Hydroxypropyl bylulose cholue hpmc waa nooc ka mid ah unugyada unugyada inic mether-ka, kaas oo ka duwan kan loo yaqaan 'methyl phitylymeyl cetter', oo aan ka falcelin bir culus. Sababo la xiriira saamiyada kaladuwan ee chisroxyl iyo hydroxypropyl ee ku jira hydroxypropyl playlrcellulose iyo viscoxyl-ka kaladuwan ee wax qabadkeeda, iyo noocyada metroxyl-ka hooseeya, iyo noocyada hydroxypropyl, waxqabadka ayaa ku dhow in taasi ka mid ah hydroxypropyl methylrcelrelose. Si kastaba ha noqotee, noocyo kala duwan, in kasta oo kaliya oo ah kaliya in yar oo ah koox hydroxypropyl ama qayb yar oo ah kooxda chotroxy-ka ayaa ku jira, xaruuda xariga solves-ka dabiiciga ah ama heerkulka unugyada unugyada ah ee xalka aquous aad ayuu u kala duwan yahay.
1. Xoolaha xoolaha ee hydroxypropyl methylrcellesulose
Inluleuble of hydroxypropylyluy methyl cell by byroxypropyl by byluyl bylul by by by by by by cluyl oxide (methyl oxideprenene), sidaa darteed waxay wali haysataa isku xirnaan methyl oo methylus ah. Cellulose wuxuu la mid yahay jilitaanka biyaha qabow iyo isbuunyo biyo kulul. Si kastaba ha noqotee, sababtuna tahay kooxda hyroxypropyl, heerkulka gelitaanka ee biyaha kulul ayaa aad uga badan kan methyl bylulose. Tusaale ahaan, aragtida ah ee xalka biyaha ee hydroxypropyl methylrcellellase leh 2% chistoxyl nus ds = 0.73 iyo hydroxypropyl ms = 0.46 waa 500 MPA? S 20 ° C. Heerkeeda gel waxay gaari kartaa ku dhawaad 100 ° C, halka methylrcellulose isla isla heerkulku uu yahay 55 ° C. Sida loo xaliyo xalideeda biyaha, sidoo kale si weyn ayaa loo hagaajiyay. Tusaale ahaan, jajabinta hyroxypropyl methylrcellellase (qaabka grasanular ee 0.2 ~ 0.2 ° C oo ah viscosity of the 4% xalka aqueous ah ilaa 2ta aquaous?
Xoolaha Hydroxypropyl bylulose ee buluuga ah ee jilicsan ee butyl bylulose ee 'Metroxyl' ayaa sidoo kale ka fiicantahay 'celylul' ee methoxyl-ka ah, iyo methoyl byluxyplose methylcellosulose waxaa ku jira hydroxypropyl Ms = 1.5 ~ 1.8 iyo Methoxy DS = 0.2 ~ 1.0, iyo heerka guud ee shahaadada ka sarreeya 1.8 waxay ku milmaysaa methanol-ka-methanol iyo itmoloplastlas-ka iyo biyaha-lo'da. Waxay sidoo kale ku milmaysaa hydrocarbons-ka chlororiyons sida dichloromethane iyo chloroform, iyo solvorts dabiiciga ah sida acetone, isopropanol iyo aalkolada diaadetone iyo diacotol. Xaraashkeeda xariga dabiiciga ah ayaa ka fiican biyo-ku-milma.
2. Waxyaabaha saameeya Viscosity of hydroxypropyl methylrcellelus
Saameyn ku yeelashada sababaha hydroxypropyl bylulose velcosity velcosity viscors-ka hydroxypropylyl bylule, sida anshaxa kale ee keli ah, waxay ku saleysan tahay 2% xalka aqueous ee 20 ° C. Muuqaalka isla badeecada wax soo saarku waxay kordhisaa kororka feejignaanta. Alaabada leh miisaanka molika ee kala duwan ee isku-darka, alaabada leh miisaanka waaweyn ee molikal waxay leeyihiin viscosity-ka sare. Xiriirkeeda uu ku leeyahay heerkulka wuxuu la mid yahay kan methyl bylulose. Markay heerkulku kordho, balsaalku wuxuu bilaabmayaa inuu yaraado, laakiin markay gaarto heerkul gaar ah, muuqaalku si lama filaan ah ayuu u kordhayaa oo uu dhacayaa. Heerkulka jel ee waxyaabaha ka soo baxa viscosity-ka ayaa ka sarreeya. waa mid sare. Dhiskuushiisa ayaa kaliya la xiriiraa oo keliya aragtida ether, laakiin sidoo kale saamiga isku dhafka ah ee Methoxy iyo hydroxypropopyl ee ether iyo wadarta guud ee beddelka. Waa in la ogaadaa in hydroxypropylylchellelose ay sidoo kale tahay pudoudoplastlastlastlastlastlas-ka oo uu deggan yahay heerkulka qolka iyada oo aan wax ka soo baxdan oo aan ahayn suurtogalnimada jaceylka.
