Ngobuqhetseba obuhambelanaweyo, isixa esongeneyo se-ether selsulose iphantsi 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-methylI-Selersese Ether, 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.
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.
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. Inxalenye yeqela le-hydroxyl kwiCandelo lithathelwe indawo yeqela le-Macwitchy, kwaye enye icandelo litshintshwa yiQela le-hydroxlypropy. I-Ethyl Methyl Selelise I-Ether Hemc, ezi ziintlobo eziphambili zanda zasetyenziswa ngokubanzi 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, i-HMC, njl njl. Zisetyenziswa ikakhulu kwizixhobo zokwakha, i-Latex Coatings, iarhente yemihla ngemihla, i-stailing, i-stivering kunye nearhente 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 yokunyibilika kwamanzi e-tellase kwi-diser ebukhali ineempawu ezintathu, enye inesikhundla esihle sokugcina amanzi, enye yimpembelelo ekungqineni nasekuthiningqelo lodaka, kwaye owesithathu kukunxibelelana 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.
Izinto ezichaphazela ukugcinwa kwamanzi kubandakanya i-viscosity ye-seluplose ether, isixa esongeziweyo, ukulunga kwamasuntswana kunye neqondo lokushisa.
Owona mkhulu we-viscosity ye-seluplose ether, engcono ukusebenza kwendlela yokugcina amanzi. I-Viscosity yipharamitha ebalulekileyo ye-MC yokusebenza. Okwangoku, abavelisi be-MC basebenzisa iindlela ezahlukeneyo kunye nezixhobo zokulinganisa i-MC. Iindlela eziphambili ze-rotovisko, i-hoppler, ibbelohde kunye ne-brookfield. Kwimveliso efanayo, iziphumo ze-viscofity zilinganiswe ngeendlela ezahlukeneyo zahluke kakhulu, kwaye ezinye zinokuphinda-phinda umohluko. Ke ngoko, xa kuthelekiswa nokundwendwela, kufuneka kwenziwe phakathi kweendlela zovavanyo ezifanayo, kubandakanya neqondo lokushisa, i-rotor, njl.
Ngokubanzi, ukuphakama kwe-viscosity, eyona nto ilunge ngakumbi. Nangona kunjalo, ukuphakama kwe-viscofity kunye nokuphakathi kobunzima be-MC, ukwehla okufanayo ekuzenisweni kwalo kuya kuba nefuthe elibi kumandla kunye nokusebenza komsebenzi wokwakha. Ukuphakama kwe-viscofity, eyona nto icacileyo yokuthambisa kodaka, kodwa ayifani ngokuthe ngqo. Ukuphakama okuphezulu, kokukhona udaka olunamanzi luya kuba, oko kukuthi, ngexesha lolwakhiwo, lubonakaliswa njengokunamathela kwi-scraper kunye nokunamathela okuphezulu. Kodwa akuncedi ukonyusa amandla olwakhiwo lofudu lwamanzi. Ngexesha lokwakha, umsebenzi we-Anti-SAG akacacanga. Ngokuchasene noko, i-vissium ephakathi nephantsi kodwa iguqulwe i-methyl ye-melsulose entsebenzo ebalaseleyo ekuphuculeni amandla olwakhiwo lodaka lwamanzi.
Ngaphezulu inani le-itelulose i-ether yongezwa kodaka, ngakumbi ukusebenza kokugcina amanzi, kunye nokuphezulu komsebenzi wokugcina amanzi.
