Wenza njani i-seluplose ether?

Ukuveliswa kwe-seluplose enina kubandakanya ukuguqula imichiza yokuguqula i-selupelose yemvelo, ithathiwe ivela kwi-Pulp okanye ikotoni, ngothotho lwemichiza. Ezona ntlobo zixhaphakileyo zeselsulose e-Sethes setyl seluplose (MC), i-Hydroxyythl seluplose (hec), iHpmsxypropy (HPMC), kunye nabanye. Inkqubo eyahlukileyo inokwahluka ngokusekwe kwi-selupelose ethile ye-ether eveliswayo, kodwa amanyathelo aqhelekileyo ayafana. Nantsi ixesha elilula:

Amanyathelo ngokubanzi okwenza iiselsese

1. Umthombo weSeluplose:

• Izinto zokuqala zeselsulose yendalo, zihlala zifunyanwa kwi-pulp okanye umqhaphu. I-selsulose iqhelekile ngendlela yendlela yokuphumelela i-sellulose.

I-2. I-alkalition:

• I-selupose inyangwa ngesisombululo se-alkaline, njengeSodium hydroxide (i-nah), ukwenza amaqela e-hydroxyl kwikhonkco leselselose. Le nyathelo le-alkali ibalulekile ekuqhubeni okungakumbi.

I-3. Isivumelwano:

• I-alkal selsulose iphantsi kwe-Ethersical, apho amaqela ahlukeneyo e-Ether azaziswa kwi-SellXose. Uhlobo oluthile lweqela le-ether Ingeniso (i-methyl, i-hydroxyythl, hydroxyEzyl, i-HydroxyEkl, i-Cargboxymethyl, njl. Njl.) Kuxhomekeke kwi-Selese enqwenelekayo.
• Inkqubo ye-etherheration ibandakanya impendulo ye-seluplose kunye ne-regents efanelekileyo, njenge:
  • Kwi-methyl seluplose (mc): unyango nge-dimthyl sulfate okanye i-methyl chloride.
  • Ye-hydroxythl seluplose (hec): Unyango ne-Ethylene oxide.
  • Ye-hydroxypropyl methyl seluplose (i-HPMC): unyango nge-propylene oxide kunye ne methyl chloride.
  • Kwi-carboxymethyl seluplose (cmc): unyango nge-sodium hlororocetate.

4. Ukungathathi cala kunye nokuhlamba:

• Emva kokuthumeza, ukukhokelela kwesiphumo seselseXaveatives uqhelekile ukususa nayiphi na i-Alkali eqhelekileyo. Imveliso ihlanjwe ukuze isuse ukungcola kunye neemveliso.

5. Ukomisa kunye nokugaya:

• I-Selese i-Ether iyomisiwe isusa umswakama ogqithisileyo kwaye igcinwe kumgubo ocolekileyo. Ubungakanani bentsundu bunokulawulwa ngokusekwe kwisicelo esicetywayo.

6. Ulawulo loMgangatho:

• Imveliso yokugqibela ye-Elesulose ye-Selsulose ijonga iimvavanyo zolawulo olusemgangathweni ukuqinisekisa ukuba ihlangabezana neenkcazo ezithile, kubandakanya i-viscofity, umxholo wokufuma, ubungakanani be-pariticle, kunye nezinye izinto ezifanelekileyo.

Kubalulekile ukuba uqaphele ukuba ukuveliswa kwe-Selessese e kanina kwenziwa ngabavelisi abakhethekileyo besebenzisa iinkqubo ezilawulwayo. Iimeko ezithile, iiRegentnts, kunye nezixhobo ezisetyenzisiweyo zinokwahluka ngokusekwe kwipropathi oyifunayo ye-etelulose ether kunye nesicelo esijongwayo. Ukongeza, amanyathelo okhuseleko kubalulekile ngexesha leenkqubo zekhemikhali.