He aha ka waiwai viscosity o hydroxypropyl methylcellulose aqueous solution?

Hydroxypropyl methylcellulose (HPMC)he wai-soluble polymer mea i hoʻohana nui ʻia i ka lāʻau lapaʻau, ke kūkulu ʻana, ka meaʻai, nā mea hoʻonaninani a me nā māla ʻē aʻe. ʻO kāna waiwai viscosity kahi mea nui e ana i kāna ʻano rheological ma lalo o nā kaiapuni like ʻole. ʻO ka hoʻomaopopo ʻana i ka waiwai viscosity o HPMC aqueous solution e kōkua iā mākou e hoʻomaopopo maikaʻi i kāna ʻano a me kāna hana ma nā noi like ʻole.

1. ʻO ke kinona a me nā waiwai o HPMC

Loaʻa ka HPMC ma o ka hoʻololi kemika o ka cellulose maoli, i hana nui ʻia e ka hydroxypropylation a me ka methylation o nā molekule cellulose. I loko o ka hana kemika o HPMC, ʻo ka hoʻokomo ʻana o nā pūʻulu methyl (-OCH₃) a me hydroxypropyl (-OCH₂CHOHCH₃) e hoʻoheheʻe ʻia i ka wai a loaʻa iā ia ka hiki ke hoʻoponopono viscosity maikaʻi. Hoʻopili ʻia ka hana viscosity o kāna hoʻonā wai i nā ʻano ʻokoʻa a me nā mahana e nā kumu he nui e like me ke kaumaha molecular, degere o ka hoʻololi ʻana, ka hoʻonā hopena, etc.

2. Ka pilina ma waena o ka viscosity a me ka noʻonoʻo

Hoʻonui pinepine ʻia ka viscosity o AnxinCel®HPMC aqueous solution me ka hoʻonui ʻana i ka ʻike. ʻO kēia no ka mea ma nā kiʻekiʻe kiʻekiʻe, ua hoʻonui ʻia ka pilina ma waena o nā molekala, e hopena i ka piʻi ʻana o ke kahe kahe. Eia nō naʻe, ʻo ka solubility a me ka viscosity hiʻohiʻona o HPMC i loko o ka wai e pili pū ʻia e ke kaumaha molekala. Hōʻike pinepine ka HPMC me ke kaumaha molekala kiʻekiʻe i ka viscosity kiʻekiʻe, ʻoiai he haʻahaʻa haʻahaʻa ke kaumaha molekala haʻahaʻa.

Ma nā haʻahaʻa haʻahaʻa: Hōʻike ka HPMC solution i ka viscosity haʻahaʻa ma nā haʻahaʻa haʻahaʻa (e like me lalo o 0.5%). I kēia manawa, nāwaliwali ka pilina ma waena o nā molekala a maikaʻi ka wai. Hoʻohana maʻamau ia i nā noi e like me nā uhi a me ka hoʻokuʻu ʻana i ka lāʻau.

Ma nā kiʻekiʻe kiʻekiʻe: Ma nā kiʻekiʻe kiʻekiʻe (e like me 2% a i ʻole ke kiʻekiʻe), piʻi nui ka viscosity o HPMC aqueous solution, e hōʻike ana i nā waiwai like me nā colloidal solutions. I kēia manawa, ʻoi aku ka nui o ke kūʻē ʻana o ka wai o ka hopena.

3. Ka pilina ma waena o ka viscosity a me ka mahana

ʻO ka viscosity o ka HPMC aqueous solution ka maʻalahi loa i ka mahana. I ka piʻi ʻana o ka mahana, piʻi ka neʻe ʻana ma waena o nā molekele wai, a ʻoi aku ka nāwaliwali o ka pilina ma waena o nā molekala HPMC, e hopena i ka emi ʻana o ka viscosity. ʻO kēia hiʻohiʻona e hōʻike ana i ka hoʻohana ʻana o HPMC i nā mahana like ʻole e hōʻike i ka hoʻoponopono ikaika. No ka laʻana, ma lalo o nā kūlana wela kiʻekiʻe, e emi mau ana ka viscosity o ka HPMC, he mea nui loa ia i ke kaʻina hana lāʻau lapaʻau, ʻoi aku hoʻi i nā ʻano mea hoʻokuʻu i hoʻopaʻa ʻia i ka lāʻau, kahi e hoʻololi ai ka mahana i ke kūpaʻa a me ka hopena o ka hopena.

