ʻO ka hālāwai ma waena o ka hydroxyethyl cellulose a me nā uhi wai

He aha ka Hydroxyethyl Cellulose?
ʻO Hydroxyethyl cellulose (HEC), he melemele keʻokeʻo a māmā paha, ʻaʻohe ʻala, ʻaʻohe mea ʻawaʻawa a i ʻole ka pauka paʻa, i hoʻomākaukau ʻia e ka hopena etherification o ka cellulose alkaline a me ka ethylene oxide (a i ʻole chlorohydrin), nona nā Nonionic soluble cellulose ethers. No ka mea he mau waiwai maikaʻi ʻo HEC o ka mānoanoa, hoʻokuʻu, hoʻopuehu, emulsifying, hoʻopaʻa ʻana, hana kiʻiʻoniʻoni, pale i ka wai a me ka hāʻawi ʻana i ka colloid pale, ua hoʻohana nui ʻia i ka ʻimi ʻaila, nā uhi, ke kūkulu ʻana, ka lāʻau lapaʻau, ka meaʻai, textile, papermaking a me polymer Polymerization a me nā kula ʻē aʻe.

Hoʻohana nui ʻia ka Hydroxyethyl cellulose i ka ʻoihana uhi, e nānā kākou i ke ʻano o ka hana ʻana i nā uhi:

He aha ka hopena ke hui ka hydroxyethyl cellulose i ka pena wai?

Ma ke ʻano he surfactant non-ionic, ʻo ka hydroxyethyl cellulose nā waiwai e pili ana i ka mānoanoa, hoʻopaneʻe, hoʻopaʻa ʻia, lana, hana kiʻiʻoniʻoni, hoʻopuehu, mālama wai a hāʻawi i ka colloid pale:

Hiki ke hoʻoheheʻe ʻia ka HEC i ka wai wela a i ʻole ka wai anuanu, ka wela kiʻekiʻe a i ʻole ka paila ʻana me ka ʻole o ka ua, i loaʻa iā ia ka nui o ka solubility a me nā ʻano viscosity, a me ka gelation non-thermal;

ʻOi aku ka nui o ka paʻa wai ma mua o ka methyl cellulose, a ʻoi aku ka maikaʻi o ka hoʻoponopono kahe ʻana;

ʻAʻole ionic a hiki ke noho pū me ka nui o nā polymers hiki ke hoʻoheheʻe ʻia i ka wai, surfactants, a me nā paʻakai. He mānoanoa colloidal maikaʻi loa ia no nā haʻina electrolyte kiʻekiʻe;

Ke hoʻohālikelike ʻia me ka methyl cellulose i ʻike ʻia a me ka hydroxypropyl methyl cellulose, ʻoi aku ka maikaʻi o ka hoʻopuehu ʻana o HEC, akā ʻoi aku ka ikaika o ka pale colloid.

No ka mea, ʻo ka hydroxyethyl cellulose i mālama ʻia i ka ʻili he pauda a i ʻole fibrous paʻa, pono e hahai ʻia kēia mau mea i ka wā e hoʻomākaukau ai i ka waiʻona makuahine hydroxyethyl cellulose:

(1) Ma mua a ma hope o ka hoʻohui ʻana i ka hydroxyethyl cellulose, pono e hoʻoulu mau ʻia a hiki i ka ʻike ʻana o ka hopena.
(2) Pono e kānana mālie ʻia i loko o ka pahu hui, a mai hoʻokomo i ka nui a i ʻole hoʻokomo pololei i ka hydroxyethyl cellulose i loko o ka pahu hui.
(3) He pilina koʻikoʻi ko ka wela o ka wai a me ka waiwai PH i ka wai me ka hoʻoheheʻe ʻana o ka hydroxyethyl cellulose, no laila pono e uku ʻia.
(4) Mai hoʻohui i kekahi mau mea alkaline i ka hui ʻana ma mua o ka hoʻopiha ʻia ʻana o ka pauka hydroxyethyl cellulose me ka wai. ʻO ka hoʻonui ʻana i ka pH ma hope o ka pulu ʻana e kōkua i ka hoʻoheheʻe.
(5) E like me ka hiki, e hoʻohui i ka antifungal agent ma mua.
(6) I ka hoʻohana ʻana i ka hydroxyethyl cellulose kiʻekiʻe-viscosity, ʻaʻole pono ke kiʻekiʻe o ka waiʻona makuahine ma mua o 2.5-3% (ma ke kaupaona), inā ʻaʻole e paʻakikī ka inu ʻana o ka makuahine.