ʻO ka cellulose ether kahi polymer synthetic i hana ʻia mai ka cellulose kūlohelohe ma o ka hoʻololi kemika.ʻO ka cellulose ether kahi mea i loaʻa i ka cellulose maoli.ʻOkoʻa ka hana ʻana o ka cellulose ether mai nā polymers synthetic.ʻO kāna mea kumu nui he cellulose, kahi hui polymer maoli.Ma muli o ke ʻano o ke ʻano o ka cellulose kūlohelohe, ʻaʻohe hiki i ka cellulose pono ke hana me nā mea etherification.Eia nō naʻe, ma hope o ka hoʻomaʻamaʻa ʻana i ka mea pehu, ua luku ʻia nā paʻa hydrogen ikaika ma waena o nā kaulahao mole a me nā kaulahao, a lilo ka hoʻokuʻu ikaika o ka hui hydroxyl i cellulose alkali reactive.E kiʻi i ka cellulose ether.
ʻO nā waiwai o ka cellulose ethers e pili ana i ke ʻano, ka helu a me ka hāʻawi ʻana o nā mea pani.Hoʻokumu pū ʻia ka hoʻokaʻawale ʻana o nā cellulose ethers ma ke ʻano o nā substituents, degere o ka etherification, solubility a me nā waiwai noi pili.E like me ke ʻano o nā substituent ma ke kaulahao mole, hiki ke hoʻokaʻawale ʻia i ka monoether a me ka ether hui.Hoʻohana maʻamau mākou i ka mc e like me ka monoether, a me ka HPmc me ka ether hui ʻia.ʻO ka Methyl cellulose ether mc ka huahana ma hope o ka hui hydroxyl ma ka ʻāpana glucose o ka cellulose maoli i hoʻololi ʻia e ka hui methoxy.He huahana ia i loaʻa ma ka hoʻololi ʻana i kahi ʻāpana o ka pūʻulu hydroxyl ma ka hui me kahi pūʻulu methoxy a me kahi ʻāpana me kahi pūʻulu hydroxypropyl.ʻO ke kumu hoʻolālā ʻo [C6H7O2(OH)3-mn(OCH3)m[OCH2CH(OH)CH3]n]x Hydroxyethyl methyl cellulose ether HEmc, ʻo ia nā ʻano nui i hoʻohana nui ʻia a kūʻai ʻia ma ka mākeke.
Ma ke ʻano o ka solubility, hiki ke hoʻokaʻawale ʻia i ka ionic a me ka non-ionic.ʻO nā etera cellulose non-ionic hiki ke hoʻoheheʻe ʻia i ka wai ka mea nui i hoʻokumu ʻia i ʻelua pūʻulu o nā alkyl ethers a me hydroxyalkyl ethers.Hoʻohana nui ʻia ʻo Ionic Cmc i nā mea hoʻomaʻemaʻe synthetic, paʻi lole a me ke kala, ʻimi ʻai a me ka ʻaila.ʻO ka non-ionic mc, HPmc, HEmc, a me nā mea'ē aʻe i hoʻohana nuiʻia i nā mea hana, nā pale latex, nā lāʻau lapaʻau, nā kinikini o kēlā me kēia lā, a me nā mea'ē aʻe.
Ka manawa hoʻouna: Nov-24-2022