HPMC (Hydroxypropyl Methyl Cellulose) bụ ihe a na-ejikarị cellulose eme ihe nke a na-ejikarị eme ihe n'ọtụtụ ebe mmepụta ihe, karịsịa na njikwa viscosity na ihe ndị na-eme ka ọ dị arọ. N'ihi na ya pụrụ iche chemical Ọdịdị na anụ ahụ Njirimara, HPMC nwere ike n'ụzọ dị irè melite viscosity, kwụsie ike na rheological Njirimara nke ulo oru ngwaahịa. Ya mere, a na-ejikarị ya eme ihe na mkpuchi, ihe ụlọ, ọgwụ, ihe ịchọ mma, nri na ubi ndị ọzọ.
Njiri mara nke HPMC
HPMC bu ihe eji eme ihe nke emere site na cellulose eke emeghariri nke oma. Agbụ mkpụrụ ndụ ya nwere otu hydrophilic na otu hydrophobic, ya mere ọ nwere ezigbo mmiri solubility na ihe mgbaze organic. Ọ na-agbaze na mmiri oyi ka ọ bụrụ ihe ngwọta na-ahụ anya ma ọ bụ translucent viscous. Ihe ndị dị mkpa nke HPMC gụnyere:
Ngwongwo na-eme ka ọ dị oke mma: HPMC nwere ike ịbawanye viscosity nke ngwọta na obere mkpokọta dị ala, na-enye mmetụta dị oke elu. Nke a na-eme ka ọ bụrụ ihe dị mkpa na ngwaahịa ụlọ ọrụ dị ka ihe ụlọ na mkpuchi iji melite arụmọrụ ngwa nke ngwaahịa.
Ezigbo njikwa viscosity: HPMC nwere ike nweta njikwa viscosity ziri ezi site n'ịgbanwe ịdị arọ ya na ogo nke nnọchi (dị ka ọnụego nnọchi methoxy na hydroxypropyl) iji gboo mkpa nke ọnọdụ ngwa dị iche iche. Dịka ọmụmaatụ, na ụlọ ọrụ mkpuchi, HPMC nwere viscosities dị iche iche nwere ike inye ọkwa dị iche iche na ịrụ ọrụ maka mkpuchi.
Ndozi rheological mara mma: Njirimara rheological nke HPMC nwere ike gbanwee site na mgbanwe na ọnụego shear. Nke a pụtara na mgbe static, ọ na-etolite usoro viscous dị ukwuu, na viscosity na-ebelata mgbe a na-etinye ike ịkwa osisi (dịka ịkpali ma ọ bụ ịgbanye), na-eme ka ngwaahịa ahụ dị mfe itinye. N'ime ụfọdụ ihe n'ala na-ebuli onwe ya, njirimara HPMC a dị mkpa karịsịa.
Ezigbo biocompatibility na enweghị nsi: HPMC sitere na cellulose eke, nwere ezigbo ihe nleba anya, anaghị egbu egbu, anaghị akpasu iwe, ma na-egbo mkpa nchekwa gburugburu ebe obibi. Ya mere, ọ nwere elu nchekwa chọrọ na ntecha, ọgwụ ọjọọ eme ihe, nri, wdg Ọ na-ọtụtụ-eji na elu-ọgwụgwụ ubi.
Thicking usoro nke HPMC na ulo oru ngwaahịa
The ndim Njirimara nke HPMC bụ tumadi n'ihi na ya molekụla Ọdịdị na mmekọrịta nke ụmụ irighiri ihe na ngwọta. Mgbe HPMC na-etisasịwo na mmiri ma ọ bụ ihe mgbaze ndị ọzọ, agbụ ya macromolecular ga-emeghe ma na-etolite ike hydrogen bonds na van der Waals agha na ihe mgbaze ụmụ irighiri ihe, si otú na-amụba viscosity nke usoro. Na mgbakwunye, usoro netwọkụ nwere akụkụ atọ nke HPMC hibere na ngwọta bụkwa isi ihe na-eme ka arụmọrụ ya sie ike. A na-ejikọta ụdọ molekụla dị na ngwọta HPMC iji mepụta usoro netwọk, nke na-ebelata mmiri mmiri nke ngwọta ma si otú ahụ gosipụta viscosity dị elu.
Maka ọnọdụ ngwa dị iche iche, enwere ike gbanwee viscosity nke HPMC n'ụzọ ndị a:
Ndozi arọ molekụla: Viscosity nke HPMC na-adịkarị nha nha molekụla ya. Ibu ibu nke molekụla, nke ahụ ka viscosity nke ngwọta dị elu. Ya mere, site n'ịhọrọ HPMC ngwaahịa na dị iche iche molekul arọ, ngwọta na dị iche iche viscosities nwere ike nweta izute mkpa nke dị iche iche ụlọ ọrụ ngwaahịa.
