Ka mānoanoa o ka hydroxyethyl cellulose

ʻO ka Hydroxyethyl cellulose (HEC) kahi polymer nonionic, wai-soluble i hoʻohana nui ʻia ma ke ʻano he mea hoʻomānoanoa, mea hoʻopaʻa, a me ka mea hoʻopaʻa i nā ʻano ʻoihana like ʻole, me nā lāʻau lapaʻau, nā mea hoʻonani, a me ke kūkulu ʻana. He kuleana koʻikoʻi kona mānoanoa i ka hoʻoholo ʻana i kāna hana ma ia mau noi.

Hoʻoholo ʻia ka mānoanoa o HEC e kekahi mau kumu, me kona kekelē o ka pani ʻana (DS), ke kaumaha molekala, ka nui, a me ka pH. ʻO ke kekelē o ka pani ʻana e pili ana i ka helu o nā hui hydroxyethyl i hoʻohui ʻia i ka mole cellulose, ʻoiai ʻo ke kaumaha molekala e pili ana i ka nui o nā kaulahao polymer. Hoʻopilikia pū ka nui o HEC i loko o ka hopena i kona mānoanoa, me nā kiʻekiʻe kiʻekiʻe e hopena i nā viscosities kiʻekiʻe. Hiki i ka pH o ka hopena ke loaʻa ka hopena i ka viscosity, me nā waiwai pH kiʻekiʻe e hopena pinepine ana i nā viscosities haʻahaʻa.

Hiki ke ana ʻia ka mānoanoa o HEC me ka hoʻohana ʻana i kahi viscometer, kahi e ana ai i ke kūʻē ʻana o kahi wai i ke kahe. Hiki ke hoʻohana ʻia nā ʻano viscometer like ʻole, me nā viscometer rotational a me nā viscometer capillary, ma muli o ka noi kikoʻī a me ka laulā viscosity o ka hoihoi.

Ma keʻano laulā, makemake ʻia ka HEC viscosity kiʻekiʻe i nā noi kahi e koʻikoʻi ai ka mānoanoa a me ka hoʻopaʻa ʻana, e like me nā ʻano lāʻau lapaʻau, nā mea hoʻonani, a me nā huahana mālama pilikino. No ka laʻana, hoʻohana pinepine ʻia ka HEC viscosity kiʻekiʻe i nā shampoos a me nā conditioners e hoʻomaikaʻi i ko lākou ʻano a me ka hana, a me nā kirīmi a me nā lotions e hāʻawi i kahi manaʻo laumania a hanohano.

I loko o ka ʻoihana kūkulu hale, hoʻohana ʻia ʻo HEC ma ke ʻano he mea hoʻomānoanoa a me ka mea paʻa wai i nā huahana sima, e like me nā mortars, grouts, a me ka sima. He mea nui ka mānoanoa o HEC i kēia mau noi no ka hoʻokō ʻana i ka hana i makemake ʻia, ka hoʻopili ʻana, a me ke kūlike o ka huahana hope loa.

Hiki ke hoʻololi ʻia ka mānoanoa o HEC ma o nā ʻano kemika a me ke kino like ʻole, me ke crosslinking, ka hydrolysis waikawa, a me ka hui pū ʻana me nā polymers ʻē aʻe. Hiki i kēia mau hoʻololi ke hoʻololi i nā waiwai o HEC a hopena i ka hana i hoʻonui ʻia i nā noi kikoʻī.

I ka hōʻuluʻulu manaʻo, ʻo ka mānoanoa o HEC kahi mea nui i ka hoʻoholo ʻana i kāna hana ma nā ʻano noi like ʻole. ʻO ke kekelē o ka hoʻololi ʻana, ke kaumaha molekala, ka noʻonoʻo ʻana, a me ka pH e pāʻani i kahi kuleana i ka hoʻoholo ʻana i kona mānoanoa, hiki ke ana ʻia me ka hoʻohana ʻana i ka viscometer. Pono paha nā ʻoihana like ʻole a me nā noi i nā pae like ʻole o ka mānoanoa, a hiki ke hana i nā hoʻololi iā HEC e hoʻomaikaʻi i kāna hana ma nā noi kikoʻī.