Misali na Cellulose ether

Cellulose etherMisali wani sinadari ne na polymer da aka yi da cellulose tare da tsarin ether. Kowace zoben glucose a cikin macromolecule na cellulose ya ƙunshi ƙungiyoyin hydroxyl guda uku, babban rukunin hydroxyl akan atom na carbon na shida, da kuma ƙungiyar hydroxyl ta biyu akan atom na carbon na biyu da na uku. Ana maye gurbin hydrogen a cikin rukunin hydroxyl da ƙungiyar hydrocarbon don samar da cellulose. Sakamakon maye gurbin hydroxyl hydrogen da ƙungiyar hydrocarbon a cikin polymer na cellulose ne. Cellulose wani sinadari ne na polyhydroxy polymer wanda baya narkewa ko narkewa. Ana iya narkar da cellulose a cikin ruwa, a narkar da maganin alkali da kuma sinadarin sinadarai na halitta bayan etherification, kuma yana da kaddarorin thermoplastic.

Cellulose ether kalma ce ta gabaɗaya ta jerin samfuran da aka samar ta hanyar amsawar alkali cellulose da wakilin etherifying a ƙarƙashin wasu yanayi. Ana maye gurbin Alkali cellulose da wasu sinadarai masu etherifying don samun nau'ikan cellulose ethers daban-daban.

Dangane da halayen ionization na abubuwan maye, misalin cellulose ethers za a iya raba su zuwa ionic (kamar carboxymethyl cellulose) da non-ionic (kamar methyl cellulose) zuwa rukuni biyu.

Dangane da nau'in madadin,ƙwayoyin celluloseMisali za a iya raba su zuwa ether guda ɗaya (kamar methyl cellulose) da ether gauraye (kamar hydroxypropyl methyl cellulose). Dangane da narkewa, ana iya raba su zuwa ruwa mai narkewa (kamar hydroxyethyl cellulose) da kuma ruwa mai narkewa na halitta (kamar ethyl cellulose). Turmi mai gauraye da busasshe galibi yana amfani da cellulose mai narkewa na ruwa, wanda za a iya raba shi zuwa nau'in narkewa mai sauri da kuma nau'in narkewa mai jinkiri bayan an yi amfani da shi a saman.

Sinadaran suna taka muhimmiyar rawa wajen inganta halayen turmi mai gauraye da busasshe kuma suna da sama da kashi 40% na farashin kayan da ake amfani da su a turmi mai gauraye da busasshe. Masana'antun ƙasashen waje ne ke samar da wani babban ɓangare na sinadarin a cikin kasuwar cikin gida, kuma masu samar da kayayyaki suma suna samar da ma'aunin da ake buƙata na samfurin. Sakamakon haka, farashin kayayyakin turmi mai gauraye da busasshe har yanzu yana da yawa, kuma yana da wuya a yaɗa turmi mai gauraye da busasshen foda na yau da kullun tare da adadi mai yawa da faɗin yanki. Kamfanonin ƙasashen waje ne ke sarrafa samfuran kasuwa masu tsada, masana'antun turmi mai busasshe suna da ƙarancin riba, ƙarancin araha mai rahusa; Amfani da sinadarin ba shi da bincike mai tsari da manufa, yana bin tsarin ƙasashen waje a hankali.

Maganin riƙe ruwa shine babban abin da ake haɗawa don inganta aikin riƙe ruwa na busasshen turmi gauraye, kuma ɗayan mahimman abubuwan haɗin don tantance farashin kayan turmi gauraye busasshe. Babban aikin cellulose ether shine riƙe ruwa.

Tsarin aikin cellulose ether a cikin turmi shine kamar haka:

(1) turmi a cikin cellulose ether da aka narkar a cikin ruwa, saboda aikin saman yana tabbatar da cewa kayan gelled ya kasance iri ɗaya a cikin tsarin, da kuma cellulose ether a matsayin nau'in colloid mai kariya, "fakitin" ƙwayoyin ƙarfi, kuma a saman waje don samar da wani Layer na fim ɗin shafawa, tsarin slurry ya fi karko, kuma yana inganta slurry a cikin tsarin haɗa ruwa da gina zamewar na iya zama daidai.

(2)Cellulose ethermaganin saboda yanayin tsarin kwayoyin halittarsa, don haka ruwan da ke cikin turmi ba shi da sauƙin rasawa, kuma a hankali yana sake shi cikin dogon lokaci, yana ba turmi kyakkyawan riƙe ruwa da kuma iya aiki.