Polyvinylpyrrolidone (PVP) ke Eng?
Polyvinylpyrrolidone, e khutsufalitsoeng e le PVP. Polyvinylpyrrolidone (PVP) ke motsoako oa polymer o seng oa ionic o hlahisoang ke polymerization ea N-vinylpyrrolidone (NVP) tlas'a maemo a itseng. E sebelisoa e le motlatsi, tlatsetso, le excipient mafapheng a mangata joalo ka meriana, masela, lik'hemik'hale, seno le lik'hemik'hale tsa letsatsi le letsatsi. Ho latela litlhoko tsa sehlahisoa, PVP e ka aroloa ka mefuta e mene: boemo ba indasteri, kereiti ea litlolo, boemo ba lijo, le sehlopha sa meriana. Li-homopolymers, li-copolymers, le lihlahisoa tsa li-polymer tse amanang le sefapano tse nang le boima ba limolek'hule tse tlohang ho likete ho isa ho tse fetang milione e le 'ngoe li sebelisitsoe haholo ka lebaka la thepa ea tsona e ntle le e ikhethang.
PVP e arotsoe ka mekhahlelo e mene ho latela karolelano ea boima ba molek'hule, 'me hangata e emeloa ke litekanyetso tsa K. Litekanyetso tse fapaneng tsa K li emela palo e lekanang ea boima ba limolek'hule tsa PVP. Boleng ba K ha e le hantle ke boleng bo amanang le viscosity e lekanyelitsoeng ea tharollo ea metsi ea PVP, 'me viscosity ke bongata ba' mele bo amanang le boima ba limolek'hule tsa li-polymers. Ka hona, boleng ba K bo ka sebelisoa ho khetholla boima bo tloaelehileng ba limolek'hule tsa PVP. Ka tloaelo, ha boleng ba K bo le boholo, bo phahamisa viscosity ea eona le ho tiisa ho khomarela ha eona. Mefuta ea mantlha ea sehlahisoa le litlhaloso tsa PVP li ka aroloa ka maemo a viscosity a K-15, K17, K25, K-30, K60, le K-90 ho ipapisitsoe le boima ba limolek'hule.
UNILONG INDUSTRY e ka fana ka tse latelangPVP-Klihlahisoa tsa letoto:
| MOFUTA | PVP K12 | PVP K15 | PVP K17 | PVP K25 | PVP K30 | PVP K60 | PVP K90 | |
| Ponahalo | Phofo e tšoeu | |||||||
| K Boleng | 10.2-13.8 | 12.75-17.25 | 15.3-18.36 | 22.5-27.0 | 27-32.4 | 54-64.8 | 81-97.2 | |
| NVP ho se hloeke ha 'mino (ho se hloeke A) | (CP2005/USP26) % max | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| (USP31/EP6/BP2007) ppm max | 10 | 10 | 10 | 10 | 10 | 10 | 10 | |
| Metsi % max | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | |
| Content % min | 95 | 95 | 95 | 95 | 95 | 95 | 95 | |
| pH (5% tharollo e nang le metsi) | 3.0-5.0 | 3.0-5.0 | 3.0-5.0 | 3.0-5.0 | 3.0-5.0 | 4.0-7.0 | 4.0-7.0 | |
| Sulfate ash% max | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
| Lintho tse nang le naetrojene | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | 11.5-12.8 | |
| 2-P content % max | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | |
| Aldehyde ppm max | 500 | 500 | 500 | 500 | 500 | 500 | 500 | |
| Boima ba tšepe ppm max | 10 | 10 | 10 | 10 | 10 | 10 | 10 | |
| Hydrazine ppm max | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Hydrogen peroxide ppm max | 400 | 400 | 400 | 400 | 400 | 400 | 400 | |
