He aha ka hydroxyethylcellulose i loaʻa mai

ʻO ka Hydroxyethylcellulose (HEC) he polymer i hoʻohana nui ʻia i nā ʻoihana like ʻole, me nā mea hoʻonaninani, nā lāʻau lapaʻau, a me nā meaʻai. He mea ia i hoʻololi ʻia i ka cellulose derivative i loaʻa mua mai ka cellulose maoli, he polysaccharide i loaʻa i loko o nā paia o nā mea kanu. Hoʻopili ʻia kēia pūhui maʻamau ma o ke kaʻina hana hoʻololi kemika e pili ana i ka hana ʻana i ka cellulose me ka ethylene oxide e hoʻokomo i nā pūʻulu hydroxyethyl ma ka iwi kuamoʻo. Loaʻa i ka hydroxyethylcellulose nā waiwai rheological kūʻokoʻa, e waiwai ana ia i nā ʻano noi.

ʻO ka cellulose, ka mea kumu mua no ka hydroxyethylcellulose, he nui i ke ʻano a hiki ke loaʻa mai nā kumu kanu like ʻole. ʻO nā kumu maʻamau o ka cellulose ka pulp lāʻau, ka pulupulu, ka hemp, a me nā mea kanu fibrous ʻē aʻe. ʻO ka unuhi ʻana o ka cellulose ka mea maʻamau i ka wāwahi ʻana i ka mea kanu ma o nā kaʻina hana mechanical a i ʻole kemika e hoʻokaʻawale i nā fiber cellulose. Ke hoʻokaʻawale ʻia, e hana hou ʻia ka cellulose e wehe i nā haumia a hoʻomākaukau iā ia no ka hoʻololi kemika.

ʻO ka synthesis o ka hydroxyethylcellulose e pili ana i ka hopena o ka cellulose me ka ethylene oxide ma lalo o nā kūlana hoʻomalu. ʻO ka Ethylene oxide he mea hoʻohui kino me ke ʻano kemika C2H4O, i hoʻohana mau ʻia i ka hana ʻana i nā ʻano mea ʻenehana like ʻole. Ke hoʻopili ʻia me ka cellulose, hoʻohui ka ethylene oxide i nā pūʻulu hydroxyethyl (-OHCH2CH2) i ka iwi kuamoʻo cellulose, ka hopena i ka hoʻokumu ʻana o hydroxyethylcellulose. Hiki ke hoʻomalu ʻia ka pae o ka hoʻololi ʻana, e pili ana i ka helu o nā pūʻulu hydroxyethyl i hoʻohui ʻia i kēlā me kēia ʻāpana glucose i ke kaulahao cellulose, i ka wā o ka hana synthesis e hoʻoponopono i nā waiwai o ka huahana hope.

ʻO ka hoʻololi kemika o cellulose e hana i ka hydroxyethylcellulose e hāʻawi i kekahi mau waiwai pono i ka polymer. Aia kēia mau waiwai i ka hoʻonui ʻana i ka wai, ka hoʻomaikaʻi ʻana i ka mānoanoa a me ka hiki ke gelling, hoʻonui i ka paʻa ma luna o kahi ākea o ka pH a me nā kūlana wela, a me ka launa pū me nā ʻano mea ʻē aʻe i hoʻohana mau ʻia i nā formulations. Hana kēia mau hiʻohiʻona i ka hydroxyethylcellulose i mea hoʻohui like ʻole me nā noi he nui ma nā ʻoihana like ʻole.

I ka ʻoihana hoʻonaninani, hoʻohana nui ʻia ka hydroxyethylcellulose ma ke ʻano he mea mānoanoa, stabilizer, a me emulsifier i nā huahana mālama pilikino like ʻole e like me nā shampoos, conditioners, lotions, creams, a me nā gels. ʻO kona hiki ke hoʻololi i ka viscosity a me ke ʻano o nā formulations hiki ke hana i nā huahana me nā hiʻohiʻona sensory makemake a me nā ʻano hana. Eia hou, hiki i ka hydroxyethylcellulose ke hana ma ke ʻano he mea hana kiʻiʻoniʻoni, hāʻawi i kahi pale pale ma ka ʻili a i ʻole ka lauoho.

I loko o nā ʻano lāʻau lapaʻau, hoʻohana ʻia ka hydroxyethylcellulose ma ke ʻano he mea hoʻopaʻa i ka hana papa, kahi e kōkua ai i ka hoʻopaʻa ʻana i nā mea hana a hoʻomaikaʻi i ka ikaika mechanical o nā papa. Hoʻohana ʻia ʻo ia ma ke ʻano he mea hoʻokuʻu i nā ʻano wai e pale ai i ka hoʻopaʻa ʻana o nā ʻāpana paʻa a hōʻoia i ka hāʻawi like ʻana o nā mea hana. Eia kekahi, lawelawe ʻo hydroxyethylcellulose ma ke ʻano he viscosity modifier i nā ophthalmic solutions a me nā gels topical, e hoʻonui ana i kā lākou mau mea lubricating a hoʻolōʻihi i ko lākou manawa noho ma ka ʻili ocular a i ʻole ka ʻili.

I ka ʻoihana meaʻai, loaʻa ka hydroxyethylcellulose i nā noi ma ke ʻano he mānoanoa, stabilizer, a me gelling agent i nā ʻano meaʻai like ʻole, me nā kīʻaha, nā lole, nā mea ʻono, a me nā mea inu. Hiki iā ia ke hoʻomaikaʻi i ke ʻano, ka waha, a me ka paʻa o ka papa o nā meaʻai me ka ʻole e pili i ko lākou ʻono a ʻala paha. ʻIke ʻia ʻo Hydroxyethylcellulose he palekana (GRAS) no ka hoʻohana ʻana i ka meaʻai e nā luna hoʻoponopono e like me ka US Food and Drug Administration (FDA) a me ka European Food Safety Authority (EFSA).

ʻO ka hydroxyethylcellulose kahi waiwai cellulose derivative i loaʻa mai nā kumu cellulose maoli ma o ka hoʻololi kemika me ka ethylene oxide. ʻO kāna mau waiwai rheological kūʻokoʻa e lilo ia i mea hoʻohui nui i nā mea hoʻonaninani, nā lāʻau lapaʻau, a me nā huahana meaʻai, kahi e hana ai ma ke ʻano he mānoanoa, stabilizer, binder, emulsifier, a me gelling agent. Me ka laulā o nā noi a me ka ʻike palekana maikaʻi, hoʻomau ka hydroxyethylcellulose i mea koʻikoʻi i nā ʻano mea kūʻai aku a me nā ʻoihana ʻenehana.