4. Ka hopena o ka pH ma ka Viscosity

Hiki ke hoʻopili ʻia ka viscosity o ka wai wai HPMC e ka waiwai pH o ka hopena. ʻOiai he mea non-ionic ka HPMC, ʻo kona hydrophilicity a me nā waiwai viscosity e pili nui ʻia e ka molecular structure a me ka hopena hopena. Eia nō naʻe, ma lalo o nā kūlana acidic a i ʻole alkaline, hiki ke loli ka solubility a me ka molecular structure o HPMC, no laila e pili ana i ka viscosity. Eia kekahi laʻana, ma lalo o nā kūlana acidic, hiki ke hoʻonāwaliwali iki ka solubility o ka HPMC, e hoʻonui ai i ka viscosity; ʻOiai ma lalo o nā kūlana alkaline, hiki i ka hydrolysis o kekahi HPMC ke hoʻohaʻahaʻa i kona kaumaha molekala, a laila e hōʻemi ana i kona viscosity.

5. Kaumaha Molekala a me Viscosity

ʻO ke kaumaha molekala kekahi o nā mea nui e pili ana i ka viscosity o ka hoʻonā wai wai HPMC. ʻO ke kaumaha o ka molekala kiʻekiʻe e hoʻonui i ka entanglement a me ka hoʻopili ʻana ma waena o nā molekala, e hoʻonui ai i ka viscosity. ʻOi aku ka maikaʻi o ka solubility i loko o ka wai a me ka viscosity haʻahaʻa o AnxinCel®HPMC. Pono nā koi noi like ʻole ke koho ʻana i ka HPMC me nā paona molekala like ʻole. No ka laʻana, i loko o nā uhi a me nā mea hoʻopili, koho pinepine ʻia ka HPMC kiʻekiʻe no ka hoʻopili maikaʻi ʻana a me ka wai; ʻoiai i loko o ka hoʻomākaukau lāʻau, hiki ke hoʻohana ʻia ka HPMC kaumaha haʻahaʻa no ka mālama ʻana i ka nui o ka hoʻokuʻu ʻana o nā lāʻau.

6. Ka pilina ma waena o ka shear rate a me ka viscosity

Hoʻololi pinepine ʻia ka viscosity o ka ʻoluʻolu wai HPMC me ka nui o ka shear rate, e hōʻike ana i ka ʻano pseudoplastic rheological maʻamau. ʻO ka wai Pseudoplastic kahi wai e emi mālie ana ka viscosity me ka piʻi ʻana o ka shear rate. ʻO kēia hiʻohiʻona e hiki ai i ka HPMC solution ke mālama i ka viscosity kiʻekiʻe ma ka liʻiliʻi ʻoki haʻahaʻa ke hoʻohana ʻia, a hoʻonui i ka wai i ka nui o ka shear rate. Eia kekahi laʻana, ma kaʻoihana hoʻopili, pono pinepine ka HPMC solution e hōʻike i ka viscosity kiʻekiʻe ma kahi haʻahaʻa haʻahaʻa ke hoʻohanaʻia e hōʻoia i ka hoʻopiliʻana a me ka pae o ka uhiʻana,ʻoiai i ka wā o ke kūkuluʻiaʻana, pono e hoʻonui i ka nui o kaʻili.

7. Hoʻohana a me nā hiʻohiʻona viscosity o HPMC

ʻO nā hiʻohiʻona viscosity oHPMCe hoʻohana nui ʻia ma nā ʻano he nui. Eia kekahi laʻana, ma kaʻoihana lāʻau lapaʻau, hoʻohana pinepineʻia ka HPMC ma keʻano he lāʻau hoʻokuʻu i hoʻokuʻuʻia, a ua hoʻohanaʻia kona hoʻoponopono viscosity e hoʻomalu i ka hoʻokuʻuʻana o ka lāʻau; i ka ʻoihana kūkulu, hoʻohana ʻia ka HPMC ma ke ʻano he mānoanoa e hoʻomaikaʻi i ka hana a me ka wai o ka mortar a me nā mea hoʻopili; i ka ʻoihana meaʻai, hiki ke hoʻohana ʻia ka HPMC e like me ka mānoanoa, emulsifier a me ka stabilizer e hoʻomaikaʻi i ka ʻono a me ke ʻano o ka meaʻai.

ʻO nā hiʻohiʻona viscosity o AnxinCel®HPMC aqueous solution ke kī i kāna noi ʻana ma nā kahua like ʻole. ʻO ka hoʻomaopopo ʻana i kona pilina me nā mea e like me ka neʻe ʻana, ka mahana, ka pH, ke kaumaha molekala a me ka nui o ka shear he mea nui ia no ka hoʻonui ʻana i ka hana huahana a me ka hoʻomaikaʻi ʻana i nā hopena noi.