Impembelelo yokungenisa umoya ye-cellulose ether

I-cellulose ethers zi-polymers zokwenziwa ezenziwe kwi-cellulose yendalo kunye nokuguqulwa kweekhemikhali. I-ether ye-cellulose iphuma kwi-cellulose yendalo. Ngokungafaniyo neepolymers zokwenziwa, ukuveliswa kwe-cellulose ether kusekelwe kwi-cellulose, eyona nto isisiseko, i-polymer compound yendalo. Ngenxa yendlela ekhethekileyo yesakhiwo se-cellulose yendalo, i-cellulose ngokwayo ayinakho ukusabela nge-etherizing agents. Nangona kunjalo, emva kokunyangwa kwe-solubilizers, iibhondi ze-hydrogen ezomeleleyo phakathi nangaphakathi kwamatyathanga emolekyuli ziyatshatyalaliswa, kwaye umsebenzi weqela le-hydroxyl ukhutshwa kwi-alkali cellulose ekwaziyo ukusabela, kwaye emva kokusabela kwe-etherizing agent iqela le-OH liyaguqulwa. kwiqela OKANYE ukufumana i-ether cellulose.

I-cellulose ethers inefuthe elicacileyo lokungenisa umoya kwizinto ezisanda kuxutywa zesamente. I-cellulose ethers ine-hydrophilic (i-hydroxyl, i-ether) kunye ne-hydrophobic (i-methyl, i-glucose ring) amaqela kwaye zi-surfactants ezinomsebenzi ongaphezulu kwaye ngoko zinempembelelo yokungenisa umoya. Umphumo wokungenisa umoya we-cellulose ether uya kuvelisa umphumo "webhola", onokuphucula ukusebenza kwezinto ezintsha, njengokwandisa iplastiki kunye nokuguquguquka komdaka ngexesha lokusebenza, okunenzuzo ekusasazeni umdaka; iyakuphucula kwakhona isivuno sodaka kwaye inciphise iindleko zokwenziwa kodaka; nangona kunjalo, iya kwandisa i-porosity yezinto ezilukhuni kwaye inciphise amandla ayo kunye ne-elastic modulus, njl.

Njenge-surfactant, i-cellulose ether nayo inefuthe lokumanzisa okanye lokuthambisa kumasuntswana esamente, ethi idibene nefuthe layo lokungenisa umoya inyuse ulwelo lwezixhobo zesamente, kodwa isiphumo sayo esityebileyo sinciphisa ukuguquguquka, kunye nesiphumo se-cellulose ether kwi-fluidity ye-ether. izinto zesamente yindibaniselwano yeplastiki kunye neziphumo ezityebileyo. Ngokuqhelekileyo, xa inani le-cellulose ether liphantsi kakhulu, libonisa ngokukodwa umphumo weplastiki okanye ukunciphisa amanzi; xa isixa siphezulu, isiphumo sokuqina kwe-ether ye-cellulose yanda ngokukhawuleza, kwaye umphumo wayo wokungenisa umoya uvame ukuhlutha, ngoko ubonisa umphumo wokuqina okanye ukwandisa imfuno yamanzi.