He aha ka pH waiwai o ka hydroxyethyl cellulose

ʻO ka Hydroxyethyl cellulose (HEC) he polymer non-ionic, wai-soluble i loaʻa mai ka cellulose, he polymer kūlohelohe i loaʻa i loko o nā paia cell o nā mea kanu.Hoʻohana nui ʻia ia i nā ʻoihana like ʻole e like me nā lāʻau lapaʻau, nā mea hoʻonaninani, nā pena, nā adhesives, a me nā huahana meaʻai ma muli o kāna mau waiwai kūʻokoʻa e like me ka mānoanoa, ka hoʻopaʻa ʻana, a me ka hiki ke mālama i ka wai.Eia nō naʻe, ʻo ke kūkākūkā ʻana i ka waiwai pH o HEC e pono ai ka ʻike ākea o kāna mau waiwai, hoʻolālā, a me nā noi.

Ka hoʻomaopopo ʻana i ka Hydroxyethyl Cellulose (HEC):

1. Hana Kemika:

Hoʻopili ʻia ʻo HEC e ka hopena o ka cellulose me ka ethylene oxide, ka hopena i ka hoʻokomo ʻana o nā pūʻulu hydroxyethyl (-CH2CH2OH) i ka iwi kuamoʻo cellulose.

ʻO ka degere o ka hoʻololi ʻana (DS) e pili ana i ka helu awelika o nā pūʻulu hydroxyethyl i kēlā me kēia ʻāpana glucose i ke kaulahao cellulose a hoʻoholo i nā waiwai o HEC.ʻO nā waiwai DS kiʻekiʻe e alakaʻi i ka hoʻonui ʻana i ka wai a me ka viscosity haʻahaʻa.

2. Waiwai:

Hiki ke hoʻoheheʻe ʻia ʻo HEC i ka wai a hana i nā ʻoluʻolu maʻemaʻe, kahi e kūpono ai no nā noi like ʻole e koi ana i nā ʻano hoʻohālikelike.

Hōʻike ia i ke ʻano pseudoplastic, ʻo ia hoʻi ke emi nei kona viscosity ma lalo o ke koʻikoʻi shear, e ʻae ai i ka hoʻohana maʻalahi a me ka lawelawe ʻana.

Hoʻopili ʻia ka viscosity o nā hopena HEC e nā mea e like me ka neʻe ʻana, ka mahana, ka pH, a me ke alo o nā paʻakai a i ʻole nā ​​​​mea hoʻohui ʻē aʻe.

3. Nā noi:

ʻO nā lāʻau lapaʻau: Hoʻohana ʻia ʻo HEC ma ke ʻano he mānoanoa a me ka stabilizer i ka waha a me ka topical pharmaceutical formulations e like me ka ʻaila, ka ʻaila, a me nā mea hoʻomaha.

Mea Hoʻomaʻamaʻa: He mea maʻamau ia i nā huahana mālama pilikino e like me nā shampoos, lotions, a me nā ʻaila ma muli o kona mānoanoa a me ka emulsifying waiwai.

Nā Pena a me nā Kāpena: Hoʻohui ʻia ʻo HEC i nā pena, nā uhi, a me nā mea hoʻopili e kāohi i ka viscosity, hoʻomaikaʻi i nā waiwai kahe, a hoʻomaikaʻi i ka hoʻokumu ʻana i ke kiʻiʻoniʻoni.

ʻOihana Meaʻai: I nā huahana meaʻai, lawelawe ʻo HEC ma ke ʻano he mānoanoa, stabilizer, a me ka emulsifier i nā mea e like me nā meaʻai, nā lole, a me nā huahana waiū.

Waiwai pH o Hydroxyethyl Cellulose (HEC):

1. Pili ʻia ka pH:

Hiki i ka pH o kahi hopena i loaʻa iā HEC ke hoʻololi i kāna ʻano a me kāna hana i nā noi like ʻole.

ʻO ka mea maʻamau, paʻa ka HEC ma kahi ākea pH ākea, maʻamau ma waena o ka pH 2 a me ka pH 12. Eia naʻe, hiki i nā kūlana pH koʻikoʻi ke hoʻopilikia i kona mau waiwai a me ke kūpaʻa.

2. Nā hopena o ka pH ma luna o ka Viscosity:

Hiki i ka viscosity o nā ʻoluʻolu HEC ke hilinaʻi i ka pH, ʻo ia hoʻi ma nā koina pH kiʻekiʻe a haʻahaʻa paha.

Ma kahi kokoke i ka pae pH kūʻokoʻa (pH 5-8), hōʻike pinepine nā hāʻina HEC i ko lākou viscosity kiʻekiʻe.

Ma nā koina pH haʻahaʻa a kiʻekiʻe paha, hiki i ke kuamoʻo cellulose ke hana i ka hydrolysis, ka hopena o ka emi ʻana o ka viscosity a me ka paʻa.

3. Hoʻoponopono pH:

I loko o nā papa hana kahi e pono ai ka hoʻoponopono pH, hoʻohana pinepine ʻia nā buffers e mālama i ka pae pH makemake.

ʻO nā pale maʻamau e like me ka citrate a i ʻole ka phosphate buffers ua kūpono me HEC a kōkua i ka hoʻopaʻa ʻana i kāna mau waiwai i loko o kahi pae pH kikoʻī.

4. Noʻonoʻo no ka noi:

Pono nā mea hoʻopuka e noʻonoʻo i ka hoʻohālikelike pH o HEC me nā mea ʻē aʻe i ka hana.

I kekahi mau hihia, pono paha e hoʻololi i ka pH o ka hoʻokumu ʻana e hoʻomaikaʻi i ka hana o HEC.

ʻO ka Hydroxyethyl cellulose (HEC) he polymer versatile me nā noi ākea ma nā ʻoihana like ʻole.ʻOiai ʻoi aku ka paʻa o ka pH ma luna o kahi ākea ākea, hiki i nā kiʻekiʻe pH ke hoʻopilikia i kāna hana a me ke kūpaʻa.He mea nui ka hoʻomaopopo ʻana i ka hilinaʻi pH o HEC no ka hoʻokumu ʻana i nā huahana kūpono a paʻa i nā lāʻau lapaʻau, nā mea hoʻonaninani, nā pena, nā adhesives, a me nā huahana meaʻai.Ma ka noʻonoʻo ʻana i ka hoʻohālikelike ʻana i ka pH a me ka hoʻohana ʻana i nā hoʻolālā hoʻolālā kūpono, hiki iā HEC ke hoʻomau i ka lawelawe ma ke ʻano he mea waiwai i nā ʻano noi like ʻole.