Nhoroondo Yekugadzira uye Tsvagiridzo yeCellulose Ethers

Cellulose ethers ine nhoroondo refu yekugadzira uye tsvagiridzo, inotangira kumashure kwekupera kwezana ramakore re19. Yekutanga cellulose ether, ethyl cellulose, yakagadzirwa muma1860s neBritish chemist Alexander Parkes. Mukutanga 1900s, imwe cellulose ether, methyl cellulose, yakagadziridzwa neGerman chemist Arthur Eichengrün.

Munguva yezana ramakore rechi20, kugadzirwa uye kutsvagisa kwema cellulose ether kwakawedzera zvakanyanya. Mumakore ekuma1920, carboxymethyl cellulose (CMC) yakagadzirwa semvura-inonyungudika cellulose ether. Izvi zvakateverwa nekuvandudzwa kwehydroxyethyl cellulose (HEC) muma1930s, uye hydroxypropyl methyl cellulose (HPMC) muma1950s. Aya cellulose ethers anoshandiswa zvakanyanya nhasi mumaindasitiri akasiyana, anosanganisira ezvekudya, emishonga, zvekuzora, uye kuvaka.

Muindasitiri yezvekudya, cellulose ethers inoshandiswa seyakakora, emulsifiers, uye stabilizers. Zvinowanzo shandiswa muzvigadzirwa zvakadai semasaladhi ekupfeka, ice cream, uye zvinhu zvakabikwa. Muindasitiri yemishonga, cellulose ethers inoshandiswa semabinder, disintegrants, uye maajenti ekuputira mumapiritsi nemakapisi. Muindasitiri yezvizorwa, anoshandiswa seanokora uye emulsifiers mumakirimu uye lotions. Muindastiri yekuvaka, cellulose ethers inoshandiswa semvura-yekuchengetedza maajenti uye ekuwedzera kushanda musimende nedhaka.

Tsvagiridzo mu cellulose ethers inoenderera nanhasi, iine tarisiro yekugadzira mitsva uye yakagadziridzwa cellulose ether ine inowedzerwa zvivakwa uye kushanda. Kufambira mberi mune tekinoroji kwakatungamira kukudziridzwa kwenzira nyowani dzekugadzira cellulose ethers, senge enzymatic modification uye kugadzirwa kwemakemikari uchishandisa green solvents. Iko kuenderera mberi kwekutsvagisa uye kusimudzira kwe cellulose ethers inotarisirwa kutungamira kune mitsva yekushandisa uye misika yezvinhu izvi zvakasiyana-siyana mumakore anotevera.