ʻO ka hydroxyethyl cellulose (hec) he polimu i hoʻohana nuiʻia ma nāʻoihana likeʻole ma muli o nā waiwai kūʻokoʻa e like me ka wai piha. ʻO ka hoʻomaopopoʻana i kona kūʻana ma lalo o nāʻano likeʻole o nā kumu ph likeʻole no kona noi kūpono.
ʻO Hydroxyethyl cellulouse (hec) he derivative o cellulose, he mea maoli ka mea i loaʻa i ka polymer i loaʻa i nā pā lāʻau. Ua loaʻa iā Hec He nui ka nānāʻana i nāʻoihana me he mea la pharmaceutication, nā mea kanu, ka uluʻana o ka wai, a me ka nui o ka wai, ka hana pono, a me ka biocomopitility. Eia nō naʻe,ʻo ke kūpaʻa o ka hec ma lalo o nāʻano likeʻole he nui no kāna noi kūleʻa i nāʻano likeʻole.
Hiki i ke kūpaʻa o ka hec hiki ke hāpaiʻia e kekahi mau mea, me ka ph i kekahi o nā'āpana koʻikoʻi nui loa. Ua loaʻaʻo Ph i ka kūlana o Iona o nā pūʻulu hana ma Hec, i laila e ho'ōke ana i kāna paahala, makamaka, a me nā waiwai'ē aʻe. ʻO ka hoʻomaopopoʻana i keʻano o keʻano o ka hec ma nā ph ph e like me nā kumuwaiwai e pili ana i nā hana e hoʻohālikelike ai i kāna hana i nā noi.
1.CHIMIMIMINA O KA LOHE KLDRRYYEYL CELLOUSE:
Ua hoʻohālikelikeʻiaʻo Hec ma o keʻano o ka cellouse me Etelenene Oxide, e hopena ana i ka hoʻomakaʻana o nā hui hydroese. ʻO ke kiʻekiʻe o kaʻenehana (DS) o nā hui HydroxyTHS e hoʻoholo ai i nā waiwai o Hec, me kāna hiki ke komo a me kāna hiki. ʻO keʻano o keʻano o ka hec e hāʻawi i nā hiʻohiʻona kūikawā i kūpono i nā mea e kūpono ai no nā noi likeʻole.
ʻO nā pūʻulu hana mua ma Hec he hydroxyl (-oh) a me ka ether ʻO ka heleʻana o nā mea i hoʻonuiʻia i nā godrroxythyl e hoʻonui i ka hydrophinicity o cellulous, e alakaʻi ana e hoʻomaikaʻi i ka nui o ka wai. Hāʻawi ka pilina o ka Eter i ka kūpaʻa i nā molena hec molena, pale i ko lākou degradation ma lalo o nā kūlana maʻamau.
2.Nenections me PH:
ʻO ke kūpaʻa o Hec i nā nuku o nā nuku o nā nunui e hoʻohālikelikeʻia e keʻano o kāna hui pūʻana. Ma nā kūlana Acidic (PH <7), nā hui Hydroxyl i hōʻikeʻia ma kahi o Hec ma lalo o ka pohō a me ke kiʻiʻana. E like me nā kūlana alkaline (ph> 7), ka detrolning o nā hui hydroxyl e hanana, e pili ana i nā waiwai o nā polymer.
Ma ka haʻahaʻa haʻahaʻa haʻahaʻa, hiki i nā hui o nā hui hydroxyl e hiki ke hoʻopau i ka hoʻopiliʻana i ka poldrogen i loko o ka paymer i loko o ka polmer a me ka pono o ka maʻi. Ua haʻiʻia kēia phenomenon i nā kiʻekiʻe kiʻekiʻe o keʻano, kahi e loaʻa ai kahi nui o nā hui hydroxyl no ka protonetation. Ma muli o kahi hopena,ʻo ka viscosity o nā hopena hec e emi loa i nā wahi Acidic, e pili ana i kāna hana ma keʻano he mea kākau.
Ma kaʻaoʻao'ē aʻe, i nā kūlana Alkaline, ke koiʻana i ka huiʻo Hydroxyl ke hoʻonui i ka palena o Hec ma kaʻano o Alkoxote Ion. Akā, hiki i ka nui o ka alkalin No laila,ʻo ka mālamaʻana i ka PH i loko o kahi pāʻoihana kūpono e pono ai e hōʻoia i ka hoʻomau o ka hec i nāʻano hec ma Alkaline Koho.
3.Mectical implications:
ʻO ke kūpaʻaʻana o Hec i nā wahi nui o nā ph i nā hopena maikaʻi loa no kona hoʻohanaʻana i nāʻoihana likeʻole. I loko o kaʻoihana lāʻau lapaʻau,ʻo Hec ua hana pinepineʻiaʻo hec i kahi o nā'ōiwi e like me nā mea e like me nā subpeons, a me nā gels. Pono e mālama ponoʻia ka pH o kēia mau hana i ka mālamaʻana i ka viscosity i makemakeʻia a me ka kūpaʻa o ka hec.
Pēlā nō, ma nāʻoihana cosmetics, ua hoʻohanaʻiaʻo hec i nā huahana e like me nā shampos, cream, a me kona mau wahi e like ai. Hiki i ka PH o kēia mauʻano hana e like me ka nui o nā pono huahana a me ka hoʻohuiʻana o ka hec me nā mea'ē aʻe. Pono e noʻonoʻo i nā kumuwaiwai i ka hopena o ka ph ma ka paʻa a me ka hana o ka hec e hōʻoia ai i ka leʻaleʻa maikaʻi.
I kaʻoihana meaʻai, ua hoʻohanaʻiaʻo hec ma keʻano he nui o ka skickenizing a hoʻopaʻaʻia i nā huahana likeʻole, me nā kīʻaha, nā lole. Hiki i ka PH o nā hana meaʻai e hiki ai i ka acidic i ka alkaline, e pili ana i nā mea kanu a me nā kūlana hana. ʻO ka hoʻomaopopoʻana i keʻano o ka hec i nā ph ph e pono ai no ka hoʻokōʻana i nā kiʻina i makemakeʻia, waha, a me ka kūpaʻa i nā huahana meaʻai.
I loko o kaʻoihana kūkulu, ua hanaʻiaʻo Hec i nā noi e like me ka poʻe noho kīwaha, nā lāʻau no keʻano o kāna mau lako wai. Hiki i ka PH o kēia mau hana e like me nā mea e like me nā kūlana e like me nā kūlana curing a me ke alo o nā hoʻohui. Ke hoʻohālikelike nei i ka ph stability of hec he mea nui no ka hōʻoiaʻana i ka hana a me ka neʻeʻana o nā mea kūkulu kūkuluʻana.
Ke kūpaʻa o ka celdroxythiyl cellulouse ʻO ka hoʻomaopopoʻana i keʻano o ka hec ma lalo o nāʻano likeʻole e pono ai nā mea e pono ai no nā hana e hoʻomaikaʻi i kāna hana i nā noi. Pono hou ka noiʻi houʻana e hōʻoluʻolu i nā mīkini i lalo o nā mīkini e piʻi ana i ke kūpaʻa o Hec a hoʻomohala i nā hoʻolālā e hoʻonui ai i nā kūlana paʻakikī.
Post Time: Feb-18-2025