Eteri za selulosi n'uburyo bwo gukora kimwe

Umusaruro waeteri za seluloseikubiyemo impinduka nyinshi za shimi kuri selulosi, bigatuma habaho ibikomoka kuri selulosi bifite imiterere yihariye. Ibi bikurikira ni incamake rusange y'uburyo bukoreshwa mu gukora eteri za selulosi:

1. Guhitamo aho Selilulosi Ituruka:

• Eteri za selulosi zishobora guturuka ku masoko atandukanye nka pulp y'ibiti, linters z'ipamba, cyangwa ibindi bikoresho bikomoka ku bimera. Guhitamo isoko ya selulosi bishobora kugira ingaruka ku miterere y'umusaruro wa nyuma wa eteri ya selulosi.

2. Gutera ibinure:

• Isoko ya selulosi inyura mu gusya kugira ngo imigozi igabanuke neza. Gusya bishobora kugerwaho binyuze mu buryo bwa mekanike, imiti, cyangwa uruvange rw'uburyo bwombi.

3. Gusukura:

• Selulosi ikozwe muri pulped ikorerwa isuku kugira ngo ikureho imyanda, lignin, n'ibindi bice bitari cellulosic. Isuku ni ingenzi kugira ngo haboneke ibikoresho bya selulosi byiza.

4. Gukora kwa Selulose:

• Selulosi isukuye ikoreshwa no kuyibyimba mu gisubizo cya alkaline. Iyi ntambwe ni ingenzi cyane kugira ngo selulosi irusheho gukora neza mu gihe cy'ihinduka rya etherification.

5. Uburyo bwo guhindura imiterere y'amaraso mu buryo bwa etherization:

• Selulosi ikora ihinduka etherification, aho amatsinda ya ether yinjizwa mu matsinda ya hydroxyl ari ku muyoboro wa polymer wa selulosi. Ibintu bisanzwe bitera etherification birimo ethylene oxide, propylene oxide, sodium chloroacetate, methyl chloride, n'ibindi.
• Ubusanzwe iyi reaction ikorwa mu gihe ubushyuhe, igitutu, na pH bigenzurwa kugira ngo hagerwe ku rugero rwifuzwa rwo gusimbuza (DS) no kwirinda ingaruka mbi.

6. Kugabanya no gukaraba:

• Nyuma yo gushya, icyo gicuruzwa gikunze gukurwaho kugira ngo gikureho ibintu bidafite akamaro cyangwa ibindi bikomokaho. Intambwe zo gukaraba nyuma zikorwa kugira ngo haveho imiti n'imyanda bisigaye.

7. Kumisha:

• Selulosi isukuye kandi ikozwe mu buryo bwa eteri yumishwa kugira ngo haboneke umusaruro wa nyuma wa selulosi mu buryo bw'ifu cyangwa granular.

8. Igenzura ry'Ubuziranenge:

• Uburyo butandukanye bwo gusesengura, harimo spectroscopy ya nuclei magnetic resonance (NMR), spectroscopy ya infrared ya Fourier-transform (FTIR), na chromatography, bukoreshwa mu kugenzura ubuziranenge. DS ikurikiranwa hafi kugira ngo irebe ko ihoraho.

9. Uburyo bwo gutegura no gushyira mu bikorwa:

• Hanyuma, eteri ya selulosi ikorwa mu byiciro bitandukanye kugira ngo ihuze n'ibisabwa mu bikorwa bitandukanye. Eteri za selulosi zitandukanye zikwiriye inganda zitandukanye, nko mu bwubatsi, mu by'imiti, mu biribwa, mu byo gusiga, n'ibindi.

Ni ngombwa kumenya ko uburyo n'imiterere byihariye bishobora gutandukana bitewe n'umusaruro wa eteri ya selulosi wifuza n'ikoreshwa ryawo. Abakora akenshi bakoresha uburyo bwihariye kugira ngo bakore eteri za selulosi zifite imiterere yihariye ijyanye n'ibyo inganda zitandukanye zikeneye.