Tsari don samar da methyl cellulose ether

A yi namethyl cellulose etherya ƙunshi gyare-gyaren sinadarai na cellulose ta hanyar halayen etherification. Methyl cellulose (MC) shine ether cellulose mai narkewa da ruwa wanda ake amfani dashi a cikin masana'antu daban-daban. Anan ga cikakken bayyani na tsari don kera methyl cellulose ether:

1. Zaɓin Tushen Cellulose:

• Tsarin yana farawa da zaɓin tushen cellulose, wanda aka saba samu daga ɓangaren itace ko auduga. An zaɓi tushen cellulose bisa ga halayen da ake so na samfurin methyl cellulose na ƙarshe.

2. Tuba:

• Zaɓaɓɓen tushen cellulose yana jurewa pulping, tsari wanda ke rushe zaruruwa zuwa mafi kyawun tsari. Ana iya samun buguwa ta hanyar inji ko hanyoyin sinadarai.

3. Kunna Cellulose:

• Sa'an nan kuma ana kunna cellulose da aka lakafta ta hanyar magance shi da maganin alkaline. Wannan matakin yana da nufin kumbura zaruruwan cellulose, yana mai da su karin amsawa yayin amsawar etherification na gaba.

4. Ra'ayin Etherification:

• Cellulose da aka kunna yana fuskantar etherification, inda ƙungiyoyin ether, a cikin wannan yanayin, ƙungiyoyin methyl, an gabatar da su ga ƙungiyoyin hydroxyl akan sarkar polymer cellulose.
• Halin etherification ya ƙunshi amfani da wakilai na methylating kamar sodium hydroxide da methyl chloride ko dimethyl sulfate. Yanayin amsawa, gami da zafin jiki, matsa lamba, da lokacin amsawa, ana sarrafa su a hankali don cimma matakin da ake so na maye gurbin (DS).

5. Tsatsaya da Wankewa:

• Bayan da etherification dauki, samfurin ne neutralized don cire wuce haddi alkali. Ana aiwatar da matakan wankewa na gaba don kawar da ragowar sinadarai da ƙazanta.

6. Bushewa:

• An bushe cellulose mai tsabta da methylated don samun samfurin ether na methyl cellulose na ƙarshe a cikin nau'i na foda ko granules.

7. Kula da inganci:

• Daban-daban na nazari, da suka haɗa da ƙarfin maganadisu na nukiliya (NMR) spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, da chromatography, ana amfani da su don sarrafa inganci. Matsayin maye gurbin (DS) muhimmin ma'auni ne da ake kulawa yayin samarwa.

8. Samfura da Marufi:

• Ana tsara ether na methyl cellulose zuwa maki daban-daban don saduwa da takamaiman buƙatun aikace-aikace daban-daban. Maki daban-daban na iya bambanta a cikin danko, girman barbashi, da sauran kaddarorinsu.
• Ana tattara samfuran ƙarshe don rarrabawa.

Yana da mahimmanci a lura cewa takamaiman yanayi da reagents da aka yi amfani da su a cikin amsawar etherification na iya bambanta dangane da hanyoyin mallakar masana'anta da kaddarorin da ake so na samfurin methyl cellulose. Methyl cellulose yana samun aikace-aikace a cikin masana'antar abinci, magunguna, gine-gine, da sauran sassa saboda ƙarancin ruwa da iya yin fim.