Kodi hydroxypropyl methl cellulose hpmc?

Hydroxypropyl me cellulose hpmc ndi ma cellulose osakanikirana ndi ma ethel carboxyl carboxyl carborse, sizikugwirizana ndi zitsulo zolemera. Okondedwa a oxygen chifukwa cha hydroxypropyl celyl zomwe zili ndi mitundu yosiyanasiyana, mwachitsanzo, ntchito yake ili pafupi ndi methyl cellulose ndi methoxyl Zokhumba ndi zochulukirapo za mitundu ya hydroxypropyl, ndipo magwiridwe antchito ali pafupi ndi hydroxypropyl cellouse amapangidwa. Koma m'njira zosiyanasiyana, ngakhale zili zochepa chabe za hydroxypyl kapena methoxy yaying'ono, kusungunuka mu sodic kapena kutentha kwamphamvu mu njira yothetsera matenda, pali kusiyana kwakukulu.
 
1, hydroxypropyl methl cellulose solubility
Hydroxypropyl mealyl cellulose yosungunuka madzi a hydroxypropyl cellyl celyl cellulose, motero amakhala ndi ma proulose ozizira, motero amasungunuka. Komabe, kutentha kwa kutentha kwa hydroxy proyl ndikokwera kwambiri kuposa kwa methyl cellulose m'madzi otentha. Mwachitsanzo, mamasukidwe a hydroxypropyl mankhwala ang'onoang'ono a metosose ndi ma hy = 0.46 ndi 500 MPA pa 20 ℃. Kutentha kwa gel kuli pafupi ndi 100 ℃, pomwe wa methyl cellulose yomweyo ndi 55 ℃. Ponena za kusungunuka m'madzi, mothandizidwa kwambiri, mwachitsanzo, pambuyo pa kuphwanya kwa hydroxypropyl (mawonekedwe a tirigu 0,5 ~ .
 
. DS = 0.2 ~ 1.0, ma vicectoni apamwamba hydroxpyl cellulose okhala ndi ma mehydrous methanol ndi kusintha kwa ethanol, ndipo ali ndi madzi otentha. Amasungunukanso mu hlornated hydrocarbons monga dichlorometane ndi trichlororthane, ndi ordororthane, ndi ma soportic monga acetone, isopropyl mowa, ndi mowa wamagazi. Kusungunuka kwake m'malo okhazikika kumalimbikitsa kususuka kumadzi.
 
2, hydroxypropyll methyl cellulose akukweza zinthu zomwe zisoweka
Hydroxypropyl a methylcellulose oscress Makulidwe omwewo, ndikuwonjezera ndende ndikuwonjezeka, kuchuluka kwa zolemera zosiyanasiyana kwa zolemera zolemera, zochulukitsa za malonda ndi mamasukidwe kwambiri. Ubwenzi wake ndi kutentha kwake ndi wofanana ndi wa methyl cellulose. Kutentha kukayamba kuchepa, koma ikayamba kuchepa, koma ikafika pamawu, ma viscy modzidzimutsa akukwera ndipo yitali imachitika. Kutentha kwa zinthu za zinthu zomwe zimakhala ndi mafayilo otsika ndizokwera kuposa zomwe zimapangidwa ndi mafayilo akulu. Mulingo wa gel ya gel, kuwonjezera pa ufa wapamwamba komanso wotsika kwambiri wa ether, komanso ndi e methoxy ndi hydroxypropyl gulu lazigawo ndi kuchuluka kwa zomwe zimaperekedwa. Tiyenera kudziwa kuti hydroxpyl methylcellulose ilinso preeudoplastic; Njira yake imakhala yokhazikika ikasungidwa kutentha kwa chipinda ndipo sizikuwonetsa kuwonongeka kwa ma visction kupatula kuthekera kwa kuwonongeka kwa enzymatic.
 
3, hydroxypropyl methl cellulose asidi ndi alkaline kukana
Hydroxypylmyl methylcelulose alkali hydroxypypyl acidylcellulose acid, mu pH Ph Acid, Boric acid, ndi zina zotere. Alkali monga caustic soda, caustium potaziyamu ndipo madzi a laimu alibe mphamvu, koma zowonjezera pang'ono zikuwoneka kuti zikuwoneka bwino mtsogolo.
 
4, hydroxypropyl methyl cellulose ikhoza kusakanikirana
Hydroxypropyl cellulose yankho limatha kusakanizidwa ndi ma polymer polymer, ndikukhala yunifolomu yowonekera bwino ndi mafayilo apamwamba. Mankhwala apamwamba kwambiri awa ndi polyethylene glycol, polyvinyl acetate, polymethyl ntholic, dzombe yankho. Hydroxypropyl mealose amathanso kusakanikirana acid acid kapena palmitic acid mannitol ester kapena sorcrol, sorrolol, sorroxpyl dialulose Mapirapizer.
 
