Eter cellulosewaa unug polymer ah oo leh qaab dhismeed eter ah oo ka samaysan cellulose. Giraanta glucosyl kasta ee macromolecule cellulose wuxuu ka kooban yahay saddex kooxood oo hydroxyl ah, kooxda hydroxyl aasaasiga ah ee atomka lixaad ee carbon, kooxda labaad ee hydroxyl ee atamka labaad iyo saddexaad, iyo hydrogen ee kooxda hydroxyl waxaa bedelay koox hydrocarbon ah si ay u abuuraan waxyaabaha derivatives ether cellulose. Waa badeecad ay hydrogen ka mid ah kooxda hydroxyl ee polymer-ka cellulose lagu beddelay koox hydrocarbon ah. Cellulose waa iskudhis polyhydroxy polymer ah oo aan milmin mana dhalaalina. Etherification ka dib, cellulose waxay ku milmaysaa biyaha, milo xalalka alkali iyo dareeraha organic, oo leh heerkulbeeg.
Cellulose waa iskudhis polyhydroxy polymer ah oo aan milmin mana dhalaalina. Etherification ka dib, cellulose waxay ku milmaysaa biyaha, milo xalalka alkali iyo dareeraha organic, oo leh heerkulbeeg.
1.Dabeecada:
Solubility of cellulose ka dib etherification isbedel weyn. Waxa lagu milmi karaa biyo, aashito, alkali la milo ama dareere organic ah. Solubility inta badan waxay ku xiran tahay saddex arrimood: (1) Astaamaha kooxaha lagu soo bandhigay geeddi-socodka etherification, soo bandhigay Kooxda weyn, hoos u milanka, iyo xoog badan oo polarity ee kooxda la soo bandhigay, fudud ether cellulose waa in ay ku milmaan biyaha; (2) Heerka beddelka iyo qaybinta kooxaha etherified ee macromolecule. Inta badan ether-ka cellulose waxaa lagu milmi karaa biyaha hoostooda heer ka mid ah beddelka, iyo heerka beddelka ayaa u dhexeeya 0 iyo 3; (3) Heerka polymerization of ether cellulose, heerka sare ee polymerization, ka yar milmi; Heerka hoose ee beddelka ee lagu milmi karo biyaha, waa kala duwanaansho ballaaran. Waxaa jira noocyo badan oo ethers cellulose ah oo leh waxqabad aad u fiican, waxaana si weyn loogu isticmaalaa dhismaha, sibidhka, batroolka, cuntada, dharka, saabuunta, rinjiga, daawada, waraaqaha iyo qaybaha elektaroonigga ah iyo warshadaha kale.
2. Horumarin:
Shiinaha waa wax soo saarka iyo macaamiisha ugu weyn adduunka ee ether-ka cellulose, iyadoo celcelis ahaan heerka kobaca sanadlaha ah in ka badan 20%. Marka loo eego tirakoobka hordhaca ah, waxaa jira ilaa 50 shirkadood oo wax-soo-saar ether ah oo Shiinaha ah, awoodda wax-soo-saarka ee loogu talagalay warshadaha ether-ka cellulose ayaa kor u dhaaftay 400,000 oo tan, waxaana jira ilaa 20 shirkadood oo leh in ka badan 10,000 oo tan, oo inta badan lagu qaybiyo Shandong, Hebei, Chongqing iyo Jiangsu. , Zhejiang, Shanghai iyo meelo kale.
