Ama-cellulose ether ama-polymer okwenziwa enziwe nge-cellulose yemvelo futhi ashintshwe amakhemikhali.I-Cellulose ether iphuma ku-cellulose yemvelo.Ngokungafani nama-polymers okwenziwa, ukukhiqizwa kwe-cellulose ether kusekelwe ku-cellulose, into eyisisekelo kakhulu, inhlanganisela ye-polymer yemvelo.Ngenxa yokucaciswa kwesakhiwo se-cellulose yemvelo, i-cellulose ngokwayo ayinalo ikhono lokusabela nge-etherizing agents.Kodwa-ke, ngemva kokwelashwa kwe-solubilizers, izibopho ze-hydrogen eziqinile phakathi nangaphakathi kwamaketanga e-molecular ziyabhujiswa, futhi umsebenzi weqembu le-hydroxyl ukhishwa ku-alkali cellulose enekhono lokusabela, futhi ngemva kokusabela kwe-etherizing agent iqembu le-OH liyaguqulwa. eqenjini NOMA ukuze uthole i-cellulose ether.
Ama-cellulose ether anomphumela osobala wokufaka umoya ezintweni zikasimende ezisanda kuxutshwa.Ama-cellulose ether anakho kokubili amaqembu e-hydrophilic (i-hydroxyl, i-ether) ne-hydrophobic (i-methyl, i-glucose ring) futhi angama-surfactants anomsebenzi ongaphezulu futhi ngaleyo ndlela abe nomthelela wokungenisa umoya.Umphumela wokungena emoyeni we-cellulose ether uzokhiqiza umphumela "webhola", ongathuthukisa ukusebenza kokusebenza kwezinto ezintsha, njengokwandisa ipulasitiki kanye nokushelela kodaka ngesikhathi sokusebenza, okuzuzisa ukusabalalisa udaka;izophinde ithuthukise isivuno sodaka futhi inciphise izindleko zokukhiqiza udaka;kodwa-ke, izokwandisa i-porosity yezinto eziqinile futhi inciphise amandla ayo kanye ne-elastic modulus, njll.
Njenge-surfactant, i-cellulose ether nayo inomphumela wokumanzisa noma wokugcoba ezinhlayiyeni zikasimende, okuthi kanye nomphumela wawo wokungenisa umoya okhuphule ubumanzi bezinto zikasimende, kodwa umphumela wawo wokujiya unciphisa uketshezi, kanye nomphumela we-cellulose ether ku-fluidity ye izinto zikasimende ziyinhlanganisela ye-plasticizing kanye nemiphumela yokuqina.Ngokuvamile, lapho inani le-cellulose ether liphansi kakhulu, libonisa ngokuyinhloko umphumela we-plasticization noma ukunciphisa amanzi;uma inani liphezulu, umphumela wokujiya we-cellulose ether ukhula ngokushesha, futhi umphumela wawo wokungenisa umoya uvame ukugcwala, ngakho ubonisa umphumela wokuqina noma ukwandisa imfuneko yamanzi.
Isikhathi sokuthumela: Apr-24-2022