Usoro maka imepụta methyl cellulose ether

Imepụta nkemethyl cellulose etherna-agụnye mgbanwe kemịkalụ nke cellulose site na mmeghachi omume etherification. Methyl cellulose (MC) bụ cellulose ether nke na-agbaze mmiri nke a na-ejikarị eme ihe na ụlọ ọrụ dị iche iche. Nke a bụ nkọwa zuru ezu nke usoro maka imepụta methyl cellulose ether:

1. Nhọrọ nke isi iyi Cellulose:

• Usoro na-amalite site na nhọrọ nke isi iyi cellulose, nke a na-enwetakarị site na osisi pulp ma ọ bụ owu. A na-ahọrọ isi iyi cellulose dabere na njirimara achọrọ nke ngwaahịa methyl cellulose ikpeazụ.

2. Ntupu:

• Isi iyi cellulose ahọpụtara na-enweta pulping, usoro na-akụda eriri ndị ahụ ka ọ bụrụ ụdị a na-ejikwa. Enwere ike nweta pulping site na igwe ma ọ bụ usoro kemịkalụ.

3. Ịgbalite Cellulose ọrụ:

• A na-arụ ọrụ cellulose ahụ pulpped site n'ịgwọ ya na ngwọta alkaline. Nzọụkwụ a na-achọ ime ka eriri cellulose zaa, na-eme ka ha na-emeghachi omume n'oge mmeghachi omume etherification na-esote.

4. Mmeghachi omume Etherification:

• Cellulose na-arụ ọrụ na-enweta etherification, ebe ether dị iche iche, na nke a, otu methyl, na-ewebata ìgwè hydroxyl na cellulose polymer chain.
• Mmeghachi omume etherification na-agụnye iji methylating agents dị ka sodium hydroxide na methyl chloride ma ọ bụ dimethyl sulfate. A na-ejikwa nlezianya na-achịkwa ọnọdụ mmeghachi omume, gụnyere okpomọkụ, nrụgide, na oge mmeghachi omume iji nweta ogo ngbanwe achọrọ (DS).

5. Nnọpụiche na ịsa:

• Mgbe mmeghachi omume etherification gasịrị, a na-ewepụ ngwaahịa ahụ iji wepụ alkali dị ukwuu. A na-eme usoro ịsa ahụ na-esote iji kpochapụ kemịkalụ fọdụrụnụ na adịghị ọcha.

6. ihicha:

• A na-akpọnwụ cellulose dị ọcha na methylated iji nweta ngwaahịa methyl cellulose ether ikpeazụ n'ụdị ntụ ntụ ma ọ bụ granules.

7. Njikwa ogo:

• A na-eji usoro nyocha dị iche iche, gụnyere ihe nleba anya nke resonance nuklia (NMR), spectroscopy Fourier-transform infrared (FTIR), na chromatography, maka njikwa mma. Ogo nke nnọchi (DS) bụ oke dị oke mkpa a na-enyocha n'oge mmepụta.

8. Nhazi na nkwakọ ngwaahịa:

• A na-emepụtazi methyl cellulose ether ka ọ bụrụ akara ule dị iche iche iji mezuo ihe achọrọ nke ngwa dị iche iche. Ọkwa dị iche iche nwere ike ịdịgasị iche na viscosity ha, nha urughuru na ihe ndị ọzọ.
• A na-achịkọta ngwaahịa ikpeazụ maka nkesa.

Ọ dị mkpa iburu n'obi na ọnọdụ ndị akọwapụtara na reagents ejiri na mmeghachi omume etherification nwere ike ịdịgasị iche dabere na usoro nke onye nrụpụta yana njirimara achọrọ nke ngwaahịa methyl cellulose. Methyl cellulose na-achọta ngwa na ụlọ ọrụ nri, ọgwụ, ihe owuwu, na mpaghara ndị ọzọ n'ihi ike mmiri na-eme ka mmiri na-emepụta ihe.