Polyethylene Glycol/Peg/CAS:25322-68-3
Tsananguro pfupi:
Zita rechigadzirwa: Polyethylene Glycol
CAS:25322-68-2
MF:(C2H4O)nH2O
MW:0
MAUMBIRWO:
Tsanangudzo:
Polyethylene glycols imhuri yemapolymers akaumbwa ne base-catalyzed condensation reaction ne repeating ethylene oxide units inowedzerwa mu ethylene. Iyo molecular formula ndiyo (C2H4O)multH2O apo mult inomiririra avhareji yehuwandu hwemapoka e oxyethylene. Kurema kwemamolecular kunogona kubva pa200 kusvika mamiriyoni akati wandei zvichienderana nehuwandu hwemapoka e oxyethylene. Zvinhu zvine uremu hwepamusoro (100 000 kusvika 5 000 000) zvinonziwo polyethylene oxides. Avhareji yehuremu hwemamolecular yechero chigadzirwa che polyethylene glycol inowira mukati memiganhu yakamanikana (°5%). Huwandu hwemayuniti e ethylene oxide kana huremu hwawo hwemamolecular (semuenzaniso, PEG-4 kana PEG-200) inowanzo ratidza mazita emapolyethylene glycols chaiwo. Polyethylene glycols ine huremu hwe amolecular pasi pe600 imvura, nepo iyo yehuremu hwemamolecular 1000 zvichikwira yakasimba. Izvi zvinhu hazvichinji, hazvinyungudike mumvura, hazvina kunaka, uye hazvina hwema. Zvinosanganiswa nemvura, maalcohols, maesters, maketones, zvinonyungudutsa zvinonhuhwirira, uye mahydrocarbon ane chlorine, asi hazvisanganisike nealkanes, paraffins, waxes, uye ethers.
Tsanangudzo
| Chinhu | Tsanangudzo |
| Nzvimbo yekunyunguduka | 64-66 °C |
| Pokufashaira | >250°C |
| Kuwanda kwevanhu | 1.27 g/mL pa25 °C |
| Kuwanda kwehuwandu | 400-500kg/m3 |
| Kuwanda kwemhepo | >1 (zvichienderana nemhepo) |
| Kumanikidzwa kwemhepo | <0.01 mm Hg (20 °C) |
| Indekisi yeRefractive | n20/D 1.469 |
| Tembiricha yekuchengetera. | 2-8°C |
Kushandiswa
Polyethylene Glycol chinhu chinosunga, chinofukidza, chinoparadzira, chinobatsira pakunakirwa, uye chinoisa purasitiki, chiri mvura yakajeka, isina ruvara, ine viscous, ine hygroscopic yakafanana neparaffin (chena, ine wakisi, kana kuti flakes), ine ph ye4.0–7.5 muhuwandu hwe1:20. Inonyungudika mumvura (mw 1,000) uye mune zvakawanda zvinonyungudutsa.
Polyethylene glycol (PEG) chinhu chinosunga, chinonyungudutsa, chinoisa purasitiki, uye chinonyorovesa chinoshandiswa zvakanyanya pakugadzira mafuta ekuzora uye mafuta emishonga. Mapegi ane huremu hunosvika 500. Kupfuura huremu uhwu, kutorwa kwawo nemvura kunoderera.
Inoshandiswa pamwe chete nekabhoni dema kugadzira chinhu chinofambisa mhepo.1 Polymer nanospheres yepoly(ethylene glycol) yakashandiswa pakutumira mishonga.
Mamorekuru ePoly(ethylene Glycol) ane mamonomer angangoita 2000. Poly(ethylene Glycol) inoshandiswa mukushandiswa kwakasiyana-siyana kubva kumakemikari eindasitiri kusvika kumakemikari ebhayoloji. Tsvagiridzo ichangoburwa yakaratidza kuti PEG ine kugona kwekubatsira kukuvara kwemusana, ichibatsira kufambisa tsinga mumhuka. Mumakonzo, yakaratidzwa kuti inobatsira mukugadzirisa sciatic axons dzakachekwa, ichibatsira mukudzoka kwekukuvara kwetsinga. Inogadzirwa mumaindasitiri sechinhu chinozora panzvimbo dzakasiyana-siyana kuderedza kukweshana. PEG inoshandiswawo mukugadzirira masisitimu ekutakura ma vesicle pamwe nekushandiswa mukuongorora kana nzira dzekutumira mishonga.
Kurongedza uye Kutumira
200KG/Drum kana zvichienderana nezvinodiwa nevatengi.
Ndezvezvinhu zvakajairika uye zvinogona kutumirwa negungwa nemhepo
Chengeta uye chengeta
Nguva yesherufu: Mwedzi makumi maviri nemana kubva pazuva rekugadzirwa kwayo, yakachengetwa munzvimbo inotonhorera yakaoma isina chiedza chezuva, mvura.
Imba yekuchengetera zvinhu ine mhepo, Inoomesa zvinhu zvishoma, Yakaparadzaniswa nezvinokonzera makemikari, maasidhi.
