目录产品
描述
Polyvinyl alcohols (PVA, PVOH) are water-soluble resins of low toxicity. The water solubility primarily depends upon degree of hydrolysis of polyvinyl acetate. 88% hydrolyzed product have high degree of solubility, even in cold water, but for the complete dissolution heating to 85°C is required. Higher hydrolysis grade products require progressively more energy to dissolve because of their greater degree of crystallinity. For complete dissolution, these grades require heating to ~95°C.
88 mol% hydrolyzed Polydispersity ~1.9
Soluble in: DMSO, acetamide, glycols, DMF and water.- CAS#:
- 9002-89-5
- Molecular Weight:
- ~25,000
- Melting Point:
- >220°
- Tg:
- 85°
- Density:
- 1.29
- Viscosity:
- 4% AQ cps = 5.2-6.2%
- Soluble In:
- hot glycerol, hot glycols, hot water.
- Reference(s):
Reineke, J. et al. Can bioadhesive nanoparticles allow for more effective particle uptake from the small intestine? Journal of Controlled Release 170, 477–484 (2013). doi:10.1016/j.jconrel.2013.05.043
Inyang, H. I., Fodor, A., Bae, S. & Mbamalu, G. Polymer Solution–Clay Interaction Effects on Contaminant Barrier Material Integrity: Part I—Solution Characteristics. Environmental Engineering Science 26, 1541–1550 (2009). doi:10.1089/ees.2009.0006
- TSCA
-
- Hazards:
- Harmless-use normal precautions
- Handling:
- Exercise normal care
- Storage:
- Store at room temperature
- Code:
- A2g - (hazard/handling/storage codes)