Ubungakanani bentsumpa, imbumbulula isuntswana, kungcono ukugcinwa kwamanzi. Emva kwamasuntswana amakhulu e-Selersese Ether ingena ekuhlanganeni namanzi, umphezulu uyayinyibilika ngokukhawuleza kwaye uyisonge ijeli ukuba isonge imibandela yokuthintela iimolekyuli zamanzi eziqhubeka noko. Ngamanye amaxesha ayinakusasazeka ngendlela efanayo kwaye inyibilikisiwe nasemva kwexesha elide, ukwenza isisombululo se-scan esinamafu okanye i-agemmeration. Ichaphazela kakhulu ukugcinwa kwamanzi kwe-seluplose i-ether, kwaye ukuluka kwenye yezinto zokukhetha i-gather ekrway. Ubuhle buyinto ebalulekileyo yentsebenzo ye-methyl selete. I-MC isetyenziselwa umgubo womgubo owomileyo kufuneka ube ngumgubo, ngomxholo wamanzi ophantsi, kwaye ukulunga kwanama-60% ~ ~ 60% ye-paricle ukuba ungaphantsi kwe-63um. Ukuhlekisa kuchaphazela ukunyibilisela i-methyl seler. I-MCE MC idla ngokuba ngumphathi, kwaye kulula ukunyibilika emanzini ngaphandle kokuncitshiswa, kodwa ireyithisi yokuchitheka icotha kakhulu, ngoko ayifanelekanga ukuba isetyenziswe ngodaka olwahlukileyo. Ngomgubo owomileyo, i-MC ichithwayo kwizinto ezifana nesamente ezinje nge-agggate, i-fililler kunye nesamente, kunye nomgubo owoneleyo onokuphepha i-methyl ye-methyl ye-iteglose xa udibanisa namanzi. Xa i-MC yongezwa ngamanzi ukunyibilikisa i-agegomerates, kunzima kakhulu ukusasaza kunye nokunyibilikisa. I-Coardeney ye-MC ayiphelelanga, kodwa ikwanciphisa amandla endawo yodaka. Xa udaka lomgubo owomileyo lusetyenziswa kwindawo enkulu, isantya sokunyangwa komgubo owomileyo womanzi uya kuncitshiswa kakhulu, kwaye imingxunya iya kuvela ngenxa yamaxesha osahlukileyo. Ngodaka olutshintshiweyo ngolwakhiwo lwamatshini, imfuneko yokulunga iphezulu ngenxa yexesha elifutshane lokuxuba.
Ukulunga kwe-MC ikwanempembelelo ethile ekuphepheni kwamanzi. Ngokubanzi, kwi-methyl selese tanges ngokubonisa ukufana okufanayo kodwa phantsi kwesixa esifanayo sokudibanisa, umpheliso wongeza ukuba ulunge ngakumbi.
Ukugcinwa kwamanzi i-MC ikwanxulumene neqondo lokushisa elisetyenzisiweyo, kunye nokugcinwa kwamanzi kwe-methyl selethe i-ether ihla ngokunyuka kweqondo lobushushu. Nangona kunjalo, kwizicelo zezinto ezibonakalayo, udaka lomgubo luhlala lusetyenziswa kumaxabiso ashushu kwiqondo lobushushu (elingaphezulu kwe-40 degrees) kwiindawo ezininzi ehlotyeni kwaye luhlala luza kukhanyisela isamente kunye nokukhuseleka kwe Umgubo owomileyo wodaka. Ukwehla kwenqanaba lokugcina amanzi kukhokelela kwimvakalelo ecacileyo yokuba zombini iindlela zokusebenza kunye nokuchasana kuyachaphazeleka, kwaye kubaluleke kakhulu ukunciphisa ifuthe lezinto zobushushu phantsi kwale meko. Nangona i-methyl hydroxythl sethel ithewose orsetives ngoku ithathelwa ingqalelo ukuba iphambili kuphuhliso lwetekhnoloji, ukuxhomekeka kwabo kubushushu kuya kukhokelela ekusebenzeni komgubo owomileyo. Nangona inani le-methyl hydroxythyl seluplose inyuswe (ifomula yehlobo), ukusebenza kunye nokunganyangeki kwe-rack akunakufikeleleka kwiimfuno zokusetyenziswa. Ngolunye unyango olukhethekileyo kwi-MC, njengokukhulisa inqanaba lokuthengisa, njl njl.