5, hydroxypropyl methl cellulose insuluble madzi osungunuka
Hydroxypropyl medilose in cellulose yopanda madzi ether ether, itha kukhala yolumikizirana ndi Aldehydes, ndikupangitsa kuti madzi osungunuka am'madzi azikhala ndi madzi osungunuka. Ndikupanga hydroxypropyl methylcelulose inlelyebyde, formaldehyde, nelganinal solter, etc. -Kuthandizira. Mlingo wa mtundu uwu wa wopereka mu yankho ndi 0,2% ~ 10% ya elther, zabwino kwambiri ndi 7% ~ 10% ~ 6% ndiyoyenera kwambiri. Kutentha kwakukulu kwa mankhwala ndi 0 ~ 30 ℃, nthawi ndi 1 ~ 120min. Kulumikizana kolumikizana kumafunikira kuchitika pansi pa acidic mikhalidwe. Nthawi zambiri, atorganic acid acid kapena organic carboxylic acid amawonjezeredwa ku yankho kuti asinthane ndi yankho la 2 ~ 6, kenako Aldehydes amawonjezeredwa chifukwa chogwirizana. Acids omwe amagwiritsidwa ntchito ndi hydrochloric acid, sulfuric acid, a phosphoric acid, acectic acid, hydroxy acid kapena aceroxy acid ndi abwino kwambiri, pomwe acetic acid ndiye abwino kwambiri. Acids ndi Aldehydes amathanso kuwonjezeredwanso nthawi yomweyo kuti yankho lanu lizilowetsedwa pamlingo wofunikira. Izi zimagwiritsidwa ntchito nthawi zambiri pomaliza kusinthana kwa cellulose ether, kuti ma mule ether sasungunuka, osavuta kugwiritsa ntchito madzi 20 ~ 25 ℃ ℃ Kusamba ndikuyeretsa. Izi zikagwiritsidwa ntchito, zinthu zam'madzi zitha kuwonjezeredwa ku yankho la malonda kuti asinthe PH ya yankho kuti akhale alkaline, ndipo mankhwalawa amasungunuka mwachangu mu yankho. Njira iyi imatha kugwiritsidwanso ntchito ngati cellulose soluse imagwiritsidwa ntchito popanga filimu kenako filimuyo imathandizidwa kuti ipange filimu yotanuka.
 
6, hydroxypropyl methl celluse anti-enzyme
Hydroxypyl methl cellulose enzyme kukana kwa cellulose zotumphukira monga magulu okhazikika am'magulu, koma kuti chinthu chomaliza kuti chibweretse mtengo woposa 1, Komanso ndi enzyme kuwonongeka, uku ndikulongosola kwa gulu lililonse mu cellulose digiri ya cellulose sikuti kuwonekera pafupi ndi magulu osasunthika a shugase, omwe amatha kuyamwa ndi tizilombo tating'onoting'ono. Chifukwa chake, ngati kuchuluka kwa ma cellulose kumawonjezeka, kukana kwa cellulose ethermose kupita ku enzymatic ernosition kudzakulitsidwa. Amanenedwa kuti pansi pa mikhalidwe yolamulidwa, yotsalira ya hydroxypyl methyl cellose (DS = 1,86), 7.2%, 7.3% , 3.8%, ndi 1.7%, motsatana. Hydroxypropyl methl cellulose ili ndi luso lamphamvu la anti-enzyme. Chifukwa chake hydroxypropyl methylcellulose yabwino kwambiri anti-enzyme, kuphatikiza ndi kubalalika kwake, kuphatikizika ndi mafilimu, omwe amagwiritsidwa ntchito pochulukitsa. Komabe, kuti tipewe kusungitsa kwa nthawi yayitali kapena zodetsedwa kuchokera kudziko lakunja, zosungirako zoteteza zitha kuwonjezeredwa, omwe kusankha kwake kumatha kutsimikizika malinga ndi zofunikira zothetsera vutoli. Phenylmercuric acetate komanso malawi a manganese amateteza, koma ndi oopsa ndipo ayenera kugwira ntchito mosamala. Nthawi zambiri, 1 ~ 5mg phenylmecuric acetate amatha kuwonjezeredwa pa lita imodzi yankho.
 
7, hydroxypropyl methl cellulose magwiridwe antchito
Hydroxypyl nothl cellulose magwiridwe antchito a hydroxypropyl pa celyl celyl ali ndi filimu yagalu, yowuma pambewu yagalasi, itatha filimu yowoneka bwino komanso yolimba. Ili ndi chinyontho chabwino ndipo khalani otentha kutentha kwambiri. Monga kuwonjezera kwa pulasitiki ya hygroscopic, imatha kukulitsa mphamvu zake komanso kusinthasintha, kusintha zinthu mosasunthika, glycerol ndi sorbite ndi pulasitiki wina ndikoyenera kwambiri. Yankho la General ndende ndi 2% ~ 3%, Mlingo wapulasitiki ndi 10% ~ 20% ya cellulose ether ether ether. Ngati zomwe zili mupulati ya pulasitiki ndi ntchito, shrinage shenomenon ya conloid kudzikuza kwambiri kumatha kukhala chinyezi chambiri. Mphamvu ya filimuyo yowonjezera pulasitiki ndi yayikulu kuposa yomwe siyikuwonjezeredwa, ndikuwonjezera kuchuluka kwa filimuyo imachulukitsidwanso ndi kuchuluka kwa pulasitiki.