No hea mai ka hydroxypropyl methylcellulose?

ʻO ka Hydroxypropyl methylcellulose (HPMC) he polymer synthetic i loaʻa mai ka cellulose, he polymer kūlohelohe maoli i hana i nā paia cell o nā mea kanu. Hana ʻia ka HPMC ma o ka hoʻololi ʻana i ka cellulose ma o ke kaʻina i kapa ʻia etherification.

I ka etherification, mālama ʻia ka cellulose me ka hui ʻana o ka propylene oxide a me ka methyl chloride ma lalo o nā kūlana hoʻomalu e hana i ka hydroxypropyl cellulose (HPC). Hoʻololi hou ʻia ka HPC ma o ka mālama ʻana iā ia me ka methanol a me ka waikawa hydrochloric e hana ai i ka HPMC.

ʻO ka huahana HPMC he mea hiki ke hoʻoheheʻe ʻia i ka wai, non-ionic polymer i loaʻa nā waiwai pono he nui, e like me ka paʻa ʻana o ka wai kiʻekiʻe, ka hiki ke hana kiʻiʻoniʻoni maikaʻi, a me nā waiwai mānoanoa maikaʻi loa. Hoʻohana kēia mau waiwai i ka HPMC i mea hoʻohui pono i ka nui o nā noi, e like me nā mea kūkulu hale, nā lāʻau lapaʻau, a me nā huahana meaʻai.

ʻOiai ka HPMC i loaʻa mai ka cellulose, he polymer synthetic ia i hana ʻia ma o ke kaʻina kemika paʻakikī.