ʻO ka Hydroxypropylmethylcellulose (HPMC) he polymer i hoʻohana nui ʻia i nā ʻoihana like ʻole. ʻO ia ka non-ionic cellulose ether, hiki ke hoʻoheheʻe ʻia i ka wai, ʻaʻohe mea ʻawaʻawa a me ka hoʻonāukiuki ʻole. Hoʻohana mau ʻia ʻo HPMC ma ke ʻano he mānoanoa, binder a emulsifier i nā meaʻai, lāʻau lapaʻau a me nā huahana mālama pilikino.
ʻO kekahi o nā waiwai koʻikoʻi o ka HPMC ʻo kona kaumaha molekala, e pili ana i kona viscosity. ʻO ka viscosity kahi ana o ke kū ʻana o ka wai e kahe. ʻO ke kiʻekiʻe o ka viscosity, ʻoi aku ka mānoanoa o ka wai. ʻO ke kaumaha molekala ke ana o ka nui mole, pili pono i ka viscosity o HPMC.
Loaʻa ka HPMC ma nā papa like ʻole e like me kona kaumaha molekala. Piʻi ka viscosity o HPMC me ke kaumaha mole. Hoʻopili pū ʻia ka viscosity o HPMC e ke degere o ka hoʻololi ʻana (DS), ʻo ia ka helu o nā hui hydroxypropyl a me methyl i hoʻopili ʻia i ka iwi kuamoʻo cellulose. ʻO ke kiʻekiʻe o ka DS, ʻoi aku ka kiʻekiʻe o ke kaumaha molekala a me ka viscosity o HPMC.
Hoʻopili pū ʻia ka viscosity o ka HPMC e ka polymer concentration i loko o ka hopena. Ma nā haʻahaʻa haʻahaʻa, hoʻopuehu ʻia nā kaulahao polymer a haʻahaʻa ka viscosity solution. Ke piʻi aʻe ka ʻike, hoʻomaka nā kaulahao polymer e uhi a hoʻopaʻa ʻia, e hopena i ka piʻi ʻana o ka viscosity. ʻO ka ʻike ʻana i hoʻomaka ʻia ai nā kaulahao polymer e uhi ʻia i kapa ʻia ʻo ka overlap concentration.
ʻO ke kaumaha o ka molekala a me ka viscosity o HPMC he mau ʻāpana koʻikoʻi i nā ʻano huahana he nui. I ka ʻoihana meaʻai, hoʻohana ʻia ʻo HPMC ma ke ʻano he mānoanoa no nā ʻuala, nā lole a me nā mea i kālua ʻia. ʻO ke kaumaha molekala kūpono a me ka viscosity o HPMC e hōʻoia i ke ʻano makemake a me ka waha o ka huahana hope.
I ka ʻoihana lāʻau lapaʻau, hoʻohana ʻia ʻo HPMC ma ke ʻano he mea hoʻopaʻa no nā papa a me nā capsules. ʻO ke kaumaha o ka molecular a me ka viscosity o HPMC e hoʻoholo i ka ikaika o ka papa a me kona hiki ke hoʻoheheʻe i loko o ka ʻōpū o ka ʻōpū.
Ma ka ʻoihana mālama pilikino, hoʻohana ʻia ʻo HPMC ma ke ʻano he mānoanoa a me ka emulsifier i nā shampoos, lotions a me nā ʻaila. ʻO ke kaumaha molekala kūpono a me ka viscosity o HPMC e hōʻoia i ka kūlike a me ka paʻa o ka huahana.
I ka hōʻuluʻulu ʻana, ʻo ke kaumaha molecular a me ka viscosity o HPMC he mau ʻāpana koʻikoʻi e pili ana i kāna hana ma nā ʻoihana like ʻole. He mea koʻikoʻi ka hoʻomaopopo ʻana i ka pilina ma waena o kēia mau ʻāpana i ka hoʻokumu ʻana i nā huahana i kūpono i nā kikoʻī i makemake ʻia. ʻO HPMC kahi polymer maʻalahi a waiwai e kōkua i ka hoʻomaikaʻi ʻana i ka maikaʻi a me ka hana o nā huahana he nui.
Ka manawa hoʻouna: Jul-18-2023