Lub cev cov khoom ntawm PvP
Cov khoom lag luam PvP yog xim dawb lossis mis nyuj muaj txiaj ntsig zoo ib txwm muaj (n/}}}}}}}, thiab K -90}, Sawv cev ntawm cov roj molecular hnyav ntau ntawm 10, {}, {{{{}, {{{},} {{} rau daim tawv nqaij, thiab yog physiologically nyab xeeb .
Hauv cov qauv ntawm PvP, cov methylene pawg ntawm nws lub ntsiab thiab pyrophilic pab pawg neeg muaj zog, xws li alkanes, neeg raug tsim txom, esters, esters, ketones, thiab chlorinated hydrocarbons.}} nws tuaj yeem tsim ib qho kev hloov pauv kub, tab sis nws tuaj yeem tsim ib qho kev hloov pauv ntawm methanol, dej, dichhloromethane thiab chloroform . zaj duab xis yog kaj lug ntawm qee yam yeeb yaj kiab uas yog qhov tsis muaj peev xwm ua tau los ntawm PvP yog li 1}} Cov nyhuv dispersion tuaj yeem ua cov tshuaj pleev xim, raug tshem tawm, thiab emulsions nyob rau hauv kev daws qhov tusyees dissly thiab tswj ruaj khov; Cov nyhuv adsorption tau adsorbed ntawm ntau cov interfaces thiab txo cov interfacial nto nro kom nruj rau qee yam.
Tshuaj Kho Mob Ntawm Pvp
PVP's Tshwj Xeeb Molecular muaj pes tsawg leeg molecular muaj pes tsawg leeg thiab cov qauv tsis tsuas muab nws ntau cov khoom siv lub cev zoo, tab sis kuj muab qee cov tshuaj lom neeg {}}
Nyuaj
PVP cov qauv molecular muaj cov pab pawg polarity thiab cov pab pawg uas tuaj yeem ua rau nws muaj cov molec complexes nrog ntau cov tshuaj, tshwj xeeb yog cov tshuaj sib xyaw uas muaj hydroxyl, -carotene atoms, thiab lwm yam tshuaj, rov kho dua thiab ntau yam tshuaj sulfonamide.
Tshuaj Muaj Peev Xwm
Nyob rau hauv ib txwm muaj xwm txheej, khoom pvp yog heev ruaj khov {{}} kev hloov pauv ntawm lub xub ntiag 15}}}}}} hloov mus rau hauv insoluble cross-txuas pvp {{9} Taug kev sib tsoo, kev sib tsoo ntev yuav ua rau pvp kev cuam tshuam {}}
Acidity thiab alkalinity cuam tshuam rau kev ruaj ntseg ntawm pvp aqueous daws teeb meem yuav qhib thiab rhuav tshem cov qauv mvecular ntawm PVP .
Kev Nyab Xeeb Kev Nyab Xeeb Kev Nyab Xeeb
PVP muaj lub cev zoo sib xyaw ua ke, tsis koom nrog cov pab pawg ua haujlwm yooj yim zoo ib yam li cov qauv amino acte, uas ua rau qee qhov ntawm nws cov khoom zoo ib yam li cov protein, xws li cov dej solubility, muaj peev xwm ua kom muaj peev xwm ua rau qee yam ntawm cov khoom noj nag lossis nag lossis daus.
Kev txhim kho cov xwm txheej ntawm polyvinylprolidone styling polymers
Raws li thawj hluavtaws cob rau cov plaub hau styling,}} nws yog cov tshuaj ntsuab, yog li ntawd cov tshuaj txau cov plaub hau muaj cov huab point; Thib ob, PVP muaj cov yeeb yaj kiab zoo-tsim thiab cov duab ci ci rau cov neeg xav tau ntawm cov plaub hau styling tus neeg sawv cev thiab tuaj yeem tau yooj yim ntxuav nrog dej; Ib qho ntxiv, vim muaj cov pab pawg tau zoo ib yam li cov khoom siv hluav taws xob zoo nkauj, thiab tsis muaj kev nyab xeeb thiab muaj kev nyab xeeb thiab yog vim li cas los xij, thiab tsis muaj kuab lom Rigid thiab muaj qhov tsis tseem ceeb . Tsis muaj kev ua rau PvP, ua rau muaj kev nyab xeeb ntawm PvP, ua rau muaj kev nyab xeeb huab cua, ua rau muaj kev nyab xeeb ntawm pvp, kev ua yeeb yaj kiab zoo kom txo thiab poob nws lub peev xwm; Cov yeeb yaj kiab yog nkig, thiab cov hmoov nplej tau yooj yim tshaj plaws rau cov neeg ua haujlwm sib xyaw ua ke ntawm kev ua haujlwm ntawm PvP los ntawm kev qhia lwm tus monomers Muaj cov pab pawg hydrophobic thiab cov pab pawg hloov tau yooj yim tau dhau los ua cov kev tshawb fawb hauv tsev thiab txawv teb chaws. qhov tseem ceeb no yog qhov tseem ceeb hauv:
(1) Txhim kho cov dej noo tsis kam thiab tawv ntawm pvp homopolers thiab txhim kho cov kev ua tau zoo ntawm stying polymers.
(2) Muab cov ntawv luam tawm cov khoom tshiab xws li cov kab mob, zoo nkauj, yog li kom ua tiav lub hom phiaj ntau ntawm pvp series styling styling polymers.
(3) nthuav dav rau daim ntawv thov teb ntawm PVP thiab qhib tshiab txoj kev tshiab rau pvp daim ntawv thov .
Feem ntau hais lus, kev tshawb fawb ntawm Pvolymerization kev hloov kho ntawm PvP hauv tsev thiab lwm yam ntawm estonymerizes ntsev monomers .