3. Baahida:
Sannadkii 2011, awoodda wax-soo-saarka Shiinaha ee CMC waxay ahayd ilaa 300,000 oo tan. Iyada oo ay sii kordhayaan baahida loo qabo ether-ka cellulose-ka tayada sare leh ee warshadaha sida daawada, cuntada, iyo kiimikooyinka maalinlaha ah, baahida gudaha ee alaabada kale ee ether-ka cellulose ee aan ahayn CMC ayaa sii kordheysa. , awoodda wax-soo-saarka MC/HPMC waa ilaa 120,000 oo tan, tan HECna waa ilaa 20,000 oo tan. PAC weli waxay ku jirtaa heerka gudbinta iyo codsiga Shiinaha. Iyada oo la horumarinayo beeraha waaweyn ee saliidda ee xeebaha iyo horumarinta qalabka dhismaha, cuntada, kiimikooyinka iyo warshadaha kale, qadarka iyo beerta PAC ayaa sii kordhaya oo sii kordhaya sanadba sanadka ka dambeeya, iyada oo awood wax soo saarkeedu ka badan yahay 10,000 tan.
4. Kala soocida:
Marka loo eego kala soocida qaabdhismeedka kiimikada ee beddelka, waxaa loo qaybin karaa anionic, cationic iyo ethers nonionic. Iyadoo ay ku xiran tahay wakiilka etherification ee loo isticmaalo, waxaa jira methyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose, ethyl cellulose, benzyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose cellulose, cyanoethyl cellulose, benzyl cyanoethyl cellulose, karboksyl cellulose. cellulose iyo ethyl cellulose ayaa aad waxtar u leh.
Methylcellulose:
Ka dib markii suufka la safeeyey lagu daaweeyo alkali, ether cellulose waxaa lagu soo saaraa falcelin taxane ah oo leh methane chloride sida wakiilka etherification. Guud ahaan, heerka beddelka waa 1.6 ~ 2.0, iyo solubility sidoo kale waa ka duwan yahay heerarka kala duwan ee beddelka. Waxay ka tirsan tahay ether-ka cellulose aan-ionic ahayn.
(1) Methylcellulose waxay ku milmi kartaa biyo qabow, wayna adkaan doontaa in lagu milmo biyo kulul. Xalka aqueous waa mid aad u deggan inta u dhaxaysa pH = 3 ~ 12. Waxay leedahay waafaqid wanaagsan istaarijka, xanjada, iwm. iyo waxyaabo badan oo surfactants ah. Marka heerkulku gaaro heerkulka gelation-ka, gelation wuxuu dhacaa.
(2) Haysashada biyaha ee methyl cellulose waxay kuxirantahay qaddarkeeda dheeriga ah, viscosity, cabbirka walxaha iyo heerka kala dirida. Guud ahaan, haddii qadarka dheeriga ah uu weyn yahay, ganaaxu waa yar yahay, iyo viscosity waa weyn yahay, heerka haynta biyuhu waa sarreeyaa. Waxaa ka mid ah, qadarka wax-ku-darku wuxuu saameyn weyn ku leeyahay heerka haynta biyaha, iyo heerka viscosity ma aha mid si toos ah u dhigma heerka xajinta biyaha. Heerka kala diriddu waxay inta badan ku xiran tahay heerka wax ka beddelka dusha sare ee qaybaha cellulose iyo ganaaxyada walxaha. Waxaa ka mid ah ethers-ka cellulose-ka ee kor ku xusan, methyl cellulose iyo hydroxypropyl methyl cellulose waxay leeyihiin heerar biyo-hayn ah oo sarreeya.
(3) Isbeddelka heerkulka ayaa si dhab ah u saameyn kara haynta biyaha ee methyl cellulose. Guud ahaan, marka uu heerkulku sarreeyo, way ka sii xumaanaysaa haynta biyaha. Haddii heerkulka hoobiye uu ka sarreeyo 40 ° C, haynta biyaha ee methyl cellulose si weyn ayaa loo dhimi doonaa, taasoo saameyn weyn ku yeelan doonta dhismaha hoobiye.
