He aha nā mea e pili ana i ka viscosity o ka solution aqueous hydroxypropyl methylcellulose?

ʻO ka Hydroxypropylmethylcellulose (HPMC) he polymer wai-soluble i loaʻa mai ka cellulose kūlohelohe a hoʻohana nui ʻia i nā ʻoihana he nui ma muli o kona hiki ke hana i nā ʻano viscosities i loko o nā wai wai. Loaʻa i ka HPMC ka nui o nā noi i ka lāʻau lapaʻau, nā meaʻai a me nā ʻoihana hoʻonaninani. ʻO ka Viscosity kahi hiʻohiʻona nui o nā hoʻonā HPMC e pili ana i kā lākou hana i kēia mau noi.

Nā mea e pili ana i ka viscosity:

1. Hoʻopili: ʻO ka hoʻonui ʻana o ka HPMC i ka hopena e pili pono ana i ka viscosity o ka hopena. Ke piʻi aʻe ka manaʻo o ka HPMC, piʻi ka viscosity o ka hoʻonā e like me ka hoʻopili ʻana o nā kaulahao polymer. Eia nō naʻe, hiki i ke kiʻekiʻe kiʻekiʻe ke hopena i kahi hopena ʻoʻoleʻa a me ka gel-like, ʻaʻole makemake ʻia no kekahi mau noi.

2. Kaumaha Molekala: ʻO ke kaumaha o ka HPMC he kumu nui e pili ana i ka viscosity o ka hopena. Ke piʻi aʻe ka paona molekala o HPMC, piʻi pū ka viscosity o ka hopena ma muli o ka hoʻonui ʻia ʻana o nā kaulahao polymer. ʻO ka HPMC me ke kaumaha molekala kiʻekiʻe he mau kaulahao ʻoi aku ka lōʻihi, ka hopena i ka hopena ʻoi aku ka viscous.

3. Ka wela: Hoʻopili pū ʻia ka viscosity o ka hopena HPMC e ka mahana. Ke piʻi aʻe ka mahana o ka hopena, emi ka viscosity o ka hopena. ʻO ka emi ʻana o ka viscosity ma muli o ka hoʻemi ʻana i nā ikaika intermolecular ma waena o nā kaulahao polymer, ka hopena i ka liʻiliʻi o ka entanglement a me ka hoʻonui ʻana i ka wai.

4. Waiwai pH: E pili ana ka waiwai pH o ka hopena i ka viscosity o ka solution HPMC. Hiki i nā waiwai pH ma waho o ka laulā 5.5-8 ke hoʻemi i ka viscosity ma muli o ka hoʻololi ʻana i ka solubility a me ka uku o ka HPMC polymer.

5. Salinity: ʻO ka paʻakai a i ʻole ka ikaika ionic o ka hopena e pili pū ana i ka viscosity o ka solution HPMC. ʻO ka hoʻonui ʻana i ka paʻakai ke keʻakeʻa ʻana i nā pilina kaula polimer HPMC, ka hopena i ka emi ʻana o ka viscosity solution.

6. Nā kūlana shear: ʻO nā kūlana shear kahi i hōʻike ʻia ai ka hopena HPMC e pili pū i ka viscosity o ka hopena. Hiki i nā kūlana shear ke ho'ēmi iki i ka viscosity, e like me ka hui ʻana a i ʻole ka pahū ʻana i kahi hopena. Ke wehe ʻia ke kūlana shear, hoʻi koke ka viscosity i kahi kūlana paʻa.

i ka hopena:

Hoʻopili ʻia ka viscosity o HPMC aqueous solution e nā ʻano mea like ʻole e pono e noʻonoʻo ʻia i ka wā e hoʻokumu ai i ka huahana. ʻO ka paona, ke kaumaha molekala, ka mahana, ka pH, ka paʻakai, a me nā kūlana shear ka mea nui e pili ana i ka viscosity o nā hoʻonā HPMC. ʻO ka hoʻomaopopo ʻana i kēia mau mea hiki ke kōkua i nā mea hana e hoʻopaʻa i ka viscosity o nā hoʻonā HPMC no nā noi kikoʻī. ʻO ka Viscosity kahi hiʻohiʻona nui o nā hoʻonā HPMC no ka mea hiki iā ia ke hoʻoholo i ka hana a me ka paʻa o nā huahana HPMC.