Maitiro Ekuita Cellulose Ether?

Kugadzirwa kweCellulose anaTile inoshandura nemamisangano nemakungwa mamiriro ekunze, kazhinji anowanikwa kubva kune huni prip kana machira, kuburikidza neyekutevedzana kwemakemikari maitiro. Mhando dzakajairika dze cellulose ethyl sanganisira methyl cellelose (hydroxythuyl cellulose (HPMC), CarboxyMethyl Cellulose (CMC), uye vamwe. Maitiro chaiwo anogona kusiyana zvichienderana neiyo chaiyo cellulose ether achigadzirwa, asi matanho emagariro akafanana. Hechino Chakarerutswa Kuongorora:

Matanho emagariro ekugadzira cellulose anaitari:

1. Cellulose Source:

• Chinyorwa chekutanga ndechekutanga cellulose, kazhinji inowanikwa kubva kune huni protp kana machira. Iyo cellulose inowanzoita muchimiro chekucheneswa cellulose pulp.

2. Alkalization:

• Iyo cellulose inobatwa neAlkaline Solution, yakadai seSodium Hydroxide (Naoh), kuti uite kuti mapoka ehydroxyl pane cellulose ketani. Iyi nhanho yeAlkalization yakakosha kune rumwe rutivi rwakaenderera.

3. Kuwedzera:

• Iyo alkalized cellulose inoiswa pasi pekutsva, uko mapoka akasiyana-siyana ezasi anounzwa kuCellulose Backbone. Iyo chaiyo mhando yeboka re ether yakaunzwa (methyl, hydroxypropropyl, carboxyprichyl, etc.c.
• Maitiro ekutsvaga anosanganisira kuita kwemheremellose ane reagents akakodzera, senge:
  • For methyl cellulose (mc): kurapwa ne dimethyl sulfate kana methyl chloride.
  • Kune hydroxythethyl cellulose (Hec): kurapwa neEndylene oxide.
  • Kune hydroxyprupyl methyl cellelose (HPMC): kurapwa neProfylene oxide uye methyl chloride.
  • For carboxymethyl cellerose (cmc): kurapwa nesodium chloroacetate.

4. Kusaruramisa nekugeza:

• Mushure mekutsausa, iyo inokonzeresa cellulose inobviswa kazhinji haina kurongeka kubvisa chero yakasara alkali. Chigadzirwa chinobva chakashambwa kubvisa kusvibiswa uye ne-zvigadzirwa.

5. Kuomesa uye kugaya:

• Iyo cellulose ether yakaomeswa kubvisa yakawandisa kunyorova uye yakabva yanyungudika mune yakanaka hupfu. Saizi yehukuru inogona kudzorwa zvichienderana nechinangwa chekushandisa.

6. Hunhu Control:

• Iyo yekupedzisira cellulose etera chigadzirwa pasi pehunhu hwekutonga kwemhando yekudzora kuti ive nechokwadi chekuti inosangana nezvakangoitika, zvinosanganisira viscosity, zvinyoro-zvemukati, zvimiro zvekugoverwa, uye zvimwe zvinhu zvakakodzera.

Izvo zvakakosha kuti uzive kuti kugadzirwa kwe cellulose ana vana kunoitwa nevakagadza vagadziri vachishandisa maitiro ekudzora. Iwo mamiriro ezvinhu, reagents, uye zvishandiso zvinoshandiswa zvinogona kusiyana zvichienderana nezvinhu zvaunoda zve cellulose ether uye chishandiso chakanangwa. Pamusoro pezvo, matanho ekuchengetedza anokosha panguva yemakemikari maitiro maitiro.