(4)Methyl cellulosewaxay saameyn weyn ku leedahay shaqada iyo isku xirnaanta hoobiye. “ku dheggan” halkan waxa ay tilmaamaysaa xoogga isku xidhka ee laga dareemayo aaladda codsadaha ee shaqaalaha iyo substrate darbiga, taas oo ah iska caabbinta dhogorta hoobiye. Xabaggu waa sarreeyaa, caabbinta dhogorta ee hoobiye waa weyn tahay, iyo xoogga looga baahan yahay shaqaalaha habka isticmaalka ayaa sidoo kale weyn, iyo waxqabadka dhismaha ee hoobiye waa mid liita. Isku-xidhka methyl cellulose waa heer dhexdhexaad ah oo ku jira alaabta etherka cellulose.
Hydroxypropylmethylcellulose:
Hydroxypropyl methylcellulose waa noocyo cellulose ah oo wax soo saarkooda iyo isticmaalkooda ay si degdeg ah u kordhayaan. Waa ether-ka isku qasan ee aan-ionic-ka ahayn oo laga sameeyay suuf la safeeyey ka dib alkalization, iyadoo la isticmaalayo propylene oxide iyo methyl chloride sida wakiilka etherification, iyada oo loo marayo falcelin taxane ah. Darajada beddelka guud ahaan waa 1.2 ~ 2.0. Sifooyinkeedu way kala duwan yihiin iyadoo ku xidhan saamiga maadada methoxyl iyo ka kooban hydroxypropyl.
(1) Hydroxypropyl methylcellulose waxay si fudud ugu milmi kartaa biyo qabow, waxayna la kulmi doontaa dhibaatooyin xagga ku milanka biyaha kulul. Laakiin heerkulkeeda gelation ee biyaha kulul aad ayuu uga sarreeyaa kan methyl cellulose. Ku milanka biyaha qabow sidoo kale si weyn ayaa loo hagaajiyay marka la barbar dhigo methyl cellulose.
(2) Viscosity of hydroxypropyl methylcellulose waxay la xiriirtaa miisaankeeda kelli, iyo marka uu weyn yahay miisaanka kelli, ayaa sare u kacaya viscosity. Heerkulka ayaa sidoo kale saameeya viscosity-kiisa, marka heerkulku kordho, viscosity ayaa hoos u dhacaya. Si kastaba ha ahaatee, saamaynta viscosity sare iyo heerkulku wuu ka hooseeyaa kan methyl cellulose. Xalkeedu waa mid deggan marka lagu kaydiyo heerkulka qolka.
(3) Haysashada biyaha ee hydroxypropyl methylcellulose waxay kuxirantahay qadarka dheeriga ah, viscosity, iwm.
(4)Hydroxypropyl methylcellulosewaxay u xasilloon tahay aashitada iyo alkali, iyo xalkeeda aqueous aad ayuu u deggan yahay inta u dhaxaysa pH=2 ~ 12. Caustic soodhaha iyo biyaha lime waxay saameyn yar ku leeyihiin waxqabadkeeda, laakiin alkali waxay dedejin kartaa kala diriddeeda oo wax yar kordhin kartaa viscosity-keeda. Hydroxypropyl methylcellulose waxay ku xasilloon tahay cusbada caadiga ah, laakiin marka fiirsashada xalka milixdu uu sarreeyo, viscosity of hydroxypropyl methylcellulose xalka wuxuu u muuqdaa inuu kordho.
(5) Hydroxypropyl methylcellulose waxaa lagu qasi karaa xeryahooda polymer-ka ee biyaha-milmi kara si loo sameeyo isku mid ah iyo xalka viscosity sare. Sida khamriga polyvinyl, eter istaarijka, xanjada khudradda, iwm.
(6) Hydroxypropyl methylcellulose waxay leedahay iska caabin enzyme ka wanaagsan methylcellulose, xalkeeduna aad bay u yar tahay in ay hoos u dhigto enzymes marka loo eego methylcellulose.
(7) Ku-dhejinta hydroxypropyl methylcellulose ee dhismaha hoobiye ayaa ka sarreeya kan methylcellulose.