PVP, e le motsoako oa polymer o entsoeng ka metsi, o na le lisebelisoa tse akaretsang tsa metsoako ea polymer e qhibilihang ka metsing, ho akarelletsa le tšireletso ea colloid, filimi-forming, bonding, absorption ea mongobo, solubilization kapa coagulation. Leha ho le joalo, tšobotsi ea eona e ikhethang ka ho fetisisa ke ho qhibiliha ha eona ho babatsehang le ho lumellana ha 'mele, tse hohetseng tlhokomelo. Ho li-polymers tsa maiketsetso, PVP, e qhibilihang ka metsing le ka bongata ba metsoako ea lintho tse phelang, e na le chefo e tlaase, 'me e lumellana hantle le fisioloji, ha e tloaelehe ho bonoa, haholo-holo masimong a amanang haufi-ufi le bophelo ba batho joalo ka meriana, lijo le litlolo. Se latelang ke selelekela se ikhethileng libakeng tsa ts'ebeliso ea eona:
Lefapheng la litlolo tsa letsatsi le letsatsi
Litlolong tsa letsatsi le letsatsi, PVP le copolymer li na le thepa e ntle ea dispersibility le ea ho etsa lifilimi. PVP e ka sireletsa colloid ka lotion, 'me e ka sebelisoa ka litlolo tse mafura le tse se nang mafura, e le mokelikeli oa ho beha, moriri oa moriri le mousse setting agent, hair conditioner sunscreen, shampoo foam stabilizer, wave setting agent, le dispersant dae ea moriri le moemeli oa kamano. Ho kenyelletsa PVP ho tranelate ea lehloa, setlolo se sireletsang letsatsi, le lisebelisoa tsa ho tlosa moriri ho ka ntlafatsa litlamorao tsa ho koloba le ho tlotsa.
Tšimo ea ho hlatsoa
PVP e na le thepa e thibelang ho silafala ha metsi le ho na pula hape e ka sebelisoa ho lokisa maro a bonaletsang kapa lihlapa tse boima tse silafatsang. Ho kenyelletsa PVP ho li-detergent ho na le phello e ntle ea anti discoloration 'me ho ka ntlafatsa bokhoni ba ho hloekisa. Ha u hlatsoa masela, e ka thibela li-detergents tsa maiketsetso hore li se ke tsa senya letlalo, haholo-holo li-synthetic fibers. Ts'ebetso ena e ipabola ho feta li-detergents tsa carboxymethyl cellulose (CMC). PVP e ka kopanngoa le borax e le motsoako o sebetsang ha ho etsoa li-phenolic disinfectant agents. Sehlapa se entsoeng ka PVP le hydrogen peroxide se na le mesebetsi ea ho soeufatsa le ho bolaea libaktheria.
Ho hatisa le ho daea masela
PVP e na le kamano e ntle le lidae tse ngata tsa tlhaho 'me e ka kopana le likhoele tsa maiketsetso tsa hydrophobic tse kang polyacrylonitrile, esters, nylon, le lisebelisoa tsa fibrous ho ntlafatsa matla a ho daea le hydrophilicity. Ka mor'a hore PVP le nylon grafting copolymerization, lesela le hlahisitsoeng le ntlafatse ho hanyetsa mongobo le ho hanyetsa mongobo.
Liaparo le li-pigments
Lipente le liphahlo tse koahetsoeng ka PVP li hlakile ntle le ho ama 'mala oa tsona oa tlhaho, ho ntlafatsa khanya le ho senyeha ha liphahlo le li-pigments, ho matlafatsa botsitso ba mocheso, le ho ntlafatsa ho senyeha ha li-inks le li-inks.
