He aha nā mea kemika o Hypromellose?

ʻO Hydroxypropyl Methylcellulose (HPMC), i kapa ʻia ʻo Hypromellose, he polymer synthetic i loaʻa mai ka cellulose. ʻO kāna mau waiwai kemika:

1. Hoʻoheheʻe: Hiki ke hoʻoheheʻe ʻia ka HPMC i ka wai a hoʻokumu i kahi hopena maʻemaʻe ke hui pū ʻia me ka wai. ʻO ka solubility o HPMC e pili ana i kona degere o ka hoʻololi ʻana (DS) a me ka pae viscosity.
2. Viscosity: Loaʻa ka HPMC i nā māka viscosity like ʻole, mai ka haʻahaʻa a hiki i ka viscosity kiʻekiʻe. ʻO ka viscosity o HPMC e pili ana i kona kaumaha molekala, degere o ka hoʻololi ʻana, a me ka noʻonoʻo.
3. Paʻa: Paʻa ka HPMC ma lalo o nā kūlana maʻamau o ka mahana a me ka pH. He kū'ē i ka microbial degradation a ʻaʻole hiki ke decompose maʻalahi.
4. Nā waiwai wela: Loaʻa i ka HPMC ke kūpaʻa wela maikaʻi a hiki ke pale i nā mahana a hiki i 200 ° C me ka ʻole o ka decomposing.
5. ʻO ka hana o ka ʻili: He hana ʻili ka HPMC ma muli o kona ʻano polar, i mea e pono ai e like me ka dispersant a me ka emulsifier i nā noi like ʻole.
6. Hygroscopicity: He hygroscopic ka HPMC, 'o ia ho'i, hiki ke ho'omohu i ka makū mai ke kaiapuni. Hoʻohana kēia waiwai iā ia ma ke ʻano he mea mālama wai i nā noi like ʻole.
7. Ka ho'āʻo kemika: ʻAʻole kemika ʻo HPMC a ʻaʻole hoʻopili me nā mea kemika ʻē aʻe. Eia nō naʻe, hiki iā ia ke hana i nā paʻa hydrogen me nā molekole polar ʻē aʻe, i mea e pono ai ia ma ke ʻano he mānoanoa, mea hoʻopaʻa, a me ke kiʻiʻoniʻoni ma mua o nā noi like ʻole.

I ka hōʻuluʻulu manaʻo,HPMChe mau mea kemika e lilo ia i polymer maʻalahi a pono i nā ʻoihana like ʻole, me nā lāʻau lapaʻau, nā meaʻai, nā mea hoʻonaninani, a me ke kūkulu ʻana. ʻO kona solubility, viscosity, stability, thermal properties, surface activity, hygroscopicity, and chemical reactivity e kūpono ia no ka nui o nā noi.