Hydroxyethyl cellulose:
Waxaa laga sameeyay suuf la safeeyey oo lagu daaweeyay alkali, waxaana lagu falceliyay ethylene oxide sida wakiilka etherification iyadoo ay jirto isopropanol. Heerkeeda beddelka guud ahaan waa 1.5 ~ 2.0. Waxay leedahay hydrophilicity xoog leh oo ay fududahay in la nuugo qoyaanka.
(1) Hydroxyethyl cellulose waxay ku milmaysaa biyo qabow, laakiin way adagtahay in lagu milmo biyo kulul. Xalkeedu wuxuu ku xasilloon yahay heerkul sare oo aan lahayn gelling. Waxaa loo isticmaali karaa waqti dheer heerkulka sare ee hoobiye, laakiin haynta biyaha ayaa ka hooseeya kan methyl cellulose.
(2) Hydroxyethyl cellulose waxay ku xasilan tahay aashitada guud iyo alkali, iyo alkali waxay dedejin kartaa kala diriskeeda oo wax yar kordhinaysaa viscosity-keeda. Kala firdhisanaanteeda biyaha ayaa xoogaa ka sii daran tan methyl cellulose iyo hydroxypropyl methyl cellulose.
(3) Hydroxyethyl cellulose waxay leedahay wax qabad wanaagsan oo ka hortag ah oo hoobiye ah, laakiin waxay leedahay waqti dheer oo dib u dhac ah sibidhka.
(4) Waxqabadka cellulose-ka hydroxyethyl cellulose ee ay soo saaraan qaar ka mid ah shirkadaha gudaha ayaa iska cad in uu ka hooseeyo kan methyl cellulose sababtoo ah waxa ku jira biyaha oo sarreeya iyo waxa ku jira dambaska oo sarreeya.
(5) Caariyaynta dareeraha biyaha ee hydroxyethyl cellulose waa mid halis ah. Heerkul ku saabsan 40 ° C, caariyaysigu waxay ku dhici kartaa 3 ilaa 5 maalmood gudahood, taas oo saameyn doonta waxqabadkeeda.
Carboxymethyl cellulose:
Ether-ka loo yaqaan 'Lonic cellulose ether' waxaa laga sameeyaa fiilooyinka dabiiciga ah (suuf, iwm.) ka dib daawaynta alkali, iyadoo la isticmaalayo sodium monochloroacetate sida wakiilka etherification, oo lagu sameeyo daaweyn taxane ah oo falcelin ah. Heerka beddelka guud ahaan waa 0.4 ~ 1.4, waxqabadkeedana waxaa si weyn u saameeya heerka beddelka.
(1) Carboxymethyl cellulose waa hygroscopic badan, waxayna ku jiri doontaa biyo badan marka lagu kaydiyo xaaladaha guud.
(2) Carboxymethyl cellulose xal aqueous ma soo saaro jel, iyo viscosity hoos u korodhka heerkulka. Marka heerkulku ka sarreeyo 50 ° C, mawduucu waa mid aan la beddeli karin.
(3) Degganaanshaheeda waxaa si weyn u saameeya pH. Guud ahaan, waxaa loo isticmaali karaa hoobiyeyaasha gypsum-ku-saleysan, laakiin aan loo isticmaalin hoobiye-cement-ku-saleysan. Marka alkaline-ku sarreeyo, waxay lumin doontaa viscosity.
(4) Haysashada biyuhu aad bay uga hooseeyaan methyl cellulose. Waxay saameyn dib-u-dhac ah ku leedahay maadada gypsum-ku-saleysan waxayna yareysaa awooddeeda. Si kastaba ha noqotee, qiimaha karboxymethyl cellulose aad ayuu uga hooseeyaa kan methyl cellulose.
