Drying: water may be removed from the polymer with toluene or other solvents that form water azeotropes. Analysis of Reagent Purity: aqueous titration with acid; Reillex 402 has 8.8 mequiv/g H + capacity and Reillex 425 has 5.5 mequiv/g H + capacity. Handling, Storage, and Precautions: ...
英文名称:Poly(4-vinylpyridine) 分子式:(C7H7N)n 产地:进口 包装规格:25g 品牌:Sigma 货号:472352 CAS编号:25232-41-1 客户专员:刘小姐 产品名称:Sigma|472352|25232-41-1|聚(4-乙烯吡啶)|Poly(4-vinylpyridine) 包装 25 g in poly bottle
General DescriptionPoly(4-vinylpyridine) (PVP) is a pyridine containing polymer that is used in the surface modification by immobilizing the atoms present on the surface. Solubility in organicsMineral acids to a molecular equivalence; (3% solution or greater) in acetic acid and lower alcohols; Inso...
in aqueous solutions. The flexible chains of P4VP may act as a stabilizing agent when wrapped around the MWCNT or GR, preserving its intrinsic electrical and mechanical properties and also rendering their solubility in water, ethanol anddimethylformamide(DMF). Furthermore, P4VP can easily be ...
210 Also, oleophilic poly(divinylbenzene)-coated oxides, such as Al(OH)3, SiO2 and Al2O3, were prepared by preadsorption of vinyl coupling agents, such as 4-vinylpyridine or vinylpyrrolidone, and subsequent radical copolymerization of divinylbenzene with the adsorbed 4-vinylpyridine or ...
Influence of initiator in controlled radical polymerization using nitroxide capping: the case of N,N-dimethylacrylamide.: synthesis of block copolymers of 4-vinylpyridine and N,N-dimethylacrylamide. Euro. Polym. J. 37, 33–37 (2001). 33 Tsuboi, T., Murayama, H., Yeh, S. J. & Chen, C....
The AIBN-initiated copolymerization was found to strongly favor the 4-vinylpyridine monomer in the copolymer composition. This was confirmed by viscosity measurements with a linear relationship between the reduced viscosity and the comonomer content. Interactions and complexation of the water-soluble ...
3.Then multiblock copolymers was obtained by condensingpolyoxyethyleneand poly(2 vinylpyridine)with dichloromethane in the presence of potassium hydroxide.α-甲基萘锂作为引发剂利用阴离子聚合得到 2 乙烯基吡啶的遥爪双羟基低聚物 (P2VP) ,然后以二氯甲烷作偶联剂与聚环氧乙烷(PEO)反应制备P2VP和PEO多嵌段共聚物...
Cross-linked polyvinylpyridine–graft–polyacrylamide was prepared successfully by grafting from quaternized P4-VP- (210–420 μm). Quaternization was performed with chloroacetic acid. At the end of reaction carboxylic acid content of the product was found as 2.2 mmol g−1. Finally, poly (acrylam...
Chart 4: The compatibility of PVP and some other substances in water and ethanol Chart 5: The solubility and compatibility of PVP in various solvents SafetyPVP is physiologically inert. Acute oral toxicity of PVP: LD50 > 100g/kg. It does not irritate the skin or eyes, do not cause skin ...