ʻO ka ʻokoʻa ma waena o HPMC a me HEC

ʻO ka hydroxypropyl methylcellulose a me ka hydroxyethyl cellulose he cellulose, he aha ka ʻokoʻa ma waena o nā mea ʻelua?

ʻO ka ʻokoʻa ma waena o HPMC a me HEC

01 HPMC a me HEC
ʻO Hydroxypropyl methylcellulose (Hypromellose), i ʻike ʻia hoʻi ʻo hypromellose, he ʻano ether i hui pū ʻia me ka cellulose non-ionic. He polymer viscoelastic semisynthetic, hana ʻole ia i hoʻohana pinepine ʻia ma ke ʻano he lubricant i ka ophthalmology, a i ʻole he excipient a i ʻole kaʻa i nā lāʻau lapaʻau waha.
ʻO ka Hydroxyethyl cellulose (HEC), ke ʻano kemika (C2H6O2)n, he keʻokeʻo a melemele māmā paha, ʻala ʻole, ʻaʻohe ʻona fibrous a pauka paʻa i haku ʻia me ka alkaline cellulose a me ka ethylene oxide (a i ʻole chloroethanol). Hoʻomākaukau ʻia ia e ka etherification a pili i nā non-ionic soluble cellulose ethers. Ma muli o nā waiwai maikaʻi o HEC no ka hoʻomānoanoa, ka hoʻokuʻu ʻana, ka hoʻopuehu ʻana, ka emulsifying, ka hoʻopaʻa ʻana, ka hana ʻana i nā kiʻiʻoniʻoni, ka pale ʻana i ka makū a me ka hāʻawi ʻana i ka colloid pale, ua hoʻohana nui ʻia ia i ka ʻimi ʻaila, nā uhi, ke kūkulu ʻana, nā lāʻau lapaʻau a me ka meaʻai, ka lole, ka pepa a me ka polymer Polymerization a me nā kahua ʻē aʻe, 40 mesh sieving rate ≥ 99%.

02 ʻokoʻa
ʻOiai ʻo nā mea ʻelua he cellulose, nui nā ʻokoʻa ma waena o nā mea ʻelua:
ʻOkoʻa nā waiwai, nā hoʻohana, a me ka solubility o ka Hydroxypropyl methylcellulose a me ka hydroxyethylcellulose.

1. Nā Hiʻohiʻona ʻokoʻa
ʻO Hydroxypropyl methylcellulose: (HPMC) he keʻokeʻo a like paha ke olonā keʻokeʻo a i ʻole ka pauka granular, no nā ʻano ethers i hui pū ʻia me ka cellulose nonionic. He polymer viscoelastic ola ʻole semi-synthetic.
ʻO Hydroxyethylcellulose: (HEC) he fiber a pauka paʻa keʻokeʻo a melemele paha, ʻaʻohe ʻala a ʻaʻohe ʻawahia. Hoʻoheheʻe ʻia ia e ka cellulose alkaline a me ka ethylene oxide (a i ʻole chlorohydrin). No ka cellulose ether soluble non-ionic ia.

2. ʻOkoʻa ka hoʻoheheʻe ʻana
ʻO Hydroxypropyl methylcellulose: aneane hiki ʻole ke hoʻoheheʻe ʻia i ka ethanol piha, ether a me acetone. He wai colloidal maopopo a ʻālohilohi iki paha i hoʻoheheʻe ʻia i ka wai anuanu.
ʻO Hydroxyethyl cellulose: Loaʻa iā ia nā ʻano o ka hoʻomānoanoa, ke kau ʻana, ka hoʻopaʻa ʻana, ka emulsifying, ka hoʻopuehu ʻana a me ka moisturizing. Hiki iā ia ke hoʻomākaukau i nā hopena i nā pae viscosity like ʻole a he solubility paʻakai maikaʻi loa no nā electrolytes.
Loaʻa iā Hydroxypropyl methylcellulose nā ʻano o ka hiki ke mānoanoa, ke kūpaʻa paʻakai haʻahaʻa, ka paʻa pH, ka paʻa wai, ke kūpaʻa dimensional, nā waiwai hana kiʻiʻoniʻoni maikaʻi loa, ke kūpaʻa enzyme ākea, ka hoʻokahe a me ke kūpaʻa.

Nui nā ʻokoʻa ma waena o nā mea ʻelua, a ʻokoʻa loa hoʻi ko lākou pono i ka ʻoihana.

Hoʻohana nui ʻia ka Hydroxypropyl methylcellulose ma ke ʻano he mea hoʻomānoanoa, hoʻolaha a me ka mea hoʻopaʻa i ka ʻoihana uhi, a he solubility maikaʻi i ka wai a i ʻole nā ​​​​mea hoʻoheheʻe organik. I ka ʻoihana kūkulu hale, hiki ke hoʻohana ʻia i ka sima, gypsum, latex putty, plaster, a me nā mea ʻē aʻe, e hoʻomaikaʻi i ka dispersibility o ke one sima a hoʻomaikaʻi nui i ka plasticity a me ka paʻa ʻana o ka wai o ka mortar.
Loaʻa i ka Hydroxyethyl cellulose nā waiwai o ka hoʻomānoanoa, ke kau ʻana, ka hoʻopaʻa ʻana, ka emulsifying, ka hoʻopuehu ʻana a me ka moisturizing. Hiki iā ia ke hoʻomākaukau i nā hopena i nā pae viscosity like ʻole a he solubility paʻakai maikaʻi loa no nā electrolytes. ʻO ka Hydroxyethyl cellulose kahi mea hana kiʻiʻoniʻoni maikaʻi, tackifier, thickener, stabilizer a me dispersant i loko o nā shampoos, hair sprays, neutralizers, conditioners a me nā mea hoʻonani; i loko o nā pauka holoi Ma waenakonu he ʻano mea hoʻihoʻi lepo. Hoʻoheheʻe koke ka Hydroxyethyl cellulose i ka mahana kiʻekiʻe, hiki ke wikiwiki i ke kaʻina hana a hoʻomaikaʻi i ka pono hana. ʻO ka hiʻohiʻona maopopo o nā detergents i loaʻa ka hydroxyethyl cellulose ʻo ia ka hiki ke hoʻomaikaʻi i ka maʻalahi a me ka mercerization o nā lole.