Cellulose Alkyl Ether:
Kuwa ka wakiil ah waa methyl cellulose iyo ethyl cellulose. In wax soo saarka warshadaha, chloride methyl ama ethyl chloride guud ahaan loo isticmaalo sida wakiilka etherification, iyo falcelinta waa sida soo socota:
Qaaciddada, R waxay u taagan tahay CH3 ama C2H5. Feejignaanta Alkali kaliya ma saamayso heerka etherification, laakiin sidoo kale waxay saamaysaa isticmaalka alkyl halides. Hoos u dhigista fiirsashada alkali, way sii xoogaysanaysaa hydrolysis ee halide alkyl. Si loo yareeyo isticmaalka wakiilka etherifying, xoojinta alkali waa in la kordhiyaa. Si kastaba ha noqotee, marka fiirsashada alkali ay aad u sarreyso, saameynta bararka ee cellulose waa la dhimaa, taas oo aan ku habooneyn falcelinta etherification, iyo heerka etherification waa la dhimay. Ujeedadaas awgeed, lye ama lye adag ayaa lagu dari karaa inta lagu jiro falcelinta. Reactor-ku waa inuu lahaadaa qalab walaaq iyo jeexid wanaagsan si alkaligu si siman loo qaybiyo. Methyl cellulose waxaa si weyn loo isticmaalaa sida dhumucdiisuna, xabagta iyo kolloid ilaalinta iwm Waxa kale oo loo isticmaali karaa sida kala firdhiso for polymerization emulsion ah, kala firdhiso bonding ah ee abuurka, slurry dunta ah, wax lagu daro cuntada iyo isku qurxiyo, a koollada ah daawo, alaabta daahan daroogada ah, oo loo isticmaalo rinjiga cinjirka ah, daabacaadda khad iyo kordhinta goobta xoogga sibidhka, isticmaalka wakhtiga hore ee dhoobada, iyo kordhinta awoodda dhoobada. iwm Alaabooyinka Ethyl cellulose waxay leeyihiin awood farsamo oo sare, dabacsanaan, caabbinta kulaylka iyo caabbinta qabow. Ethyl cellulose-ka hooseeya ee lagu beddelo waxay ku milmi kartaa biyaha waxayna milmaan xalalka alkaline, iyo alaabada beddelka sare leh waxay ku milmaan inta badan dareerayaasha dabiiciga ah. Waxay leedahay iswaafajin wanaagsan oo leh resins kala duwan iyo balaastikada. Waxaa loo isticmaali karaa in lagu sameeyo balaastikada, filimada, varnishes, xabagta, cinjirka iyo alaabta daahan ee daroogada, iwm Hordhac ah kooxaha hydroxyalkyl galay ethers cellulose alkyl hagaajin karaa ay milmay, la yareeyo dareenka ay u cusbo baxay, kordhiyo heerkulka gelation iyo hagaajin guryaha dhalaalaysa kulul, iwm. Heerka isbeddelka ee guryaha kor ku kala duwan yihiin dabeecadda kooxaha iyo hydroxyalk substituxyl.
Cellulose Hydroxyalkyl Ether:
Kuwa matalaya waa hydroxyethyl cellulose iyo hydroxypropyl cellulose. Waxyaalaha Etherifying waa epoxides sida ethylene oxide iyo propylene oxide. Isticmaal aashito ama saldhig si kicin ah. Wax soo saarka warshaduhu waa inay ka falceliyaan cellulose alkali leh wakiilka etherification:hydroxyethyl celluloseoo leh qiime sare oo beddelaad ah ayaa ku milmay biyaha qabow iyo biyaha kulul labadaba. Hydroxypropyl cellulose oo leh qiime sare oo beddelaad ah ayaa kaliya lagu milmaa biyo qabow laakiin kuma jiraan biyo kulul. Hydroxyethyl cellulose waxa loo isticmaali karaa dhumuc ahaan dahaarka cinjirka ah, daabacaadda dunta iyo koollada midabaynta, alaabta cabbirka warqadda, xabagta iyo koloyada ilaalinta. Isticmaalka hydroxypropyl cellulose wuxuu la mid yahay kan hydroxyethyl cellulose. Hydroxypropyl cellulose oo leh qiimihii beddelka hooseeya ayaa loo isticmaali karaa sidii qalab dawo ah, kaas oo yeelan kara sifooyin isku xidhan iyo kuwo burbura labadaba.