Ukongeza, i-thiixreation kunye ne-Thutotropy ye-Selese-I-Ether ItelUlose Ether-I-Slickeng ixhomekeke: Inqanaba le-polymering esupelose ether, i-Sombulelo, iqondo lokugcina, ubushushu kunye nezinye iimeko. Ipropathi yegengi yesisombululo yahlukile kwi-alkyl sellulose kunye nokuguqulwa kwayo. Ipropathi yokurhafiswa ihambelana nenqanaba lokufaka endaweni, isisombululo kunye nokongezwa. I-HydroXlekyl Derivatives, iipropathi zejeli zikwahambelana nenqanaba lokuguqula kwe-hydroxayl. I-viscofity ephantsi ye-MC kunye ne-HPMC, i-HPMC, i-10% -15% inokulungiswa, i-vikosity ye-MC kunye ne-HPMC inokulungiswa nge-5% -10% ye-vissosity mc kunyeI-HPMCUnokulungiselela kuphela isisombululo esi-2% se-3%, kwaye idla ngokuhlelwa kwe-viscosity ye-etelulose i-ether nayo inomgangatho we-1% -2% yesisombululo. Ubunzima obuphezulu be-follelose i-ether inomgangatho ophezulu kakhulu. Kwisisombululo esifanayo sokuxinana, ii-polymers ezinamatye ahlukeneyo eemolekyuli zineendawo zokundwendwela ezahlukeneyo. Inqanaba eliphezulu. UVenkile ekujoliswe kuyo unokufezekiswa kuphela ngokongeza isixa esikhulu se-moleculase esineselula. I-viscosity yayo ayinamsebenzi mncinci kumgangatho we-Shear, kwaye i-viscofity ephezulu ifikelela kwithagethi yethagethi, kwaye isixa esongeneyo esifunekayo sincinci, kwaye i-vickosity ixhomekeke ekusebenzeni ngokuqinileyo. Ke ngoko, ukufezekisa ukungqinelana okuthile, isixa esithile se-ether sether (uxinzelelo lwesisombululo) kunye ne-vissosity yesisombululo kufuneka iqinisekiswe. Iqondo lobushushu le-gene lesisombululo likwancipha ngocoselelo ngokunyuka kwengxaki yesisombululo, kunye ne-gels kubushushu begumbi emva kokufikelela uxinzelelo oluthile. Ukugxininiswa kwe-HPMC iphakame kakhulu kubushushu begumbi.
Ukungaguquguquka kungalungiswa ngokukhetha ubungakanani be-paricle kwaye ukhetha iiselsese Ukulungiswa okubizwa ngokuba kukwazisa inqanaba elithile lokufakwa endaweni yamaqela e-hydroxaskyl kwisakhiwo seSkeleton ye-MC. Ngokutshintsha amaxabiso okufana nabantu ababini, oko kukuthi, i-DS kunye ne-DS kunye neMimandla yeMigangatho ye-Manages Iimfuneko ezahlukeneyo zomsebenzi we-Teluplose Ethely inokufunyanwa ngokutshintsha amaxabiso okuqala atshintshiwe kwezinto ezimbini.
Ulwalamano phakathi kokuguquguquka kunye nokuguqulwa: ukongezwa kwe-ete yeselselose kuchaphazela ukusetyenziswa kwamanzi, ukutshintsha umlinganiselo wamanzi we-Binder, i-dosage i-Dosage, kokukhona umthamo omkhulu wokusetyenziswa kwamanzi.
I-Seleculose ebhashe esetyenziswayo kwizinto zokwakha ezakhiweyo kufuneka inyibilikise ngokukhawuleza emanzini abandayo kwaye ibonelele ngokungqinelana kwenkqubo. Ukuba unikwe inqanaba elithile le-Shear, luba luba yi-putcupler kunye nebhloko ye-colloidal, eyimveliso ephantsi okanye imveliso esemgangathweni.
Kukho ubudlelwane obulungileyo obulungileyo phakathi kokungqinelana kwesamente i-starchi kunye nethamo ye-seluplose ether. I-Telulose Ether inokunyusa kakhulu i-viscosity yodaka. Idosi enkulu, eyona nto icacileyo. Isisombululo se-vissosity se-ethe molous ye-etheeus atheeus i-ThixitRopy ephezulu, ekwangumlinganiswa omkhulu we-ether yeseluplose. Izisombululo ze-ACTEACE ze-MC Polymers zihlala zine-pseudoplastic kunye ne-non-th-th-th-th-thyropic fluity ngaphantsi kweqondo lokushisa layo, kodwa iNewtonian Sperties ngamaxabiso asezantsi asezantsi. I-pseudoplasticimostity inyuka ngobunzima bemolekyuli okanye uxinzelelo lwe-ether