I-SelerUlose Ether yi-polymer ye-Syntmer eyenziwe kwi-selupese yendalo ngokuguqula iikhemikhali. I-SelerUlose Ether yindawo yokukhutshwa kwendalo. Ukuveliswa kwe-ether yeselselose yahlukile kwi-polymers yokwenziwa. Eyona nto iphambili kuyo esisiseko yi-sellulose, i-polymer yendalo. Ngenxa yobunye besakhiwo sendalo seselfowuni, i-selsulose ngokwayo ayinakwazi ukusabela ngeearhente zokhenketho. Nangona kunjalo, emva konyango iarhente yokudumba, iimbophelelo ze-hydrogen eqinileyo phakathi kweemolekyuli kunye namakhonkco atshatyalaliswayo, kwaye ukukhutshwa kweqela le-hydroxyl iba yi-alkali. Fumana i-sell sether.
Ekulandeleni udaka, isixa esongeneyo se-ether yeselselose siphantsi kakhulu, kodwa inokuyiphucula kakhulu intsebenzo yodaka olumanzi, kwaye yeyona nto iphambili echaphazela ukusebenza kodaka. Ukhetho olusebenzayo lweSeluplose kuthweba iintlobo ezahlukeneyo, ii-viscofis ezahlukeneyo, ubungakanani be-visaricle ye-viscofity kunye nezixa ezongeziweyo ziya kuba nefuthe elihle kuphuculo lomgubo owomileyo. Okwangoku, uninzi lwamanzi kunye nokufakelwa kwezinto ezingekhoyo kunendlela yokugcina amanzi, kwaye amanzi olwelo ayahlukanisa emva kwemizuzu embalwa yokuma.
Ukugcinwa kwamanzi yintsebenzo ebalulekileyo ye-methyl seler ither, kwaye kukwayindlela yokusebenza kwabantu abanodaka basekhaya, ngakumbi abo bakwimimandla esemazantsi ngamaqondo obushushu aphezulu, anikele ingqalelo. Izinto ezichaphazela ukusebenza kwamanzi ofa lodaka lomdibaniso otyunjiweyo, i-MC, i-viscosity ye-MC, ukulunga kwamasuntswana kunye nobushushu bendawo yokusetyenziswa.
Iipropathi ze-Selesese Hailes zixhomekeke kuhlobo, inani kunye nokusasazwa kwezinto ezizimeleyo. Ukwahlula-hlula kwe-Selese eSelesese eTonis kukwasekelwa kuhlobo lokuthathela ingqalelo izinto, isidanga sokuthengiswa, ukonakala kunye neepropathi ezinxulumene noko. Ngokutsho kohlobo lokuthathela izinto kwi-molecular thein, inokwahlulwa ibe yi-monotere kunye ne-ether exubeneyo. I-MC ihlala isebenzisa i-monoether, kwaye i-HPMC ixutywe nether. I-methyl seluplose ether MC yimveliso emva kweQela le-hydroxyl kwicandelo le-Glucose ye-Gluolose ye-Floulose ifakwe ngendlela eyiyo. Ifomula yesakhiwo i [coh7o2 (oh) 3-h (och3) x] x. Inxalenye yeqela le-hydroxyl kwiCandelo lithathelwe indawo yeqela le-Macwitxy, kwaye elinye icandelo litshintshwe yiQela le-Hydroxypropy, ifomula yesakhiwo i-oct2 (oCH2CH2) x Ithyl Meyl Methyl Selelose Ether Hemc, ezi ziintlobo eziphambili zanda kwaye zithengiswa emarikeni.
Ngokuphathelelene nokuluka, kunokwahlulwa kwi-Ionic kwaye ingenzi-i-ionic. I-ionic forwecle inyibiliki ye-ionic selsulose edityaniswe ikakhulu yochungechunge amabini eAlkyl I-Ionic CMC isetyenziswa ikakhulu kwizinto zokucoca ngokukuko, ukuprinta okubhaliweyo kunye nokudaya, ukutya kunye nokuhlolwa kweoyile. I-Ionic MC, i-HPMC, iHMC, njl njl. Zisetyenziswa ikakhulu kwizinto zokwakha, i-Latex Coatings, iarhente yokugcina amanzi, i-stailing, iarhente yefilimu yefilimu.
Ukugcinwa kwamanzi kwe-Setelulose Ether: Kwimveliso yezinto zokwakha, ngakumbi i-powder yodaka, i-Sether Ether idlala indima yodaka (uHlobo oluhleweyo), lubaluleke kakhulu kwaye lubalulekile. Indima ebalulekileyo ye-Sell-foey ye-ether eselula elukhupheni ikakhulu ineempawu ezintathu:
I-1. Umthamo ofanelekileyo wokugcina amanzi
I-2. Impembelelo kuThengiso lokuThengiswa kunye neThixotdOpy
3. Ukunxibelelana nesamente.
Inkqubo yokugcina amanzi ye-selsulose ether ixhomekeke ekufungeni lwamanzi kuludaka, ukwakhiwa kodaka, ubungqingqwa bodaka, kunye nexesha lokumiswa kwemibandela. Ukugcinwa kwamanzi kwe-seluplose i-ether ngokwayo kuza ukusuka kwi-solidality kunye nokupheliswa kwenkunkuma kweselfowuni uqobo. Njengoko sonke sazi, nangona i-selsulose chain iqulathe inani elikhulu lamaqela amakhulu e-hydratty, ayinyibili emanzini, kuba isakhiwo seselselose sinesidanga esiphezulu. Ubuchule bokuhluthwa kwamaqela e-hydroxyl bodwa akwanelanga ukugubungela iibhondi ezinamandla ze-hydrogen kunye ne-van der imbonakalo phakathi kweemolekyuli. Ke ngoko, ifudula kodwa ayinyibiliki emanzini. Xa umntu obambelelayo waziswa kwi-molecular thein, ayisiyiyo kuphela into ephambili intshabalalo i-hydrogen shain, kodwa kunye ne-hydrogen ye-hydrogen ye-hydrogen itshatyalalisiwe ngenxa yomntwa ophantsi. Ukukhululeka, kokukhona mkhulu phakathi kweemolekyuli. Kokukhona mkhulu umgama. Impembelelo enkulu yokutshabalalisa i-Hydrogen Bonds, i-Ete yaseLtulose iba ngathi inyibilikisi emva kokuba i-latkulose lattle yandisiwe kwaye isisombululo singenasisombululo esiphezulu. Xa iqondo lobushushu liyaphuma, i-hydration ye-polymer yamanzi, kwaye amanzi aphakathi kwamakhonkco aqhutywa. Xa iziphumo zokupheka zanele, iimolekyuli ziqala ukudibanisa, zenza i-geriment yenethiwekhi yenethiwekhi ye-gene.
IXESHA LOKUQALA: I-DEC-06-2022