Njikwa ogo nke nnọchi: Mmetụta na-emenye ọkụ nke HPMC nwekwara njikọ chiri anya na ogo nnọchi ya. Dị elu ogo nke nnọchi, ike na hydrophilicity na mma nke ndim mmetụta. Site n'ịchịkwa ogo nnọchi nke otu HPMC's methoxy na hydroxypropyl, enwere ike ịchịkwa njirimara viscosity ya nke ọma.
Mmetụta nke ngwọta ntinye uche: Ntụle nke HPMC na ngwọta na-emetụtakwa viscosity ya ozugbo. N'ikwu okwu n'ozuzu, ka ntinye uche nke ngwọta dị elu, ka viscosity dịkwuo ukwuu. Ya mere, site n'ịgbanwe ntinye nke HPMC, enwere ike nweta njikwa ziri ezi nke viscosity ngwọta.
Ebe ngwa na ndim mmetụta nke HPMC
Ihe owuwu ụlọ: A na-ejikarị HPMC eme ihe dị ka onye na-ahụ maka thickener na viscosity regulator na ngwa ngwa ndị sitere na ciment, ihe nkedo taịl, na ihe ndị na-edozi onwe ya na ihe ụlọ. Mmetụta ya na-eme ka ọ dịkwuo ukwuu na-eme ka njigide mmiri nke ihe ndị a dịkwuo mma, na-eme ka ọrụ ha dịkwuo mma, na-egbochi mgbawa ma ọ bụ nkwụsị. Karịsịa na gburugburu ebe okpomọkụ dị elu, HPMC nwere ike ịgbatị oge mmeghe nke ihe ahụ ma nwekwuo arụmọrụ ya.
Mkpuchi na agba: N'ime ụlọ ọrụ mkpuchi, a na-eji HPMC eme ihe dị ka onye na-agbapụta ihe na ihe nkwụsịtụ iji mee ka adhesion nke mkpuchi dịkwuo mma ma melite ọkwa ha na nkwụsị nke sag n'oge mkpuchi. N'otu oge ahụ, HPMC nwere ike inyere agba ahụ aka ịnọgide na-ekesa ihe dị n'otu, gbochie mmezi pigmenti, ma mee ka ihe nkiri mkpuchi ahụ dịkwuo nro ma dịkwuo edo.
Ọgwụ na ihe ịchọ mma: N'ime nkwadebe ọgwụ, a na-ejikarị HPMC chịkwaa ọnụego ntọhapụ nke ọgwụ, dị ka ihe mkpuchi mbadamba na shells capsule. Ngwongwo ya dị mma na-enyere aka melite nkwụsi ike nke ọgwụ ahụ ma gbasaa ogologo oge nke mmetụta ọgwụ. N'ihe ịchọ mma, a na-eji HPMC eme ihe na lotions, creams, conditioners na ngwaahịa ndị ọzọ iji mee ka viscosity na nkwụsi ike nke ngwaahịa ahụ dịkwuo elu ma na-eme ka mmetụta silky na mmetụta dị nro mgbe etinyere ya.
Ụlọ ọrụ nri: A na-ejikarị HPMC eme ihe na ụlọ ọrụ nri dị ka ihe na-eme ka ihe na-eme ka ahụ sie ike, karịsịa na ngwaahịa mmiri ara ehi, condiments, jelii na ihe ọṅụṅụ. Ngwongwo ya na-adịghị egbu egbu na enweghị isi na-eme ka ọ bụrụ ihe na-eme ka ọ dị mma ma bụrụkwa nke a pụrụ ịdabere na ya nke na-eme ka ọdịdị anụ ahụ na ọnụ nke nri dịkwuo mma.
HPMC aghọwo ihe dị mkpa ọtọ ihe na oge a ulo oru ngwaahịa n'ihi na ya magburu onwe thickening arụmọrụ na viscosity akara ike. Site ukpụhọde ya molekụla arọ, ogo nke nnọchi na ngwọta ịta, HPMC nwere ike izute viscosity chọrọ dị iche iche ulo oru ngwaahịa. N'otu oge ahụ, ihe ndị na-adịghị egbu egbu, nchekwa na gburugburu ebe obibi emewokwa ka a na-ejikarị ya na nri, ọgwụ na ihe ịchọ mma na mpaghara ndị ọzọ. N'ọdịnihu, na-aga n'ihu na ọganihu nke sayensị na nkà na ụzụ, ngwa ndapụta nke HPMC ga-abụ ihe sara mbara, na uru ya na viscosity akara na ndim arụmọrụ ga-nyochaa enyocha na tinye n'ọrụ.
Oge nzipu: Sep-25-2024