Yintoni iPolyvinylpyrrolidone (PVP)?
Polyvinylpyrrolidone, ishunqulelwe njengePVP. I-Polyvinylpyrrolidone (PVP) i-polymer ye-polymer engabonakaliyo eyenziwa yi-polymerization ye-N-vinylpyrrolidone (NVP) phantsi kweemeko ezithile. Isetyenziswa njenge-adjuvant, i-adjuvant, kunye ne-excipient kwiinkalo ezininzi ezifana neyeza, i-textile, ikhemikhali, isiselo, kunye neekhemikhali zemihla ngemihla. Ngokweemfuno zemveliso, i-PVP inokohlulwa ibe ziindidi ezine: ibakala lemizi-mveliso, ibakala lokuthambisa, ibakala lokutya, kunye nebakala lamayeza. Ii-homopolymers, ii-copolymers, kunye neemveliso ze-polymer ezidityanisiweyo ezidityanisiweyo ezinobunzima bemolekyuli ukusuka kumawaka ukuya ngaphezulu kwesigidi esinye zisetyenziswe ngokubanzi ngenxa yeepropathi zazo ezigqwesileyo kunye nezohlukileyo.
I-PVP yahlulahlulwe yangamanqanaba amane ngokusekwe kumndilili wobunzima bemolekyuli, kwaye iqhele ukumelwa ngamaxabiso e-K. Amaxabiso e-K ahlukeneyo amele uluhlu oluhambelanayo lwe-avareji ye-molecular weight ye-PVP. Ixabiso le-K ngokwenene lixabiso leempawu ezinxulumene ne-viscosity ehambelana nesisombululo se-PVP samanzi, kunye ne-viscosity yinani lomzimba elinxulumene nobunzima be-molecular of polymers. Ngoko ke, ixabiso le-K lingasetyenziselwa ukubonakalisa ubunzima be-molecular ye-PVP. Ngesiqhelo, eliya lilikhulu ixabiso le-K, kokukhona liphezulu i-viscosity yayo kwaye yomelele ukuncamathela kwayo. Iintlobo eziphambili zeemveliso kunye neenkcukacha ze-PVP zingahlelwa ngamanqanaba e-viscosity ye-K-15, K17, K25, K-30, K60, kunye ne-K-90 ngokusekelwe kubunzima be-molecular.
I-UNILONG INDUSTRY inokubonelela ngoku kulandelayoI-PVP-Kiimveliso zothotho:
| UHLOBO | I-PVP K12 | I-PVP K15 | I-PVP K17 | PVP K25 | PVP K30 | PVP K60 | I-PVP K90 | |
| Imbonakalo | Umgubo omhlophe | |||||||
| Ixabiso le-K | 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 | |
| Ukungcola kwe-NVP enye (ukungacoceki 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 | |
| Amanzi % max | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | |
| Umxholo % min | 95 | 95 | 95 | 95 | 95 | 95 | 95 | |
| pH (5% yesisombululo esinamanzi) | 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 | |
| Isulfate ash% max | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
| Isiqulatho senitrogen ﹪ | 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 umxholo % 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 | |
| Intsimbi enzima ppm max | 10 | 10 | 10 | 10 | 10 | 10 | 10 | |
| IHydrazine ppm max | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Ihydrogen peroxide ppm max | 400 | 400 | 400 | 400 | 400 | 400 | 400 | |
I-PVP, njenge-synthetic water-soluble polymer compound, ineempawu eziqhelekileyo zamachiza e-polymer e-soluble yamanzi, kuquka ukukhuselwa kwe-colloid, ifilimu-ukwenza ifilimu, i-bonding, i-absorption yomswakama, i-solubilization okanye i-coagulation. Nangona kunjalo, olona phawu lwayo lwahlukileyo kukunyibilika kwayo okugqwesileyo kunye nokuhambelana komzimba, okuthe kwatsala umdla. Kwii-polymers zokwenziwa, i-PVP, enyibilikayo kumanzi kunye nakwizinyibilikisi ezininzi zendalo, inetyhefu ephantsi, kunye nokuhambelana kakuhle komzimba, ayibonwa ngokuqhelekileyo, ngakumbi kwimimandla esondelelene nempilo yabantu njengamayeza, ukutya, kunye nezinto zokuthambisa. Oku kulandelayo yintshayelelo ethile kwimimandla yesicelo sayo:
Kwintsimi yezithambiso zemihla ngemihla
Kwizinto zokuthambisa zemihla ngemihla, i-PVP kunye ne-copolymer ine-dispersibility enhle kunye nepropathi yokwenza ifilimu. I-PVP inokukhusela i-colloid kwi-lotion, kwaye ingasetyenziswa kwi-fat and non fat creams, njengokuseta ulwelo, isitshizi seenwele kunye ne-ejenti yokuseta i-mousse, i-hair conditioner sunscreen, i-shampoo foam stabilizer, i-agent setting agent, kunye ne-disperant yeenwele kunye ne-affinity agent. Ukongeza i-PVP kwikhrimu yekhephu, i-sunscreen, kunye neearhente zokususa iinwele kunokuphucula ukumanzisa kunye neziphumo zokuthambisa.
