ʻO HPMC, ka mea i kapa ʻia ʻo hydroxypropyl methylcellulose, he polymer wai-soluble i hoʻohana nui ʻia i ka ʻoihana hoʻonaninani, lāʻau lapaʻau a me nā ʻoihana meaʻai. Loaʻa ka polymer mai ka cellulose, kahi mea maoli i loaʻa i nā mea kanu. ʻO ka HPMC kahi mānoanoa maikaʻi loa i hoʻohana nui ʻia e hoʻonui i ka viscosity o nā hopena like ʻole. ʻO kona hiki ke hana i nā gels thixotropic ka mea i koho kaulana i nā noi he nui.
Nā waiwai mānoanoa o HPMC
ʻIke ʻia nā waiwai mānoanoa o HPMC i ka ʻoihana. Hiki i ka HPMC ke hoʻonui i ka viscosity o kahi hoʻonā ma ka hana ʻana i kahi pūnaewele gel e pahele ai i nā molekole wai. Hoʻokumu nā ʻāpana HPMC i kahi pūnaewele gel ke hoʻoheheʻe ʻia i ka wai a huki kekahi i kekahi ma o nā paʻa hydrogen. Hoʻokumu ka pūnaewele i kahi matrix ʻekolu-dimensional e hoʻonui ai i ka viscosity o ka hopena.
ʻO kekahi o nā pōmaikaʻi nui o ka hoʻohana ʻana i ka HPMC ma ke ʻano he mānoanoa, ʻo ia ka hiki ke mānoanoa i kahi hopena me ka ʻole o ka hoʻopili ʻana i kona mālamalama a i ʻole kona kala. ʻO ka HPMC he polymer non-ionic, ʻo ia hoʻi, ʻaʻole ia e hāʻawi i kekahi uku i ka hopena. ʻO kēia ka mea kūpono no ka hoʻohana ʻana i nā ʻano hoʻohālike akaka.
ʻO kekahi pōmaikaʻi o ka HPMC ʻo ia ka hiki ke hoʻopanoanoa i nā hāʻina ma nā haʻahaʻa haʻahaʻa. ʻO ia ke ʻano he liʻiliʻi wale nō o ka HPMC e pono ai e hoʻokō i ka viscosity i makemake ʻia. Hiki i kēia ke mālama i nā kumukūʻai no nā mea hana a hāʻawi i nā mea kūʻai aku i nā huahana waiwai.
Thixotropy o HPMC
ʻO Thixotropy ka waiwai o kahi mea e hoʻemi ai i ka viscosity ke hoʻokau ʻia i ke koʻikoʻi shear a hoʻi hou i kona viscosity kumu i ka wā e wehe ʻia ai ke koʻikoʻi. He mea thixotropic ka HPMC. Eia naʻe, ke hoʻopau ʻia ke koʻikoʻi, hoʻi hou ia i ka paʻa a mānoanoa hou.
ʻO nā waiwai thixotropic o HPMC he mea kūpono ia no nā noi he nui. No ka laʻana, hoʻohana mau ʻia ia i ka pena, e like me ke kapa mānoanoa ma luna o ka ʻili. ʻO nā waiwai thixotropic o HPMC e hōʻoiaʻiʻo i ka waiho ʻana o ka uhi ma luna o ka ʻili me ka ʻole o ka luʻu a me ka holo ʻole. Hoʻohana pū ʻia ʻo HPMC i ka ʻoihana meaʻai ma ke ʻano he mānoanoa no nā ʻuala a me nā lole. ʻO nā waiwai thixotropic o HPMC e hōʻoiaʻiʻo ʻaʻole e kulu nā kīʻaha a i ʻole nā ʻaʻahu mai nā puna a i ʻole nā papa, akā e mau nō ka mānoanoa a paʻa.
ʻO HPMC kahi polymer maʻamau me nā noi he nui i nā ʻoihana like ʻole. ʻO kāna mau waiwai mānoanoa a me nā waiwai thixotropic e kūpono ia no ka hoʻomaʻamaʻa, lāʻau lapaʻau a me nā meaʻai. ʻO ka HPMC kahi mānoanoa maikaʻi loa, e hoʻonui ana i ka viscosity o kahi hopena me ka ʻole o ka hoʻopili ʻana i kona mālamalama a i ʻole kona kala. ʻO kāna mau waiwai thixotropic e hōʻoiaʻiʻo ʻaʻole e lilo ka hopena i mānoanoa a lahilahi paha, ma muli o ka noi. He mea koʻikoʻi ka HPMC i nā huahana he nui, a ʻo kāna mau pōmaikaʻi he mea nui ia no nā mea hana a me nā mea kūʻai aku.
Ka manawa hoʻouna: ʻAukake-25-2023