Midka methyl bylulose (MC) oo laga sameeyay sheyga dabiiciga ah

Midka methyl (MC) waa mid soo jiidasho leh oo ka mid ah cellulose, oo ah polymder dabiici ah oo laga helo darbiyada unugyada ee dhirta. Cellulose waa mid ka mid ah xeryahooda ugu badan ee dabiiciga ah ee dhulka, sida ugu horeysa ee laga soo celiyo alwaax alwaax iyo suuftoobta. MC-da waxaa lagu dhex maray cholulose iyada oo loo marayo taxane fal-celin kiimikaad oo ku lug leh badalka hydroxyl kooxaha hydroxyl (-ka) ee molecule-ka cellulose ee methyl (-ch3).

In kasta oo MC lafteeda ay tahay xarun kiimiko ah oo wax laga beddelay, shey ceyriin ah, cellulose, ayaa laga soo qaatay ilo dabiici ah. Cellulose waxaa laga soo saari karaa agabyada kala duwan ee dhirta, oo ay ku jiraan alwaax, alwaax, hemp, iyo dhirta kale ee dillaaca. Cellulose wuxuu marayaa ka shaqeynta inuu ka saaro cilado oo loo beddelo foom la isticmaali karo oo loogu talagalay soo saarista MC.

Mar alla markii cellulose la helo, waxaa lagu dayaa in lagu soo saaro kooxaha methyl-ka gacanta laf-dhabarka laf-dhabarka, taasoo dhalisay samaynta unugyada methyl. Hawshani waxay ku lug leedahay daweynta cellulose ee isku-darka sodium hydroxide iyo methyl chloride ku hoos jira xaaladaha la xakameeyo.

Taasina waxay ka dhalatay unugyada methyl-ka ee methyl-ka waa mid cad oo ka baxsan-caddaan, ur la'aan, iyo budo aan dhadhan lahayn oo ku milmay biyo qabow oo sameeya xalka viscous. Waxaa si weyn loogu isticmaalaa warshadaha kala duwan, oo ay ku jiraan cuntada, dawooyinka, daryeelka shakhsi ahaaneed, iyo dhismaha, iyo qaro weyn, xasilinta, iyo guryaha dejinta.

In kasta oo MC ay tahay xarun kiimiko ah oo wax laga beddelay, waxaa laga soo qaatay cellulose dabiiciga ah, taasoo ka dhigeysa ikhtiyaar noole ah iyo ikhtiyaar u ah bay'ada codsiyo badan.