Polyethylene Glycol/PEG/CAS:25322-68-3
Nkọwa Dị Mkpirikpi:
Aha Ngwaahịa: Polyethylene Glycol
CAS:25322-68-2
MF:(C2H4O)nH2O
MW:0
ỤDỊ:
Nkọwa:
Polyethylene glycols bụ ezinụlọ nke polima ndị dị larịị nke e ji ihe na-eme ka mmiri ghara ịdị ọcha mepụta site na mmeghachi omume condensation nke ntọala na-eme ka a na-agbakwunye otu ethylene oxide ugboro ugboro na ethylene. Usoro molekul bụ (C2H4O)multH2O ebe mult na-egosi ọnụọgụgụ nke otu oxyethylene. Ibu molekul nwere ike ịdị site na 200 ruo ọtụtụ nde kwekọrọ na ọnụọgụgụ otu oxyethylene. A na-akpọkwa ihe ndị dị arọ molekul dị elu (100 000 ruo 5 000 000) polyethylene oxides. Oke ibu molekul nke ngwaahịa polyethylene glycol ọ bụla kpọmkwem na-ada n'ime oke dị warara (°5%). Ọnụọgụ nke otu ethylene oxide ma ọ bụ ihe dị ka ibu molekul ha (dịka ọmụmaatụ, PEG-4 ma ọ bụ PEG-200) na-akọwakarị aha nke polyethylene glycols kpọmkwem. Polyethylene glycols nwere ibu amolecular na-erughị 600 bụ mmiri mmiri, ebe ndị dị arọ molekul 1000 na karịa siri ike. Ihe ndị a anaghị agbanwe agbanwe, mmiri na-agbaze, enweghị ụtọ, na enweghị isi. A na-agwakọta ha na mmiri, mmanya, esters, ketones, ihe na-esi ísì ụtọ, na hydrocarbons a kpụkọrọ akpụkọ, mana a na-eji alkanes, paraffin, waxes, na ether agwakọta ha.
Nkọwapụta
| ihe | Nkọwapụta |
| Ebe agbaze | 64-66 Celsius |
| Ebe isi mmiri | >250°C |
| Njupụta | 1.27 g/mL na 25 °C |
| Njupụta dị ukwuu | 400-500kg/m3 |
| Njupụta uzuoku | >1 (vs ikuku) |
| Nrụgide uzuoku | <0.01 mm Hg (20 °C) |
| Ndekọ Refractive | n20/D 1.469 |
| Okpomọkụ nchekwa. | 2-8°C |
Ojiji
Polyethylene Glycol bụ ihe na-ejikọ ihe, ihe mkpuchi, ihe na-agbasa ihe, ihe na-eme ka ihe na-esi ísì ụtọ, na ihe na-eme ka plastik dị ọcha nke bụ mmiri doro anya, enweghị agba, viscous, hygroscopic dị ka paraffin (ọcha, waxy, ma ọ bụ flakes), nwere ph nke 4.0–7.5 na 1:20. Ọ na-agbaze na mmiri (mw 1,000) na ọtụtụ ihe mgbaze organic.
Polyethylene glycol (PEG) bụ ihe na-ejikọ ihe, ihe na-agbaze ihe, ihe na-eme ka plastik dị nro, na ihe na-eme ka ọ dị nro nke ukwuu maka ude ịchọ mma na mmanụ ọgwụ. Pegs na-eme ka mmiri dị nro ruo ịdị arọ molekul nke 500. Karịa ibu a, mmiri ha na-abanye na-ebelata.
Ejiri ya na carbon black mepụta ihe mejupụtara ihe na-eduzi ihe.1 E jiri polymer nanospheres nke poly(ethylene glycol) mee ihe maka nnyefe ọgwụ.
Mkpụrụ ndụ Poly(ethylene Glycol) nke ihe dị ka monomers 2000. A na-eji Poly(ethylene Glycol) eme ihe n'ọtụtụ ụzọ site na kemistri ụlọ ọrụ ruo na kemistri bayọlọji. Nnyocha e mere n'oge na-adịbeghị anya egosila na PEG nwere ike inyere aka na mgbake mmerụ ahụ ọkpụkpụ azụ, na-enyere aka na usoro nduzi mkpali akwara n'ime anụmanụ. N'ime oke, egosila na ọ na-enyere aka n'ịrụzi axons sciatic a gbapụrụ agbapụ, na-enyere aka na mgbake mmebi akwara. A na-emepụta ya n'ụlọ ọrụ mmepụta ihe dị ka ihe na-eme ka mmanụ dị mma maka ọtụtụ ebe dị iche iche iji belata esemokwu. A na-ejikwa PEG eme ihe n'ịkwadebe sistemụ njem vesicle na iji ya na usoro nchọpụta ma ọ bụ usoro nnyefe ọgwụ.
Nkwakọ ngwaahịa na Mbupu
200KG/Drum ma ọ bụ dịka ihe ndị ahịa chọrọ.
Ọ bụ nke ngwongwo nkịtị ma nwee ike ibuga ya site n'oké osimiri na ikuku
Debe ma chekwaa
Ndụ nchekwa: ọnwa 24 site na ụbọchị emepụtara ya na ngwugwu mbụ e meghebeghị emepe echekwara n'ebe dị jụụ na kpọrọ nkụ nke na-anaghị anwụ kpọmkwem, mmiri.
Ụlọ nkwakọba ihe ikuku, Ọkụ dị ala, Nkewapụrụ na ihe ndị na-eme ka oxidants, asịd.
