Hydroxypropyl methylcellulose (HPMC) bụ ngwakọta multifunctional nke a na-ejikarị eme ihe na ụlọ ọrụ dị iche iche n'ihi nhazi kemịkalụ pụrụ iche na njirimara ya.
1. Ngwakọta kemịkalụ:
a.Ọkpụkpụ cellulose:
HPMC bụ ihe sitere na cellulose, nke pụtara na ọ sitere na cellulose, polysaccharide sitere n'okike dị na mgbidi cell osisi.Cellulose nwere nkeji ugboro ugboro nke β-D-glucose jikọtara ya na njikọ β(1→4) glycosidic.
b.Ngbanwe:
Na HPMC, a na-eji otu methyl na hydroxypropyl dochie moiety hydroxyl (-OH) nke ọkpụkpụ azụ cellulose.Ngbanwe a na-apụta site na mmeghachi omume etherification.Ọkwa nke nnọchi (DS) na-ezo aka na nkezi ọnụọgụ nke otu hydroxyl nọchiri otu glucose n'ime yinye cellulose.DS nke methyl na hydroxypropyl dị iche iche, nke na-emetụta arụmọrụ nke HPMC.
2. Nkwekọrịta:
a.Etherification:
A na-emepụta HPMC site na mmeghachi omume etherification nke cellulose na propylene oxide na methyl chloride.Usoro a gụnyere imeghachi cellulose na propylene oxide iji webata otu hydroxypropyl wee jiri methyl chloride ewebata otu methyl.
b.Ogo njikwa ọzọ:
Enwere ike ịchịkwa DS nke HPMC site n'ịgbanwe ọnọdụ mmeghachi omume dị ka okpomọkụ, oge mmeghachi omume, na ntinye uche.
3. Arụmọrụ:
a.Solubility:
HPMC bụ soluble na mmiri na ụfọdụ organic mgbaze, dị ka methanol na ethanol.Otú ọ dị, solubility ya na-ebelata site n'ịdị arọ molekụla na-abawanye na ogo nke nnọchi.
b.Nhazi ihe nkiri:
HPMC na-etolite ihe nkiri na-enweghị atụ, na-agbanwe agbanwe mgbe agbazere na mmiri.Ihe nkiri ndị a nwere ezigbo ike igwe na ihe mgbochi.
C. Viscosity:
Ihe ngwọta HPMC na-egosipụta omume pseudoplastic, nke pụtara na viscosity ha na-ebelata na ọnụ ọgụgụ shear na-abawanye.The viscosity nke HPMC ngwọta dabere na ihe ndị dị ka itinye uche, molekụla arọ, na ogo nke nnọchi.
d.Ndokwa mmiri:
Otu n'ime ihe ndị bụ isi nke HPMC bụ ikike ya idowe mmiri.Ngwongwo a dị oke egwu na ngwa dị iche iche dị ka ihe owuwu ụlọ, ebe HPMC na-eji dị ka ihe na-ekpo ọkụ na ihe na-ejigide mmiri.
e.Adhesion:
A na-ejikarị HPMC eme ihe dị ka nrapado na ụlọ ọrụ dị iche iche n'ihi ike ya ịmepụta njikọ siri ike na ihe dị iche iche.
4. Ngwa:
a.Ụlọ ọrụ ọgwụ:
N'ọgwụ ọgwụ, a na-eji HPMC dị ka ihe nchikota, ihe mkpuchi ihe nkiri, ihe ntọhapụ a na-achịkwa, yana mgbanwe viscosity n'ụdị mbadamba.
b.Ụlọ ọrụ ihe owuwu:
A na-agbakwunye HPMC na ụrọ simenti, plasta dabeere na gypsum na nrapado taịlị iji kwalite ọrụ, njide mmiri na nrapado.
C. ụlọ ọrụ nri:
N'ụlọ ọrụ nri, a na-eji HPMC eme ihe dị ka ihe na-ekpu, stabilizer na emulsifier na ngwaahịa dị ka sauces, uwe na ice cream.
d.Ngwaahịa nlekọta onwe onye:
A na-eji HPMC dị ka ihe na-eku ume, emulsifier na onye na-emepụta ihe nkiri na ngwaahịa nlekọta onwe onye dị ka shampoos, lotions na creams.
e.Agba na mkpuchi:
Na agba na mkpuchi, a na-eji HPMC emeziwanye mgbasa nke pigmenti, njikwa viscosity na njide mmiri.
Hydroxypropylmethylcellulose (HPMC) bụ ngwakọta nwere ọtụtụ ngwa n'ofe ụlọ ọrụ dị iche iche.Ngwakọta kemịkalụ ya pụrụ iche, njikọ na akụrụngwa na-eme ka ọ bụrụ ihe dị mkpa na ọgwụ, ihe owuwu ụlọ, nri, ngwaahịa nlekọta onwe onye na agba / mkpuchi.Ịghọta ihe onwunwe nke HPMC na-enye ohere maka ngwa ahaziri iche na mpaghara dị iche iche, na-enye aka na ojiji ya na mkpa ya na usoro mmepụta nke oge a.
Oge nzipu: Feb-22-2024