Carboxymethyl cellulose, soo gaabinta Ingiriisiga CMC, guud ahaan waxay u jirtaa qaabka cusbada sodium. Wakiilka etherifying waa monochloroacetic acid, falcelintuna waa sida soo socota:
Carboxymethyl cellulose waa eter-ka cellulose-ka ugu badan ee loo isticmaalo biyaha. Waagii hore, waxa inta badan loo isticmaali jiray sida dhoobada qodista, laakiin hadda waa la kordhiyey in loo isticmaalo sidii wax lagu daro oo ah saabuunta, dareeraha dharka, rinjiga cinjirka, dahaarka kartoonada iyo waraaqaha, iwm.
Polyanionic cellulose (PAC) waa eter-ka ionic cellulose waana wax soo saar heersare ah oo beddelka u ah carboxymethyl cellulose (CMC). Waa caddaan, cad-cad ama budo huruud ah ama granule ah, aan sun ahayn, aan dhadhamin, sahlan in lagu milmo biyaha si ay u sameeyaan xal hufan oo leh viscosity gaar ah, waxay leedahay xasillooni caabbinta kulaylka iyo caabbinta milixda, iyo sifooyinka bakteeriyada xooggan. Ma jiro caariyaysi iyo xumaan. Waxay leedahay sifooyinka nadiifnimada sare, beddelka heerka sare, iyo qaybinta isku midka ah ee beddelka. Waxaa loo isticmaali karaa sida binder, dhumuc weyn, rheology modifier, yareeyaha luminta dareeraha, stabilizer ganaax, iwm Polyanionic cellulose (PAC) waxaa si ballaaran loo isticmaalaa in dhammaan warshadaha halkaas oo CMC lagu dabaqi karo, taas oo si weyn u dhimi kartaa qiyaasta, fududeeyo isticmaalka, bixiyaan xasillooni ka wanaagsan iyo buuxiyo shuruudaha nidaamka sare.
Cyanoethyl cellulose waa sheyga falcelinta cellulose iyo acrylonitrile ee hoos yimaada catalysis of alkali.
Cyanoethyl cellulose waxay leedahay dielectric joogto ah oo hooseeya iyo iskudhaf yar oo khasaare ah waxaana loo isticmaali karaa matrix resin ah fosfoor iyo nalalka elektroluminescent. Cyanoethyl cellulose-ka hooseeya ee lagu beddelay ayaa loo isticmaali karaa sidii warqad dahaadh ah oo loogu talagalay transformers.
Aalkolada dufanka badan ee ethers, alkenyl ethers, iyo ethers alkohol udgoon ee cellulose ayaa la diyaariyey, laakiin aan loo isticmaalin si dhab ah.
Hababka diyaarinta ee ether cellulose waxaa loo qaybin karaa habka dhexdhexaadka ah ee biyaha, habka dareeraha, habka cajiinka, habka slurry, habka gaaska adag, habka dareeraha dareeraha ah iyo isku dhafka hababka kor ku xusan.
5.Mabda'a diyaarinta:
Saxarka sare ee α-cellulose waxaa lagu qooyay xal alkaline ah si ay u bararaan si ay u burburiyaan curaarta hydrogen ka badan, fududeeyaan faafinta reagents iyo abuuraan cellulose alkali, ka dibna la falgal wakiilka etherification si aad u hesho ether cellulose. Walxaha soo saara waxaa ka mid ah halides hydrocarbon (ama sulfates), epoxides, iyo α iyo β xeryahooda aan saturated lahayn oo leh aqbaleyaasha elektarooniga ah.
