Tarisa pane cellulose ana

Synthesis uye chigadzirwa hunhu hwe hydroxyprupyl methylcellose

Hydroxyprupyl methylcellose (HPMC)is is is is-ionic cellulose ether yakagadzirwa kubva kune yakasikwa cellulose kuburikidza nemakemikari kugadziridzwa. Inoshandiswa zvakanyanya muminda yekuvaka, mushonga, chikafu uye cosmetics. Maitiro ayo eSynthesis uye maitiro echigadzirwa anozvipa zvakasiyana kuita uye anogona kuzadzisa zvakasiyana-siyana zveAndisitori.

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1. Synthesis ye hydroxyprupyl methylcellose

Kugadziriswa kweKimacell®hpmc inoshandisa zvakasikwa cellulose cellulose Iyo chaiyo synthesis maitiro inosanganisira inotevera nhanho:

 

Alkalization ye cellulose

Cellulose Raw Zvishandiso (senge cotton propp kana huni purpi) yakasanganiswa ne sodium hydroxide solution uye yakasarudzika pane imwe tembiricha uye kumanikidzwa kugadzira Alkali cellulose. Maitiro eAlkalization anowedzera iyo cellulose molecular cheni uye inowedzera kuenderana kwayo neiyo yekuzadzisa mumiririri.

 

Erafied maitiro

Alkali cellulose inoitwa ne formaldehyde uye procylene glycol procalyone oxide kuti igadzire hydroxypruslELL. Munguva yekuita, methylation uye hydroxpremyprationlation

 

Kusarerekera uye kugeza

Mushure mekunge zvapera, mhinduro ye acidic inowedzerwa kuti isimbe nemusanganiswa wekuita, uye washambwa nemvura kuti ubvise zvisingaoneki zvisina kufanira uye ne-zvigadzirwa kuti uwane pombi yakachena.

 

Kuomesa uye kupwanya

Iyo HPMC yakaomeswa kune yakaderera moisture yakanyorova uye yakapwanywa muupfu kuti uwane chigadzirwa chekupedzisira. Iyo size yechigadzirwa chechigadzirwa inogona kugadziridzwa zvinoenderana nezvinodiwa zvekushandisa.

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2. Chigadzirwa hunhu hwe hydroxyprupyl methylcellose

HPMC ine akasiyana emuviri uye makemikari zvivakwa, izvo zvinoita kuti zvifadze mune dzakasiyana siyana dzekushandisa:

Yakanakisa mvura solubility

HPMC inogona kukurumidza kunyungudutswa mumvura inotonhora kuti igadzire mhinduro yakajeka cooludal, uye iyo solubility haina kukanganiswa nekuomeswa kwemvura. HPMC iri kushayiwa mumvura inopisa, asi inogona kudzoreredza solubility mushure mekunge mvura yapera. Ichi chivakwa chinoita kuti zviite zvakakodzera zviono izvo zvinoda mari yekubhadhara gelation.

Yakagadzikana makemikari zvivakwa

HPMC chinhu chisiri-ionic nechisimba chakanaka kune acids, alkalis nemaronda, uye chinogona kuramba chakagadzikana pasi pePR mamiriro akapokana.

Yakanaka kuremerwa uye yakadhindwa zvivakwa

Mhinduro yemvura yeHPMC ine yakakosha mhedzisiro, uye viscosity yayo inowedzera nekuwedzera kwekuwedzera uye suremu. Yayo inonamatira uye mafirimu-ekuumba midziyo inoita kuti zviite zvakanaka mumakonzo uye maanomanyemba.

Yakanakisa inopisa zvigadzirwa zvemukati

HPMC Solution inogadzirisa Gungwa rekushandurwa kana ichipiswa uye inodzokera kumamiriro ekunze mushure mekutonhora. Iyi etermal denderedzwa pfuma inoshandiswa zvakanyanya muzvivakwa zvekuvaka (senge simende) kugadzirisa maitiro ekuvaka.

Non-ine chepfu uye biocompable

Sezvo HPMC inotorwa kubva kune yakasikwa cellulose uye ine yakanakisa biooplose uye yakanyanya kuwanda mune zvekudya zvekudya uye seyakawedzera zvinyorwa zvemapiritsi ekudzora zvinodhaka.

Kuchinjika Kugadzirisa Kuita

Dhigirii rekutsiva

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3. Minda yekushandisa uye tarisiro

Hpc Inogona kushandiswa sedanda rakakomberedza uye mvura inobhadhara mumunda wekuvaka, sekusimbisa kwezvinodhaka Nekufambira mberi kweGreen Chemistry uye Surtifable Development, iyo yakaderera-simba Synthesis uye yakakwirira-basa rekusimudzira kweHPMC ichave inotarisisa yekutsvaga ramangwana rekutsvaga.

 

HydroxyPropyl methylcellose yave chinhu chakakosha uye chakakosha zvinyorwa muindasitiri yemazuva ano uye nezuva nezuva hupenyu nekuita kwayo kwekuita uye kuwanda.

 


Kutumira Nguva: Jan-18-2025
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