Indawo yokuhlamba
I-PVP ineempawu zokuchasa ukungcolisa kunye nemvula kwaye ingasetyenziselwa ukulungisa ulwelo olungafihliyo okanye izicoci ezinzima ezimdaka. Ukongeza i-PVP kwi-detergents kunesiphumo esihle sokulwa nokuguqulwa kombala kwaye kunokwandisa isakhono sokucoca. Xa uhlamba amalaphu, kunokuthintela i-synthetic detergents ekuthukutheliseni ulusu, ngakumbi imicu yokwenziwa. Lo msebenzi ubalasele ngakumbi kunezokucoca i-carboxymethyl cellulose (CMC). I-PVP inokudibaniswa ne-borax njengesithako esisebenzayo ekuqulunqweni kwe-phenolic disinfectant agents zokucoca. Isicoci esenziwe nge-PVP kunye ne-hydrogen peroxide sinemisebenzi yokucoca kunye nokubulala iintsholongwane.
Ukuprintwa kwe-textile kunye nokudaya
I-PVP inobudlelwane obuhle kunye needayi ezininzi zezinto eziphilayo kwaye inokudibanisa kunye ne-hydrophobic synthetic fibers ezifana ne-polyacrylonitrile, i-esters, i-nylon, kunye nezixhobo ze-fibrous ukuphucula amandla okudaya kunye ne-hydrophilicity. Emva kwe-PVP kunye ne-nylon yokufakela i-copolymerization, ilaphu elivelisiweyo liphucule ukuxhathisa ukufuma kunye nokuxhathisa ukufuma.
Iingubo kunye nee-pigments
Ipeyinti kunye neengubo ezifakwe kwi-PVP ziselubala ngaphandle kokuchaphazela umbala wazo wendalo, ukuphucula i-gloss kunye ne-dispersibility ye-coatings kunye ne-pigments, ukuphucula ukuzinza kwe-thermal, kunye nokuphucula ukuchithwa kwee-inki kunye neenki.
Intsimi yezonyango
I-PVP ine-inertness ye-physiological egqwesileyo, ayithathi nxaxheba kwi-metabolism yabantu, kwaye ine-biocompatibility egqwesileyo, engabangeli nakuphi na ukucaphuka kwesikhumba, i-mucosa, amehlo, njl njl. ingasetyenziselwa njenge-binder yeepilisi kunye ne-granules, i-solvent ye-injection, kunye ne-flow aid yee-capsules; I-Detoxifiers, izandisi, i-lubricants kunye ne-film-forming agents for eye drops, i-dispersants for formulations ye-liquid, i-stabilizers ye-enzymes kunye neziyobisi ze-thermosensitive, kwaye zinokusetyenziswa njengezigcini zokushisa okuphantsi. Isetyenziselwa iilensi zokudibanisa ukunyusa i-hydrophilicity yazo kunye nokuthambisa. Ukongeza, i-PVP ingasetyenziswa kwakhona njengombala kunye ne-X-ray yokuchasana; Ingasetyenziselwa iindlela ezahlukeneyo zedosi yamachiza anje ngeetafile, iigranules, kunye namanzi. Ine-detoxification, i-hemostasis, i-concentration yokwanda kwe-disolution, ukuthintela ukunamathela kwi-peritoneal, kunye nokukhuthaza izinga le-erythrocyte sedimentation. IPVP K30 isungulwe ngokusesikweni ngemvume yesebe lesizwe elilawula amayeza.
