye inkqubo yokujika kwe-lap phakathi kwee-molecular chains iyatshatyalaliswa, okulula ukuyityibiliza kunye, i-viscosity yenkqubo iyancipha. Ekubeni inkqubo iqulethe inani elikhulu lezinye izinto (ii-pigments, ii-fillers, ii-emulsions), olu lungiselelo olucwangcisiweyo alunakubuyisela imeko edibeneyo yokudibanisa kunye nokugqubana nokuba ibekwe ixesha elide emva kokuba ipeyinti ixutywe. Kule meko, i-HEC ixhomekeke kuphela kwiibhondi ze-hydrogen. Isiphumo sokugcina amanzi kunye nokuqina kunciphisa ukusebenza kokuqina kweI-HEC, kwaye igalelo lale meko yokusasazeka kuzinzo lokugcina inkqubo nalo liyancitshiswa ngokufanelekileyo. Nangona kunjalo, i-HEC enyibilikisiweyo yasasazeka ngokulinganayo kwinkqubo ngesantya esiphantsi sokushukumisa ngexesha lokuthotywa, kwaye isakhiwo senethiwekhi esenziwe ngokudityaniswa kwee-HEC chains asonakali kangako. Ngaloo ndlela sibonisa ukusebenza okuphezulu kokutyeba kunye nozinzo lokugcina. Ngokucacileyo, isenzo ngaxeshanye seendlela ezimbini zokutyeba sisisiseko sokutyeba ngokufanelekileyo kwe-cellulose kunye nokuqinisekisa uzinzo lokugcina. Ngamanye amazwi, imeko yokutyeba nokusasazeka kwe-cellulose emanzini iya kuyichaphazela kakhulu impembelelo yayo yokutyeba kunye negalelo layo kuzinzo lokugcina.
Ixesha leposi: Epreli-25-2024