He aha ka ethylcellulose?

ʻO ka Ethyl cellulose kahi polymer synthetic i loaʻa mai ka cellulose maoli, kahi ʻano hana maʻamau o nā paia o nā mea kanu. ʻO ka hana ʻana o ka ethyl cellulose e pili ana i ka hoʻololi kemika o ka cellulose maoli me ka hoʻohana ʻana i ka ethyl chloride a me kahi catalyst e hana i kahi ethyl ether derivative o cellulose.

Hoʻomaka ka hana me ka hoʻomaʻemaʻe ʻana i ka cellulose mai nā kumu mea kanu, e like me ka pulp lāʻau a i ʻole ka pulupulu. A laila hoʻoheheʻe ʻia ka cellulose i hoʻomaʻemaʻe ʻia i loko o kahi hui o nā mea hoʻoheheʻe, e like me ka ethanol a me ka wai, e hana i kahi hopena viscous. Hoʻohui ʻia ka Ethyl chloride i ka hopena, me kahi catalyst, e hoʻomaʻamaʻa i ka hopena ma waena o ka cellulose a me ka ethyl chloride.

I ka wā o ka hopena, hoʻololi ka molekala ethyl chloride i kekahi o nā pūʻulu hydroxyl ma ke kaulahao cellulose, e hopena i ka hana ʻana o ka ethyl cellulose. Hiki ke hoʻomalu ʻia ke degere o ka ethoxylation, a i ʻole ka helu o nā pūʻulu ethyl i hoʻopili ʻia i kēlā me kēia ʻāpana glucose i ke kaulahao cellulose, i ka wā o ka hopena e hana ai i ka ethyl cellulose me nā ʻano waiwai like ʻole a me nā ʻano solubility.

Ma hope o ka pau ʻana o ka hopena, hoʻomaʻemaʻe ʻia ka ethyl cellulose a hoʻomaloʻo ʻia e wehe i nā mea hoʻoheheʻe a me nā haumia. ʻO ka huahana hope he pauka keʻokeʻo a melemele paha i hiki ke hoʻoheheʻe ʻia i loko o kahi ākea o nā mea hoʻoheheʻe organik, akā hiki ʻole ke hoʻoheheʻe ʻia i ka wai.

ʻO ka holoʻokoʻa, ʻo ka ethyl cellulose kahi polymer synthetic i loaʻa mai ka cellulose kūlohelohe ma o ke kaʻina hana hoʻololi kemika e pili ana i ka hoʻohui ʻana o nā hui ethyl i ke kaulahao cellulose.