ʻIke kumu o ka Hydroxyethyl Methyl Cellulose

inoa huahana:hydroxyethyl methyl celluloseHEMC

inoa Pelekane: Hymetellose

Alias: methyl hydroxyethyl cellulose; MHEC, hydroxyethyl methyl cellulose ether;

hydroxymethyl ethyl cellulose; 2-hydroxyethyl methyl ether cellulose

inoa Pelekane: Methylhydroxyethylcellulose; Cellulose; 2-hydroxyethyl methyl ether; HEMC; Tyopur MH[1]

Kemika: Hydroymethylmethylecellulose; Hydroxyethylmethylcellulose; Hydroxymethylethylcellulose.

Nā Molekula: C2H6O2 xCH4O x PhEur 2002 wehewehe i ka hydroxyethylmethylcellulose ma ke ʻano he O-methylated ʻāpana, he ʻāpana O-hydroxymethylated cellulose. Hōʻike ʻia nā kikoʻī like ʻole ma ke ʻano o ka viscosity i ʻike ʻia i nā mPa s o kahi solution aqueous 2% w/v ma 20°C.

Kaumaha Molekala: PhEur 2002 wehewehe i ka hydroxyethylmethylcellulose he hapa O-methylated, he hapa O-hydroxymethylated cellulose. Hōʻike ʻia nā kikoʻī like ʻole ma ke ʻano o ka viscosity i ʻike ʻia i nā mPa s o kahi solution aqueous 2% w/v ma 20°C.

ʻO nā hiʻohiʻona nui o ka hydroxyethyl methyl cellulose (HEMC) he:

1. Solubility: hiki ke hoʻoheheʻe ʻia i ka wai a me kekahi mau mea hoʻoheheʻe organik, hiki ke hoʻoheheʻe ʻia ka HEMC i ka wai anuanu, ʻo ka nui o ka nui o ka hoʻoholo ʻana e ka viscosity, ʻokoʻa ka solubility me ka viscosity, ʻoi aku ka haʻahaʻa o ka viscosity, ʻoi aku ka nui o ka solubility.

2. Paʻakai kū'ē: HEMC huahana he non-ionic cellulose ethers aʻaʻole polyelectrolytes, no laila, i ke alo o ka metala paʻakai a organic electrolytes, ua 'ano paʻa i loko o ka wai, akā, excessive hoʻohui o electrolytes hiki ke kumu gelation a me ka ua.

3. Ka hana o ka ʻili: E like me ka hana ʻana o ka aqueous solution, hiki ke hoʻohana ʻia e like me ka colloid protection agent, emulsifier a me dispersant.

4. Thermal gel: Ke hoʻomāhana ʻia ka hopena wai wai o ka huahana HEMC i kekahi mahana, lilo ia i opaque, gels, a hana i kahi eha, akā i ka wā e hoʻomau mau ʻia, hoʻi ia i ke kūlana hoʻonā kumu, a hiki mai kēia gel a me ka ua. . ʻO ka mahana e hilinaʻi nui ʻia i kā lākou lubricants, nā mea kōkua hoʻomaha, nā colloids pale, emulsifiers, etc.

5. Metabolic inertness a me ka haʻahaʻa ʻala a me ka ʻala: HEMC i hoʻohana nui ʻia i ka meaʻai a me ka lāʻau lapaʻau no ka mea ʻaʻole ia i hoʻoheheʻe ʻia a he haʻahaʻa haʻahaʻa a me ke ʻala.

6. Antifungal: HEMC maikaʻi ka mana antifungal a me ka paʻa viscosity maikaʻi i ka wā mālama lōʻihi.

7. PH paʻa: Ka viscosity o HEMC huahana aqueous solution ua paʻakikī i ka waika a i ʻole ka alkali, a paʻa ka pH waiwai ma ka laulā o 3.0-11.0.

Noi: Hiki ke hoʻohana ʻia ka Hydroxyethyl methyl cellulose ma ke ʻano he mea pale colloid, emulsifier a me ka dispersant ma muli o ka hana o ka ʻili o ka wai. ʻO kahi laʻana o kāna noi penei: ʻO ka hopena o ka hydroxyethyl methyl cellulose i nā waiwai o ka sima. ʻO ka Hydroxyethyl methylcellulose he pauka keʻokeʻo ʻole, ʻono ʻole, ʻaʻole ʻona i hoʻoheheʻe ʻia i loko o ka wai anuanu e hana ai i kahi hopena akaka. Loaʻa iā ia nā waiwai o ka mānoanoa, hoʻopaʻa, dispersing, emulsifying, film-forming, suspending, adsorbing, gelling, surface-active, hoʻopaʻa i ka wai a me ka pale ʻana i nā colloids. Ma muli o ka hana o ka ʻili o ka wai, hiki ke hoʻohana ʻia e like me kahi mea pale colloid, emulsifier a me kahi dispersant. ʻO Hydroxyethyl methyl cellulose aqueous solution he hydrophilicity maikaʻi a he mea hoʻopaʻa wai kiʻekiʻe.