3. Hydroxypropylkylecelrcellellase acid iyo iska caabbinta alkali
HydroxypropylBlulose Methylcelrellase acid iyo iska caabbinta Alkali Hydroxypropylylkellellalose guud ahaan waxay ku xasilloon tahay aashitada iyo alkali, oo aan wax saameyn ah ku yeelanin FARSAMADA PH 2 ~ 12. Waxay u adkeysan kartaa xaddi cayiman oo aashitada ah. Sida acid formissic, aashitada acetic, citric acid, sunta sacikik, phosphoric acid, boric acid, iwm. Si kastaba ha noqotee, aashitada ayaa leh saameynta yareynta viscosity Alkali sida soodhada cagafka, caustic potash iyo liin biyo ma aysan kordhin waxoogaa, ka dibna waxaa jiri kara ifafaale hoos u dhac tartiib ah mustaqbalka.
4. Isku-darka hydroxypropyl methylrcellesuse
Nurosnaanta ee hydroxypropylpyl methyluse cluyroxpropylfypyl xalka unugyada 'bymyyl meymy' ayaa lagu qasin karaa xarunta polymer-ka-biyo-siinta si loo noqdo mid labis ah iyo xalka hufnaanta ee viscosis-ka. Xogtan polyverylen-ka waxaa ka mid ah polyvylne glycol, polyvinyl acetate, polysilomane, pystyrethyl vinylyl, hydroxytyl cellulose iyo melulose cellyl. Xasuudiyadii Polymer ee dabiiciga ah sida ciridka ciridka, xanjada digaagga abu, xanjo Karada, iwm. Hydroxypropylylrcellellalose sidoo kale waxaa lagu qasi karaa Mannitol ama enber-ka sirimaha sadex acid ama palmitic acid, oo sidoo kale lagu qasi karo glycrin, sartol iyo Mannitol. Xeerarkan waxaa loo isticmaali karaa sida biyo ku dhaca hydroxypropyl methylcelrelose. Biyo-balaastig ku saleysan cudurka cellulose.
5. Xadhiga is-dhexgalka iyo xoolaha biyaha ee hydroxypropyl methylrcellesuse
Qormadii unugyada biyaha ee liita ee ku-meel-gaarka ah ee ku-meel-gaarka ah ee hydroxyplopyl methylrcellellase wuxuu noqon karaa mid dusha sare ah oo lagu buufiyo aldehydes, oo ay ka xireen qormooyinka biyaha biyaha ku-milma ee biyaha oo ay ku jiraan biyo. ALDEHYDES oo sameeya hydroxypropylylrelose methaldehyde waxaa ka mid ah Forcialdehyde, gelcaldehyde, isdipaldehyde, iwm. Sidaa darteed, glomal waxaa caadi ahaan loo istcimaalaa sida wakiilka iskutallaabta ah wax soo saarka warshadaha. Qiyaasta nooc ka mid ah wakiilka iskutallaabta ee xalka waa 0.2% ~ 10% ee tirada badan, gaar ahaan 7% ~ 10%, iyo 3.3% waa kuwa ugu habboon ee gelwalka. Heerkulka guud ee daaweynta waa 0 ~ 30 ℃, oo waqtiguna waa 1 ~ 120min. Fal-celinta iskutallaabta isku xirka ayaa loo baahan yahay in lagu qaado shuruudaha aashitada. Guud ahaan, inortanic acid adag ama shey dabiici ah oo dabiici ah ayaa lagu daray xalka si loo habeeyo pH-ga xalka xalka xalka xalka xalka xalka xalka xalka xalka xalka illaa 2 ~ 6, ka dibna lagu daro inta u dhaxaysa 4 ~ 6, ka dibna aldehydes ayaa lagu daray si ay u fuliyaan isgoyska isku xirka isku xirka isku xirka isku xirka isku xirka. . Acids loo isticmaalo waxaa ka mid ah hydrochloric acid, sulfuric acid, acid phosphoric, acid acid, acid aashito ama acid aashito ama acetic acid ay ku habboon yihiin, oo aashito acid ayaa ah kuwa ugu fiican. Asiidhka iyo aldehyde sidoo kale waxaa lagu dari karaa isku mar si loo oggolaado in xalka uu ka gudbo tirada PH ee la doonayo. Fal-celintaan waxaa badanaa loo isticmaalaa geedi socodka daaweynta ugu dambeysa ee habka diyaarinta ee anshaxa qalliinka ee keli ah. Ka dib markii clulolose ether la faafiyo, waa ku habboon tahay in lagu maydho oo lagu nadiifiyo biyo 20 ~ 25 ° C. Marka sheyga la isticmaalo, walax alkaline ah ayaa lagu dari karaa xalka sheyga si loo hagaajiyo PH-ga xalka uu yahay alkaline, iyo sheyguna si dhakhso ah ayuu u milmi doonaa xalka. Qaabkan ayaa sidoo kale lagu dabaqi karaa xalka unugyada chet-ka ee loo yaqaan 'celle ether' oo lagu sameeyay filim ka dibna filimka waxaa looga shaqeeyaa inuu ka dhigo filim aan ka dhigin.