sether, ngaphandle kohlobo lokuthatha indawo kunye nenqanaba lokufaka endaweni. Ke ngoko, i-selupelose esuka kwiBanga le-viscosity efanayo, i-MC, i-HPMC, i-HMC, iya kuhlala ibonisa iipropathi ezifanayo ze-rheocical logama nje ukuba uxinzelelo kunye nobushushu zigcinwe rhoqo. I-Gels zesakhiwo isenziwa xa iqondo liphakanyisiwe, kwaye ihamba kakhulu i-Thixitropic. Uxinzelelo oluphezulu kunye ne-viscofity ephantsi yeselula i-Show Thrixotdropy naphantsi kweqondo lobushushu. Le ndawo yepropathi ixhamla kuhlengahlengiso lwenqanaba kunye nokungena ekwakhiweni kokwakha umdaka. Kufuneka ichongwe apha ukuba i-viscosity yeseluplose i-ether, ilunge ngakumbi ukugcinwa kwamanzi, kodwa iphakame i-viscofity, i-vissing moley ye-ether, kunye nefuthe elibi Kwintsebenzo yochukumiso kunye nokusebenza ngokwakhiwa. Ukuphakama kwe-viscofity, eyona nto icacileyo yokutyibilika kodaka, kodwa ayingqinelani ngokupheleleyo. Uhlobo oluthile oluPhakathi, oluPhakathi oluPhakamileyo, kodwa i-imeyile eguqulweyo i-Ether isebenza kakuhle ekuphuculeni amandla olwakhiwo lodaka lwamanzi. Ngokunyuka kwe-viscofity, ukugcinwa kwamanzi kwi-ether
Ukubuyiselwa kwe-seluplose Ether: Umsebenzi wesithathu we-Teluplose Ether kukulibazisa inkqubo ye-qumed. I-Seley Sether Ether Ukhenketho ngodaka lwepropathi eyahlukeneyo, kwaye unciphisa ubushushu bokuqala ubushushu besamente kwaye ulibazise inkqubo yokusebenza ye-hydration. Oku akulunganga ekusebenziseni udaka kwimimandla ebandayo. Esi siphumo sokubuyisa ibangelwa yi-adsorvose yemolekyuli ye-etelulose e-Iser kwiimveliso ze-hydication ezifana ne-csh kunye ne-CA (oh) 2. Ngenxa yokwanda kohlobo lwesisombululo se-Pore, i-Ether i-Itesulose inciphisa ukushukuma kwe-ion kwisisombululo, ngaloo ndlela kulibazisa inkqubo ye-hydration. Ukugxininiswa okuphezulu kwe-cleculose i-ether kwizimbiwa ze-mineral, kokukhona kwangenisa ifuthe lokulibaziseka kwengubo. I-Selsulose Ether ayizizisiseko zokuseta kuphela, kodwa iphinde ilibazise inkqubo yokuqina kwenkqubo yokhula. Isiphumo sokubuyisa i-selsulose ether ixhomekeke kuphela kwingxaki yayo kwi-gelic gel, kodwa nakwimo yemichiza. Inqanaba eliphezulu lobume be-HMYIRT, engcono isiphumo sokubuyisa kwe-tartulose ether. Umyinge wokufakwa endaweni ye-hydrophilic yokufaka endaweni yokufaka amanzi esiphumo somelele. Nangona kunjalo, i-viscosity ye-Selese i-ether ineempembelelo ezincinci kwi-cembary kinetics kinetics kinetics kinetics.
Ngokwanda kwe-selsulose ekuteleni, ukumiswa kwexesha lodaka kunyuka kakhulu. Kukho ukunxibelelana okuhle kwe-noliar phakathi kokuseta okokuqala kodaka kunye nomxholo we-seluplose ether, kunye nokulungelelaniswa komgca olungileyo phakathi kwexesha lokugqibela kunye nomxholo we-seluplose. Singalikwazi ukulawula ixesha lokusebenza kodaka ngokutshintsha inani le-itelulose ether.
Ukukhulula, ngodaka oluxubeneyo,I-Selersese EtherIdlala indima ekugcinweni kwamanzi, ukuqina, ukulibazisa amandla omzimba, kunye nokuphucula ukusebenza kokwakha. Umthamo wokugcina amanzi kakuhle wenza ukuba i-qumed hydration igqitywe ngakumbi, inokuphucula uVeksi omanzi wodaka lwamanzi, yandisa amandla okuzala, kwaye uhlengahlengise ixesha. Ukongeza i-selupelose ether kwi-spraise yomatshini kunokuphucula ukutshiza okanye ukupeyinta impompo kunye namandla obalo. Ke ngoko, i-Ethersese Ether isetyenziswa ngokubanzi njengesongezo elibalulekileyo kubukhoboka obuxubeneyo.
IXESHA LOKUQALA: APR-28-2024