6.Waxqabadka aasaasiga ah:
Isku-dhafka ayaa door muhiim ah ka ciyaara hagaajinta waxqabadka dhismaha hoobiyeyaasha qallalan ee qalalan, waxayna xisaabiyaan in ka badan 40% qiimaha alaabta ee hoobiyeyaasha qallalan ee qallalan. Qayb weyn oo ka mid ah isku-darka suuqa gudaha waxaa bixiya shirkado ajnabi ah, qiyaasta tixraaca ee alaabta waxaa sidoo kale bixiya alaab-qeybiyaha. Natiijo ahaan, qiimaha alaabada hoobiyeyaasha ee qallalan ee qallalan ayaa weli ah mid sarreeya, wayna adagtahay in la faafiyo dhagaxyada caadiga ah iyo dhoobada dhoobada oo leh qadar badan iyo baaxad ballaaran. Badeecadaha suuqa ugu sarreeya waxaa gacanta ku haya shirkado ajnabi ah, iyo soosaarayaasha hoobiyeyaasha qallalan ee qallalan waxay leeyihiin faa'iido yar iyo qiimo jaban; Codsiga isku-dhafka ayaa ka maqan cilmi-baaris nidaamsan oo la beegsanayo, waxayna si indho la'aan ah u raacdaa qaacidooyinka shisheeye.
Wakiilka biyuhu waa isku-darka muhiimka ah si loo hagaajiyo waxqabadka haynta biyaha ee hoobiye-isku-dhafka qallalan, sidoo kale waa mid ka mid ah isku-darka muhiimka ah si loo go'aamiyo qiimaha alaabta dhoobada ee qallalan. Shaqada ugu weyn ee ether cellulose waa haynta biyaha.
Ether Cellulose waa erey guud oo taxane ah oo badeecado ah oo ay soo saartay falcelinta cellulose alkali iyo wakiilka etherifying ee xaaladaha qaarkood. Alkali cellulose waxaa lagu beddelaa wakiilada etherifying kala duwan si ay u helaan ethers cellulose kala duwan. Marka loo eego sifooyinka ionization ee beddelka, ethers cellulose waxaa loo qaybin karaa laba qaybood: ionic (sida carboxymethyl cellulose) iyo nonionic (sida methyl cellulose). Marka loo eego nooca beddelka, etherka cellulose waxa loo qaybin karaa monoether (sida methyl cellulose) iyo ether isku dhafan (sida hydroxypropyl methyl cellulose). Marka loo eego milanka kala duwan, waxa loo qaybin karaa milanka biyaha (sida hydroxyethyl cellulose) iyo dareeraha dareeraha organic (sida ethyl cellulose). Hoobiye-qalalan ayaa inta badan ah cellulose-biyood ku milma, iyo cellulose-ka-milmi kara waxay u qaybsan tahay nooc degdeg ah iyo nooca daah-kala diri-daahsan oo dusha lagu daweeyay.
Habka ficilka ether cellulose ee hoobiye waa sida soo socota:
(1) Kadibether celluloseHoobiyaha waxaa lagu kala diraa biyaha, qaybinta waxtarka iyo isku midka ah ee walxaha sibidhka ee nidaamka ayaa la hubiyaa sababtoo ah dhaqdhaqaaqa dusha sare, iyo ether cellulose, oo ah koloid ilaalin ah, "ku duub" qaybaha adag iyo lakabka filimka saliidda ayaa lagu sameeyay dusha sare ee dusha sare, taas oo ka dhigaysa nidaamka hoobiye si aad u xasilan, iyo sidoo kale hagaajinta dheecaanka iyo dheecaanka inta lagu jiro habka isku dhafka ah ee dhismaha.
(2) Iyadoo ay ugu wacan tahay qaab-dhismeedkeeda molecular, xalka ether-ka cellulose wuxuu ka dhigayaa qoyaanka ku jira hoobiye aan sahlanayn in la lumiyo, oo si tartiib tartiib ah u sii daaya muddo dheer, taas oo ku siinaysa hoobiye biyo-hayn wanaagsan iyo shaqeyn.
Waqtiga boostada: Abriil-28-2024