6.
Hydroxypropyl methylcelrenose wuxuu u adkaysanayaa enzymes. Fikrad ahaan, astaamaha unugyada unugyada, sida koox kasta oo absydroglucose ah, oo ah koox wax ku ool ah oo iskuxiran, oo aan ahayn in la soo saaro shey ka mid ah silsiladda unugyada ee koox kasta oo ku filan, iyo microorerwanalismku wuu dhaqaaqi karaa meel u dhow Kooxaha isku-darka ah ee aan la xakamayn karin si ay u sameeyaan sonkor. , kuwaas oo la nuugo sidii nafaqooyin loogu talagalay sheyga. Sidaa darteed, haddii heerka shahaadada loo yaqaan 'Ethelka' ee Qiyaasta Cilmiga Qeexitaanka unugyada unugyada ah, caabbinta nabaad-guurka nabaad-guurka unugyada unugyada unugyada laf-dhabarka ayaa sidoo kale la wanaajiyaa. Waxaa la soo waramayaa in booska haraaga ah ee hydroxypropyl methylrcellellase (ds = 1.9) waa 13.2%, 1.83) waa 7.3%, 1.66) waa 3.8%, iyo hydroxytyl cellule waa 1.7%. Waxaa la arki karaa in awoodda anti-enzyme ee hydroxypropyl methylcelrellase uu xoog badan yahay. Sidaa darteed, caabbinta enzyme enzyme ee wanaagsan ee hydroxypropylylulolose, oo ay weheliso kala-soockeeda wanaagsan, oo lagu daray deganaanshaheeda, guud ahaan waxaa loo isticmaalaa jaakadaha biyaha-emulsion, iwm. Si kastaba ha noqotee, kaydinta muddada-dheer ee xalka ama faddaraynta suuragalka ah ee adduunka dibedda, waxyaabaha lagu keydiyo waxaa lagu dari karaa is-xakameyn, doorashada waxaa lagu go'aamin karaa iyadoo loo eegayo shuruudaha ugu dambeeya ee xalka. Phenylmercuric acetate iyo manganese-ka founces-ka waa kuwa wax ku ool ah, laakiin waxay leeyihiin sunta rasaasta, waa in labadaba la siiyaa hawlgalka, qiyaasta qaadashada guud ahaan 1 ~ 5mg ee phenylmerercicce acetate halkii litir xalka.
7. Garsoorayaasha ee hydroxypropyl methylcellesulose filimka
Waxqabadka Hydroxypropylylylulose methyrexelrellose filim hydroxypropylcelrelolose wuxuu leeyahay filim-filim oo wanaagsan, iyo xalka dareeraha ee dabiiciga ah ama xalka aqibaada u leh, oo waxay noqotaa mid midab lahayn iyo hufnaan ka dib qalajinta iyo daahfurka. Iyo filim adag. Waxay leedahay iska caabin qoyan oo wanaagsan oo weli ku adag heerkulka sare. Tusaale ahaan, ku darista qalabka caagga ah ee hygroscopizer wuxuu kor u qaadi karaa dalaggiisa iyo dabacsanaanta. Si kor loogu qaado dabacsanaanta, balacayaasha sida glycerin iyo sartolka waa kuwa ugu habboon. U fiirsashada xalka guud waa 2% ~ 3%, iyo xaddiga balastarxiinta waa 10% ~ 20% oo ka mid ah unugyada celler. Haddii nuxurka ay caagadu aad u sarreyso, ifafaalaha kala-goynta fuuqbaxa ee colloid waxay ku dhici doontaa qoyaan badan. Awoodda togan ee filimka oo ay ku jiraan balastar-ka ayaa aad uga ballaaran kan aan lahayn balakool, waxayna ku kordheysaa kororka qaddarka lagu daray. Sida loogu talagalay hygroscopicity filimka, waxay sidoo kale kordhisaa kororka qaddarka balaastigga ah.
Waqtiga Post: Feb-20-2025