Waa maxay faraqa u dhexeeya HPMC iyo HEMC?

HPMC (Hydroxypropyl Methylcellulose) iyo HEMC (Hydroxyethyl Methylcellulose) waa labadoodaba derivatives cellulose kuwaas oo loo isticmaalo dhumucyada, xidhayaasha, iyo emulsifiers ee noocyo kala duwan oo alaab ah. Labaduba waxay ka soo jeedaan cellulose, polysaccharide dabiici ah oo laga helo dhirta.

Farqiga ugu weyn ee u dhexeeya HPMC iyo HEMC waa nooca hydroxypropyl iyo kooxaha hydroxyethyl ee ku dheggan molecule cellulose. HPMC waxay leedahay kooxo hydroxypropyl ah oo ku xidhan molecule cellulose, halka HEMC ay leedahay kooxaha hydroxyethyl. Kala duwanaanshahan nooca hydroxypropyl iyo kooxaha hydroxyethyl wuxuu saameeyaa sifooyinka labada nooc ee cellulose.

HPMC waa ku milmay biyaha qabow marka loo eego HEMC, wayna adkeysi badan u leedahay isbedelka heerkulka. Waxay leedahay viscosity ka sarreeya HEMC, waxayna aad ugu adkaysataa aashitada iyo alkali. Waxa kale oo ay aad ugu adkaysataa xaalufka microbial. HPMC waxa loo isticmaalaa badeecooyin kala duwan, oo ay ku jiraan cunto, dawooyinka, iyo waxyaalaha la isku qurxiyo.

HEMC way ku milmi yartahay biyaha qabow marka loo eego HPMC, wayna adkeysi yar u leedahay isbedelka heerkulka. Waxay leedahay viscosity hoose marka loo eego HPMC, wayna ka adkaysa yartahay aashitada iyo alkali. Sidoo kale way ka yar tahay adkaysiga xaalufka microbial. HEMC waxa loo isticmaalaa badeecooyin kala duwan, oo ay ku jiraan cuntada, daawooyinka, iyo waxyaalaha la isku qurxiyo.

Marka la soo koobo, HPMC iyo HEMC labaduba waa unugyo cellulose ah oo loo isticmaalo dhumucyada, xidhayaasha, iyo emulsifiers ee alaabooyin kala duwan. Farqiga ugu weyn ee u dhexeeya labada waa nooca hydroxypropyl iyo kooxaha hydroxyethyl kuwaas oo ku dheggan unugyada cellulose. HPMC waxay leedahay kooxo hydroxypropyl ah oo ku xidhan molecule cellulose, halka HEMC ay leedahay kooxaha hydroxyethyl. Kala duwanaanshahan nooca hydroxypropyl iyo kooxaha hydroxyethyl wuxuu saameeyaa sifooyinka labada nooc ee cellulose.