These interactions are broken in the presence of an electrolyte like NaCl, leading to dissolution of the polymer.4,12 We suggest that the difference in the solubility in water of poly(sulphobetaine) and poly(carboxybetaine) could be caused by the stronger Coulombic interactions of N+−So3...
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: ...
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...
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
A new type of cationic polyelectrolyte with poly(ethylene oxide) (PEO) side-chains has been prepared by the spontaneous polymerization of 4-vinylpyridine i... A Mansri,Y Frère,C Chovino,... - 《Designed Monomers & Polymers》 被引量: 0发表: 2000年 Insights into bactericidal action of surf...
1. In a sheet-like structure of polyurethane, which is capable of absorbing water vapor and transmitting water vapor, with a uniformly incorporated additive, the improvement comprising that said additive is composed of solid particles of at least one modified starch ether or cellulose ether, whic...
100 mg of wet, centrifuged polyvinylpyridine microspheres (0.7.mu. in diameter) containing 20% AM and 20% BAM were stirred at room temperature for 4 hours with 10 cc hydrazine hydrate and then heated at 50 C with stirring for 2 hours. The microspheres were then washed with water. When te...
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 ...
Figure 4.Polymers derived from 1,5-hexadiene polymerization. Similarly, homopolymers ofcyclic olefins(e.g., polycyclopentene and polynorbornene (PNB),Figure 5) are characterized by extremely high melting points and low solubility in mostorganic solvents. Taken together, these properties ofcyclic olefin...
Particular preference is given to bases that are readily soluble in solvents that are used for the synthesis, e.g., N-methyl-pyrrolidone, and in water or water/alcohol mixtures, or those which are completely insoluble in the solvent, such as crosslinked polyvinylpyridine, for example. Suitable...