ʻO Hydroxyethyl Cellulose (HEC) kahi polymer wai-soluble non-ionic i hoʻohana nui ʻia i nā uhi, nā mea hoʻonani, nā lāʻau lapaʻau, ka meaʻai, ka hana pepa, ka ʻeli ʻaila a me nā ʻoihana ʻē aʻe. He hui cellulose ether i loaʻa ma o ka etherification o ka cellulose, kahi e pani ai ka hydroxyethyl i kahi ʻāpana o nā hui hydroxyl o ka cellulose. ʻO nā waiwai kino a me nā kemika o ka hydroxyethyl cellulose e hoʻolilo iā ia i hoʻokahi o nā ʻāpana koʻikoʻi o nā thickeners, gelling agents, emulsifiers a me stabilizers.
Ka pae paila o ka hydroxyethyl cellulose
He polymer molekala kiʻekiʻe ka Hydroxyethyl cellulose me ke kaumaha molekala nui, a ʻaʻole maʻalahi ka hoʻoholo ʻana i kona kiko paila kikoʻī e like me nā hui molekala liʻiliʻi. I nā hoʻohana pono ʻana, ʻaʻohe kiko paila maopopo o nā mea molekala kiʻekiʻe e like me ka hydroxyethyl cellulose. ʻO ke kumu, e palaho kēlā mau mea i ka wā e hoʻomehana ai, ma mua o ka hoʻololi pololei ʻana mai ka wai a i ke kinoea ma o ka hoʻololi ʻana o ka pae e like me nā mea molekala liʻiliʻi maʻamau. No laila, ʻaʻole pili ka manaʻo o "kiko paila" o ka hydroxyethyl cellulose.
Ma ke ʻano laulā, ke hoʻomehana ʻia ka hydroxyethyl cellulose i ka mahana kiʻekiʻe, e hoʻoheheʻe mua ia i loko o ka wai a i ʻole ka mea hoʻoheheʻe organik e hana i kahi hopena colloidal, a laila ma kahi mahana kiʻekiʻe, e hoʻomaka ka kaulahao polymer e haki a ma hope e palaho wela, e hoʻokuʻu ana i nā mole liʻiliʻi e like me ka wai, ke kalapona ʻokikene a me nā mea lele ʻē aʻe me ka ʻole o ka hana paila maʻamau. No laila, ʻaʻohe kiko paila maopopo o ka hydroxyethyl cellulose, akā he mahana palaho, kahi e loli ai me kona kaumaha molekala a me ke kekelē o ka pani ʻana. Ma ke ʻano laulā, ʻoi aku ka mahana palaho wela o ka hydroxyethyl cellulose ma mua o 200°C.
Ka paʻa wela o ka hydroxyethyl cellulose
Loaʻa i ka Hydroxyethyl cellulose ke kūpaʻa kemika maikaʻi i ka mahana o ka lumi, hiki ke kū i kahi ʻano o nā wahi waikawa a me ka alkali, a he kūpaʻa wela kekahi. Eia nō naʻe, i ka wā e kiʻekiʻe loa ai ka mahana, ʻoiai me ka ʻole o nā mea hoʻoheheʻe a i ʻole nā mea hoʻopaʻa ʻē aʻe, e hoʻomaka ana nā kaulahao polymer e haki ma muli o ka hana o ka wela. ʻAʻole hele pū kēia kaʻina hana hoʻoheheʻe wela me ka paila maopopo, akā, he haki mālie ke kaulahao a me ka hopena dehydration, e hoʻokuʻu ana i nā mea volatile a waiho hope i nā huahana carbonized.
I nā noi ʻoihana, i mea e pale aku ai i ka palaho i hoʻokumu ʻia e ka mahana kiʻekiʻe, ʻaʻole i hōʻike pinepine ʻia ka hydroxyethyl cellulose i kahi kaiapuni e ʻoi aku ka nui o kona mahana palaho. ʻOiai i nā noi mahana kiʻekiʻe (e like me ka hoʻohana ʻana i nā wai ʻeli ʻaila), hoʻohana pinepine ʻia ka hydroxyethyl cellulose me nā mea ʻē aʻe e hoʻonui i kona kūpaʻa wela.
Ka hoʻohana ʻana o ka hydroxyethyl cellulose
ʻOiai ʻaʻohe kiko paila maopopo o ka hydroxyethyl cellulose, ʻo kona solubility a me nā waiwai mānoanoa e hoʻohana nui ʻia ai i nā ʻoihana he nui. Eia kekahi laʻana:
ʻOihana uhi: hiki ke hoʻohana ʻia ka hydroxyethyl cellulose ma ke ʻano he thickener e kōkua i ka hoʻoponopono ʻana i ka rheology o ka uhi ʻana, pale i ka ua a hoʻomaikaʻi i ka pae ʻana a me ke kūpaʻa o ka uhi ʻana.
ʻO nā mea hoʻonaninani a me nā kemika o kēlā me kēia lā: He mea nui ia i nā detergents he nui, nā huahana mālama ʻili, nā shampoos a me nā niho, hiki ke hāʻawi i ka huahana i ka viscosity kūpono, moisturizing a me ke kūpaʻa.
ʻOihana lāʻau lapaʻau: I nā hoʻomākaukau lāʻau lapaʻau, hoʻohana pinepine ʻia ka hydroxyethyl cellulose i ka hana ʻana o nā papa hoʻokuʻu mau a me nā uhi e kāohi i ka helu hoʻokuʻu o nā lāʻau.
ʻOihana meaʻai: Ma ke ʻano he mea hoʻomānoanoa, mea hoʻopaʻa a me ka emulsifier, hoʻohana ʻia ka hydroxyethyl cellulose i ka meaʻai, ʻoi aku hoʻi i ka ice cream, jelly a me nā mea ʻono.
ʻEli ʻaila: I ka ʻeli ʻana i ke kahua ʻaila, ʻo ka hydroxyethyl cellulose kahi ʻāpana koʻikoʻi o ka wai wili, hiki ke hoʻonui i ka viscosity o ka wai, hoʻopaʻa i ka paia o ka luawai a hōʻemi i ka nalowale o ka lepo.
Ma ke ʻano he mea polymer, ʻaʻohe kiko paila maopopo o ka hydroxyethyl cellulose no ka mea e palaho ana ia i nā mahana kiʻekiʻe ma kahi o ka hanana paila maʻamau. ʻOi aku ka mahana o kona palaho wela ma mua o 200°C, ma muli o kona kaumaha molekala a me ke kekelē o ka pani ʻana. Eia nō naʻe, hoʻohana nui ʻia ka hydroxyethyl cellulose i nā uhi, nā mea hoʻonani, nā lāʻau lapaʻau, ka meaʻai a me ka petroleum ma muli o kona mau waiwai mānoanoa maikaʻi loa, gelling, emulsifying a me ka hoʻopaʻa ʻana. I loko o kēia mau noi, pale pinepine ʻia mai ka hōʻike ʻia ʻana i nā mahana kiʻekiʻe loa e hōʻoia i kāna hana a me ke kūpaʻa.
Ka manawa hoʻouna: ʻOkakopa-23-2024