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Hydroxypropyl Methyl Cellulose (HPMC)
Hydroxypropyl methyl cellulose, faafaigofie le propyl methyl cellulose (HPMC hydroxypropylmethylcellulose, faapuupuuga), e tatau ona auai i se ituaiga o fefiloi non-ionic cellulose ether. Ose polymer semi-synthetic, inactive, viscoelastic e masani ona fa'aogaina i le ophthalmology e fai ma lubricant, po'o se mea e fa'aoga ai i vaila'au tu'u gutu, e masani ona maua i le tele o ituaiga o oloa. Hydroxypropyl cellulose e mafai ona faʻaaogaina e fai ma meaʻai faʻaopoopo, emulsifier, mafiafia, sui faʻamalolo ma sui gelatin manu.
MEA FAAMATALAGA Fa'aaliga Pa'u Pa'epa'e Temperature pala 200min Fua o le Fa'ailo 190-200 ℃ Viscosity 400 PH Taua 5~8 Malosi 1.39g/cm3 O le vevela o le carbonization 280-300 ℃ Ituaiga Tulaga taumafa Anotusi 99% Tete'e i luga 42-56dyne/cm mo 2% vaifofo vai -
Hydroxypropyl Methylcellulose (MHPC)
O le Hydroxypropyl methylcellulose (MHPC) e leai ni manogi, e leai se tofo, e le o'ona oona cellulose ethers o lo'o i ai vaega hyrdroxyl i luga o le filifili cellulose e suitulaga i se methoxy po'o le hydroxypropyl vaega e lelei le solubility vai. HPMC F60S o le maualuga-viscosity grade lea e faʻaaogaina e avea o se mafiafia, fusi, ma ata tifaga muamua i agrochemicals, coatings, ceramics, adhesives, inks, ma isi talosaga.
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Hydroxyethyl Cellulose (HEC)
Hydroxyethyl Cellulose(HEC) o se non-ionic, vai-soluble polymer maua mai cellulose e ala i se faasologa o kemikolo ma faiga faaletino. HEC o se paʻepaʻe i le samasama malamalama, e leai se manogi ma tofo le paʻu, faigofie ona solu i le vevela po o le vai malulu e fausia ai se viscous gel solution.When pH in solution 2 to 12, the solution is quite stable. Since HEC group is nonionic one in water solution, o le a le tali atu i isi anion po o cations ma le le mautonu i masima.
Ae o le HEC mole e mafai ona gaosia le esterification, etherification, o lea e mafai ai ona le mafai ona faʻaaogaina i le vai pe faʻaleleia ana meatotino. HEC foi e iai le lelei o le gaosiga o ata ma gaioiga i luga.
