ʻO ka HPMC a i ʻole hydroxypropyl methylcellulose he mea maʻalahi i hoʻohana ʻia i nā ʻoihana like ʻole me nā lāʻau lapaʻau, nā mea hoʻonaninani a me nā meaʻai.Hoʻohana nui ʻia ʻo ia e like me ka mānoanoa a me ka emulsifier, a hoʻololi kona viscosity ma muli o ka mahana i ʻike ʻia.Ma kēia ʻatikala, e nānā mākou i ka pilina ma waena o ka viscosity a me ka mahana ma HPMC.
Ua wehewehe ʻia ka viscosity ma ke ʻano he ana o ke kūpaʻa ʻana o ka wai e kahe.ʻO ka HPMC he mea semi-paʻa ka mea e pili ana ke ana kūʻē i nā kumu like ʻole, me ka mahana.No ka hoʻomaopopo ʻana i ka pilina ma waena o ka viscosity a me ka mahana ma HPMC, pono mua mākou e ʻike pehea i hana ʻia ai ka mea a me ke ʻano o ka hana ʻana.
Loaʻa ka HPMC mai ka cellulose, kahi polymer kūlohelohe i nā mea kanu.No ka hana ʻana i ka HPMC, pono e hoʻololi kemika me ka propylene oxide a me ka methyl chloride.Hoʻololi kēia hoʻololi i ka hoʻokumu ʻana o nā hui hydroxypropyl a me methyl ether i ke kaulahao cellulose.ʻO ka hopena he mea semi-solid i hiki ke hoʻoheheʻe ʻia i loko o ka wai a me nā mea hoʻoheheʻe organik a hoʻohana ʻia i nā ʻano noi like ʻole, e like me ka uhi ʻana no nā papa a ma ke ʻano he mea mānoanoa no nā meaʻai, a me nā mea ʻē aʻe.
ʻO ka viscosity o ka HPMC e pili ana i ka neʻe ʻana o ka mea a me ka mahana i ʻike ʻia ai.Ma keʻano laulā, emi ka viscosity o HPMC me ka hoʻonui ʻana i ka ʻike.ʻO ia hoʻi, ʻoi aku ka nui o ka HPMC i nā viscosities haʻahaʻa a me ka hope.
Eia naʻe, ʻoi aku ka paʻakikī o ka pilina ma waena o ka viscosity a me ka mahana.E like me ka mea i ʻōlelo ʻia ma mua, piʻi ka viscosity o HPMC me ka emi ʻana o ka mahana.'O ia ho'i, ke kau 'ia ka HPMC i nā ha'aha'a ha'aha'a, e emi iho ana kona hiki ke kahe a lilo i mea viscous.Pēlā nō, ke hoʻokau ʻia ka HPMC i nā wela kiʻekiʻe, piʻi ka hiki ke kahe a hoʻemi ʻia kona viscosity.
Aia nā kumu like ʻole e pili ana i ka pilina ma waena o ka mahana a me ka viscosity ma HPMC.No ka laʻana, hiki i nā solutes ʻē aʻe i loko o ka wai ke hoʻopili i ka viscosity, e like me ka pH o ka wai.Ma keʻano laulā, akā naʻe, aia kahi pilina inverse ma waena o ka viscosity a me ka mahana ma HPMC ma muli o ka hopena o ka mahana ma ka hoʻopaʻa hydrogen a me nā pilina molekala o nā kaulahao cellulose ma HPMC.
Ke hoʻokau ʻia ka HPMC i nā haʻahaʻa haʻahaʻa, ʻoi aku ka paʻakikī o nā kaulahao cellulose, kahi e hoʻonui ai i ka hoʻopili hydrogen.ʻO kēia mau paʻa hydrogen ke kahe ʻana o ke kūʻē ʻana o ka mea, a laila e hoʻonui ai i kona viscosity.ʻO ka mea ʻē aʻe, i ka wā i hoʻokau ʻia ai nā HPMC i nā wela kiʻekiʻe, ua ʻoi aku ka maʻalahi o nā kaulahao cellulose, a ua liʻiliʻi nā paʻa hydrogen.Hoʻemi kēia i ke kūʻē ʻana o ka mea i ke kahe, e hopena i ka viscosity haʻahaʻa.
Pono e hoʻomaopopo ʻia ʻoiai aia ka pilina inverse ma waena o ka viscosity a me ka mahana o HPMC, ʻaʻole kēia ka hihia no nā ʻano HPMC āpau.Hiki ke ʻokoʻa ka pilina ma waena o ka viscosity a me ka mahana ma muli o ke kaʻina hana hana a me ka pae kikoʻī o ka HPMC i hoʻohana ʻia.
He mea nui ka HPMC i hoʻohana nui ʻia i nā ʻoihana like ʻole no kona mānoanoa a me ka emulsifying waiwai.ʻO ka viscosity o ka HPMC e pili ana i nā kumu he nui, e like me ka neʻe ʻana o ka mea a me ka mahana i ʻike ʻia ai.Ma keʻano laulā, ʻokoʻa ka viscosity o HPMC i ka mahana, ʻo ia hoʻi i ka emi ʻana o ka mahana, piʻi ka viscosity.Ma muli o ka hopena o ka wela ma ka hoʻopaʻa hydrogen a me ka pilina molekala o nā kaulahao cellulose i loko o HPMC.
Ka manawa hoʻouna: Sep-08-2023