Lekala la bongaka
PVP e na le boits'oaro bo botle ba 'mele, ha e kenye letsoho metabolism ea motho,' me e na le biocompatibility e babatsehang, e sa bakoeng ke ho teneha ha letlalo, mucosa, mahlo, joalo-joalo. PVP ea PVP ea bongaka ke e 'ngoe ea li-excipients tse tharo tse kholo tsa meriana tse buelloang linaheng tse ling. e ka sebelisoa e le se tlamang matlapa le li-granules, co solvent bakeng sa liente, le thuso ea phallo bakeng sa li-capsules; Li-detoxifiers, li-extender, lubricant le li-film-forming agents bakeng sa marotholi a mahlo, li-dispersants bakeng sa metsoako ea metsi, li-stabilizers bakeng sa li-enzyme le lithethefatsi tse thermosensitive, hape li ka sebelisoa e le li-preservatives tsa mocheso o tlase. E sebelisoa bakeng sa lilense tsa ho ikopanya ho eketsa hydrophilicity ea tsona le lubricity. Ho phaella moo, PVP e ka boela ea sebelisoa e le motsoako oa mebala le X-ray; E ka sebelisoa bakeng sa mefuta e fapaneng ea litekanyetso tsa lithethefatsi joalo ka matlapa, granules le metsi. E na le detoxification, hemostasis, ho eketseha ha khatello ea maikutlo, ho thibela ho khomarela peritoneal, le ho khothalletsa sekhahla sa erythrocyte sedimentation. PVP K30 e thakgotswe semmuso ka tumello ya lefapha la naha la taolo ya meriana.
Ho lokisa lijo
PVP ka boeona ha e na carcinogenic mme e na le polokeho e ntle ea lijo. E ka etsa li-complexes tse nang le metsoako e khethehileng ea polyphenolic (joalo ka tannins) 'me e sebelisoa haholo-holo e le ntho e hlakisang le ho tsitsisa ha ho etsoa lijo, joalo ka biri, lero la litholoana le veine. PVP e ka etsa li-complexes tse nang le metsoako e itseng ea polyphenolic (e kang tannins), e bapalang karolo e hlakileng le ea anticoagulant linong tsa lero la litholoana. Ts'ebeliso ea PVP e hokahaneng ka har'a lino tsa biri le tee e atile haholo. Lintho tse nang le polyphenolic ka biri li ka tlamahanngoa le liprotheine tse ka biri ho etsa li-tannin macromolecular complexes, tse amang tatso ea biri haholo le ho khutsufatsa bophelo ba eona. Crosslinked polyvinylpyrrolidone (PVPP) e ka chelate ka tannic acid le anthocyanins ka biri, ka hona ea hlakisa biri, ea ntlafatsa botsitso ba eona ba polokelo, le ho lelefatsa sethala sa eona sa bophelo. Lijong tsa tee, tšebeliso ea PVPP e ka fokotsa ka nepo litaba tsa tee ea polyphenols, 'me PVPP ha e lule e le linong tsa tee, e etsa hore e sebelisoe hape le ho fokotsa litšenyehelo haholo.
Libaka tse ka sehloohong tsa ts'ebeliso ea PVP hajoale li tsepamisitsoe indastering ea letsatsi le letsatsi ea lik'hemik'hale le tsa meriana, 'me kholo ea liindasteri tsena tse peli e tla tsoela pele ho tsamaisa tlhokahalo e kholo ea tšebeliso ea PVP nakong e tlang. Lefapheng le hlahang la PVP, indastering ea betri ea lithium, PVP e ka sebelisoa e le dispersant bakeng sa li-electrode tsa lithium battery le thuso ea ho sebetsa bakeng sa thepa ea conductive; Indasteri ea photovoltaic, PVP e ka sebelisoa e le dispersant ho hlahisa boleng bo phahameng ba spherical silver powder bakeng sa pente ea silevera e ntle ea electrode, phofo e kang lakane ea silevera bakeng sa pente ea silevera e mpe ea electrode, le likaroloana tsa silevera tsa nano. Ka ntlafatso e tsoelang pele ea sekhahla sa ho kenella ha betri ea lithium le keketseho ea matla a kentsoeng a photovoltaic, masimo ana a mabeli a hlahang a tla tsamaisa tlhokahalo ea PVP haholo.
Unilong ke mofani oa litsebi, le hoLetoto la PVPe 'nile ea ntlafatsoa le ho hlahisoa ka lilemo tse leshome. Ka liphetoho tse teng 'marakeng, phepelo ea lihlahisoa tsa PVP e haella. Hajoale, re kentse mela e meng e 'meli ea tlhahiso, ka phepelo e lekaneng le litheko tse ntle. Ka kopo ikutloe u lokolohile ho botsa.
Nako ea poso: Dec-01-2023