Yeyiphi indima i-Ether I-EREUT idlala ngodaka oluqhelekileyo?

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 ye-mono tether kwaye ixutywe ne-ether. Ngokwesiqhelo sisebenzisa i-MC njengoko uMono Ether, kunye ne-HPMC njenge-ether exubeneyo. I-methyl seluplose ether MC yimveliso emva kweqela le-hydroxyl kwicandelo le-Glucose ye-Gluolose ye-Floulose ifakwe iqela. Ifomula yesakhiwo yi [CO H7O2 (O) 3-H) 3-H) I-3-H I-OCH3 The structural formula is [C6H7O2(OH)3-mn(OCH3)-m[OCH2CH(OH)CH3]n]x There is hydroxyethyl methylcellulose ether HEMC, which are the main varieties widely used and sold in the market.

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 kwizinto zokwakha, ipeyinti ye-FEEX, amayeza, iikhemikhali zemihla ngemihla njalo njalo. Isetyenziswe njenge-tickener, iarhente yokugcina amanzi, i-stabilizer, isisasazi kunye nearhente yefilimu.

Ukugcinwa kwamanzi kwe-seluplose ether

Kwimveliso yezinto zokwakha, ngakumbi udaka oluxubeneyo oluxubeneyo, i-Ether Ether idlala indima engenakufikelelwa, ngakumbi kwimveliso yodaka olukhethekileyo (udaka oluhleweyo), yinto ebalulekileyo nebaluleke kakhulu.

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. Kuyaziwa ukuba 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.

Ukuphelisa i-viscosity ye-vissese i-ether, ilunge ngakumbi intsebenzo yokugcina amanzi, kunye nokupheliswa kwesisombululo sePolymer. Kuxhomekeka kubunzima bemolekyuli (isidanga sokugcwalisa i-polymerization) ye-polymer, ikwagqitywa kubunzima bemozulu yemolekyuli kunye nobume bekhonkco, kunye nokuhanjiswa kweentlobo kunye nenani leentlobo ezichaphazela ngqo uluhlu lwayo lokundwendwela.

[η] = km α

[η] Uhlobo lwe-varinsic yesisombululo sePolymer

m ubunzima be-polymer moley

I-polymer ye-Polymer ihlala ihleli

I-Kycosity isisombululo sokusebenza

I-viscosity yesisombululo sePolymer ixhomekeke kubunzima bemolekyuli yePolymer. I-viscosity kunye nokugxininiswa kwesisombululo se-Selese i-selsulose sihambelana nesicelo kwimimandla eyahlukeneyo. Ke ngoko, i-Selese nganye iseti ineenkcazo ezininzi ezahlukeneyo zokufakelwa, kwaye uhlengahlengiso lwe-viscofity luye lwaqaliswa ikakhulu kukonakaliswa kweAlkali Selelise, oko kukuthi, ukwaphula imixokelelwane ye-folecial molecrins.

Ingabonwa kumzobo 1.2 ukuba ngaphezulu kwesixa esikhulu se-taryuese Ether yongezwa kodaka, ngcono ukusebenza kokugcina amanzi, kunye nokuphezulu komsebenzi wokugcina amanzi.

Ngobukhulu bentsalela, i-paricle isuntswana, engcono ukugcinwa kwamanzi. Ngamanye amaxesha ayinakusasazeka ngendlela efanayo kwaye inyibilikisiwe nasemva kwexesha elide, ukwenza isisombululo se-scan esinamafu okanye i-agemmeration. Ichaphazela kakhulu ukugcinwa kwamanzi kwi-ether yayo ye-ether, kwaye ukuluka kwenye yezinto zokukhetha i-selupelose.

Ukutyibilika kunye neThuqiptropy ye-seluplose ether

Umsebenzi wesibini we-Iler Ither-Stackeng ixhomekeke: Inqanaba le-Polymerization ye-Teluplose Ether, isisombululo, inqanaba le-Shear, iqondo lobushushu 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. Kwi-MC kunye ne-HPMC nge-viscofity ephantsi, isisombululo se-10% -15% sinokulungiswa, i-5% ye-5% ye-5% inokulungiswa kwi-viscofity ye-MC kunye ne-HPMC, kunye ne-HPMC, kwaye i-2% yesisombululo se-1%. I-ethectur-moleculase-molesuse i-ether i-Ether ineendlela eziphezulu kakhulu. I-Polymers ezinamatye ahlukeneyo eemolekyuli zinee-viscofis ezahlukeneyo kwisisombululo esifanayo. 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. Inkxaso-mali ye-HPMC iphezulu kubushushu begumbi.

Ukungqinelana kunokulungiswa ngokukhetha ubungakanani be-paulticle kwaye ukhethe iiselwase 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.

Ukusuka kumzobo 4 Singabona ubudlelwane phakathi kokuguquguquka kunye nokuguqulwa. Ukongezwa kwe-Teluplose Ether kwi-5 ichaphazela ukusetyenziswa kodaka kodaka kwaye kutshintsha umyinge wamanzi ukuya kwi-quances, osisiphumo esihle. Ukuphakama kwedosi, kokukhona kuqhelekileyo 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, jonga umfanekiso 6.

Isisombululo se-vissosity se-ethe molous ye-etheeus atheeus i-ThixitRopy ephezulu, ekwangumlinganiswa omkhulu we-ether yeseluplose. Izisombululo ze-ACCECHE ze-MC-chendmers zihlala zine-pseudoplastic kunye ne-non-th-th-th-th-th-th-th-th-th-thyropic freyidity ingezantsi kweqondo lokushisa, 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 yeselsese i-ether, ilunge ngakumbi ekugcinweni kwamanzi, kodwa iphakamile i-vissosity ye-felulose ye-ether, kunye nefuthe elilinganayo kuxinzelelo lwe-Colmar. 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