Ukulungiswa kokutya
I-PVP ngokwayo ayinayo i-carcinogenic kwaye inokhuseleko lokutya olulungileyo. Inokwenza ii-complexes ezineekhompawundi ezithile ze-polyphenolic (ezifana ne-tannins) kwaye zisetyenziswa ikakhulu njenge-ejenti yokucacisa kunye nokuzinzisa ekuqhubeni ukutya, okufana nebhiya, ijusi yeziqhamo, kunye newayini. I-PVP inokwenza ii-complexes ezineekhompawundi ezithile ze-polyphenolic (ezifana ne-tannins), ezidlala indima ecacileyo kunye ne-anticoagulant kwiziselo zejusi yeziqhamo. Ukusetyenziswa kwe-PVP edibeneyo kwibhiya kunye neziselo zeti kuxhaphake kakhulu. Izinto ze-polyphenolic kwibhiya zinokubopha kunye neeproteni kwibhiya ukwenza i-tannin macromolecular complexes, echaphazela kakhulu incasa yebhiya kwaye inciphise ubomi bayo beshelufu. I-polyvinylpyrrolidone edibeneyo (i-PVPP) inokutshiza nge-tannic acid kunye ne-anthocyanins kwibhiya, ngaloo ndlela icacisa ubhiya, iphucula ukuzinza kwayo yokugcina, kunye nokwandisa ubomi bayo beshelufu. Kwiziselo zetiyi, ukusetyenziswa kwe-PVPP kunokunciphisa ngokufanelekileyo umxholo we-tea polyphenols, kwaye i-PVPP ayihlali kwiziselo zeeti, okwenza ukuba isetyenziswe kwakhona kwaye inciphise kakhulu iindleko.
Iindawo eziphambili zesicelo se-PVP okwangoku zigxininiswe kwiikhemikhali zemihla ngemihla kunye namashishini amayeza, kwaye ukukhula kwala mashishini mabini kuya kuqhubeka nokuqhubela phambili imfuno ephambili yokusetyenziswa kwe-PVP kwixesha elizayo. Kwintsimi ekhulayo ye-PVP, kwi-lithium ibhetri ye-lithium, i-PVP ingasetyenziselwa njenge-dispersant ye-lithium ibhetri ye-electrodes kunye ne-processing aid for conductive materials; Kwishishini le-photovoltaic, i-PVP ingasetyenziselwa njenge-dispersant ukuvelisa umgangatho ophezulu we-spherical powder yesilivere ye-electrode yesilivere ecocekileyo, i-sheet-like powder powder ye-electrode negative paste yesilivere, kunye ne-nano particles yesilivere. Ngophuculo oluqhubekayo lwezinga lokungena kwebhetri ye-lithium kunye nokunyuka kwe-photovoltaic efakwe amandla, ezi zimbini eziphumayo ziya kuqhuba kakhulu imfuno ye-PVP.
Unilong ngumboneleli oqeqeshiweyo, kunye nePVP seriesiphuhliswe kwaye yaveliswa iminyaka elishumi. Ngotshintsho kwimarike, ukunikezelwa kweemveliso zePVP kunqongophala. Okwangoku, songeze imigca emibini yemveliso, kunye nobonelelo olwaneleyo kunye namaxabiso avumayo. Nceda uzive ukhululekile ukubuza.
Ixesha lokuposa: Dec-01-2023