He aha ka ʻokoʻa ma waena o HPMC a me HEMC?

ʻO ka HPMC (Hydroxypropyl Methylcellulose) a me HEMC (Hydroxyethyl Methylcellulose) nā mea ʻelua cellulose i hoʻohana ʻia e like me nā mānoanoa, nā mea hoʻopaʻa, a me nā emulsifier i nā huahana like ʻole.Loaʻa ʻia lāua ʻelua mai ka cellulose, kahi polysaccharide maoli i loaʻa i nā mea kanu.

ʻO ka ʻokoʻa nui ma waena o HPMC a me HEMC ke ʻano o nā hui hydroxypropyl a me hydroxyethyl i hoʻopili ʻia i ka mole cellulose.He mau pūʻulu hydroxypropyl ka HPMC i hoʻopili ʻia i ka mole cellulose, aʻo ka HEMC he pūʻulu hydroxyethyl i hoʻopili ʻia.ʻO kēia ʻokoʻa i ke ʻano o nā hui hydroxypropyl a me hydroxyethyl e pili ana i nā waiwai o nā derivatives cellulose ʻelua.

ʻOi aku ka hiki ke hoʻoheheʻe ʻia ka HPMC i ka wai anuanu ma mua o ka HEMC, a ʻoi aku ka pale ʻana i nā loli wela.He kiʻekiʻe ka viscosity ma mua o HEMC, a ʻoi aku ka paʻa i ka waikawa a me ka alkali.ʻOi aku ka pale ʻana i ka microbial degradation.Hoʻohana ʻia ka HPMC i nā huahana like ʻole, me ka meaʻai, nā lāʻau lapaʻau, a me nā mea hoʻonaninani.

ʻAʻole hiki ke hoʻoheheʻe ʻia ka HEMC i ka wai anuanu ma mua o ka HPMC, a ʻoi aku ka liʻiliʻi o ka pale ʻana i nā loli wela.He haʻahaʻa kona viscosity ma mua o ka HPMC, a ʻaʻole i kū i ka waika a me ka alkali.ʻAʻole kūʻē i ka microbial degradation.Hoʻohana ʻia ʻo HEMC i nā huahana like ʻole, me ka meaʻai, nā lāʻau lapaʻau, a me nā mea hoʻonaninani.

I ka hōʻuluʻulu ʻana, ʻo HPMC a me HEMC nā derivatives cellulose i hoʻohana ʻia e like me nā mānoanoa, nā mea hoʻopili, a me nā emulsifiers i nā huahana like ʻole.ʻO ka ʻokoʻa nui ma waena o nā mea ʻelua ʻo ia ke ʻano o nā hui hydroxypropyl a me hydroxyethyl i hoʻopili ʻia i ka mole cellulose.He mau pūʻulu hydroxypropyl ka HPMC i hoʻopili ʻia i ka mole cellulose, aʻo ka HEMC he pūʻulu hydroxyethyl i hoʻopili ʻia.ʻO kēia ʻokoʻa i ke ʻano o nā hui hydroxypropyl a me hydroxyethyl e pili ana i nā waiwai o nā derivatives cellulose ʻelua.