Adsorption characteristics of water-soluble polymers. I. Poly(vinyl alcohol) and poly(vinylpyrrolidone) at the aqueous-air interface

1968 ◽  
Vol 72 (13) ◽  
pp. 4450-4458 ◽  
Author(s):  
J. E. Glass
Keyword(s):  
Vinyl Alcohol ◽  
Water Soluble ◽  
Poly Vinyl Alcohol ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Adsorption Characteristics ◽  
Air Interface

scholarly journals New Polymers for Needleless Electrospinning from Low-Toxic Solvents

Nanomaterials ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 52 ◽  
Author(s):  
Martin Wortmann ◽  
Natalie Frese ◽  
Lilia Sabantina ◽  
Richard Petkau ◽  
Franziska Kinzel ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
New Technology ◽  
Acrylonitrile Butadiene Styrene ◽  
Water Soluble ◽  
Poly Vinyl Alcohol ◽  
Fiber Morphology ◽  
Water Soluble Polymers ◽  
Wide Range ◽  
Solvent Additive ◽  
Low Toxic

Electrospinning is a new technology whose scope is gradually being developed. For this reason, the number of known polymer–solvent combinations for electrospinning is still very low despite the enormous variety of substances that are potentially available. In particular, electrospinning from low-toxic solvents, such as the use of dimethyl sulfoxide (DMSO) in medical technology, is rare in the relevant scientific literature. Therefore, we present in this work a series of new polymers that are applicable for electrospinning from DMSO. From a wide range of synthetic polymers tested, poly(vinyl alcohol) (PVOH), poly(2ethyl2oxazolene) (PEOZ), and poly(vinylpyrrolidone) (PVP) as water-soluble polymers and poly(styrene-co-acrylonitrile) (SAN), poly(vinyl alcohol-co-ethylene) (EVOH), and acrylonitrile butadiene styrene (ABS) as water-insoluble polymers were found to be suitable for the production of nanofibers. Furthermore, the influence of acetone as a volatile solvent additive in DMSO on the fiber morphology of these polymers was investigated. Analyses of the fiber morphology by helium ion microscopy (HIM) showed significantly different fiber diameters for different polymers and a reduction in beads and branches with increasing acetone content.

Synthesis of nanocomposites: Organoceramics

1992 ◽  
Vol 7 (9) ◽  
pp. 2599-2611 ◽  
Author(s):  
Phillip B. Messersmith ◽  
Samuel I. Stupp
Keyword(s):  
Vinyl Alcohol ◽  
Water Soluble ◽  
Polymer Chains ◽  
Poly Vinyl Alcohol ◽  
Synthetic Approach ◽  
New Materials ◽  
Water Soluble Polymers ◽  
Homogeneous Solutions ◽  
New Processing ◽  
Diffuse Reflectance Infrared

We report here on the synthesis of new materials termed organoceramics in which polymers are molecularly dispersed within inorganic crystalline phases. These nanocomposite materials may not only have unique morphologies and physical properties but may also lead to new processing methods for ceramic-based materials. In organoceramics polymer molecules could opportunistically occupy sites such as grain boundaries or other two-dimensional defects, nanopores, lattice channels, or interlamellar spaces. Our synthetic approach to get macromolecules to those sites is to nucleate and grow inorganic crystals from homogeneous solutions containing the polymer chains as co-solutes. The new materials discussed in this manuscript were synthesized by growing calcium aluminate crystals in the presence of water soluble polymers and were characterized by x-ray diffraction, scanning electron microscopy, elemental analysis, and diffuse reflectance infrared spectroscopy. The macromolecules used in organoceramic synthesis included poly(vinyl alcohol), poly(dimethyldiallyl ammonium chloride), and poly(dibutyl ammonium iodide). We found that the chemistry of polymer repeats can impact on the spatial distribution of the dispersed organic chains and also on the morphology of organoceramic powders. In the case of the poly(vinyl alcohol) organoceramic the polymer is intercalated in “flattened” conformations in Ca2Al(OH)6[X] ·nH2O, thus increasing the distance between ionic layers from 7.9 Å to ∊ 18 Å (X is a monovalent or divalent anion). Such a layered nanocomposite can be formed only by intercalating the poly(vinyl alcohol) during growth of the Ca2Al(OH)6[X] · nH2O crystal. The synthetic pathway is therefore able to overcome large entropic barriers and incorporate significant amounts of polymer in the organoceramic product, in some cases up to 38% by weight. The particles of this nanocomposite are spheroidal aggregates of thin plate crystals whereas the use of a polycationic polymer in the synthesis leads to rod-like particles in which organic chains may reside in channels of the inorganic crystal.

Molecular Layer Processing of Polyaniline via the Use of Hydrogen Bonding Interactions

1994 ◽  
Vol 369 ◽  
Author(s):  
William B. Stockton ◽  
Michael F. Rubner
Keyword(s):  
Hydrogen Bonding ◽  
Molecular Layer ◽  
Multilayer Films ◽  
Water Soluble ◽  
Vinyl Pyrrolidone ◽  
Poly Vinyl Alcohol ◽  
Layer By Layer ◽  
Mixed Solution ◽  
Water Soluble Polymers ◽  
Soluble Polymers

AbstractMolecular layer-by-layer build-up on a variety of substrates is demonstrated for doped polyaniline (PAn) alternating with non-ionic water soluble polymers. The adsorption is enabled by the strong interchain interactions with PAn, such as hydrogen bonding. Multilayer build-up has been demonstrated with four distinctly different non-ionic water soluble polymers: poly(vinyl pyrrolidone) (PVP), poly(vinyl alcohol) (PVA), poly(acrylamide) (PAAm), and poly(ethylene oxide) (PEO). Thus, non-ionic water soluble polymers containing a wide variety of functional groups such as amide, hydroxyl or ether groups can be used to successfully fabricate multilayer thin films with polyaniline. FTIR spectroscopy measurements show the PAn to be hydrogen bonded in these multilayer films. Conductivities for multilayer films are on the order of 1-4 S/cm for films doped with methane sulfonic acid. Conductivities on the order of 0.1 S/cm can be achieved for a single mixed layer self-assembled from a mixed solution of PAn/PVP or PAn/PAAm.

Effect of Water Soluble Polymers on Radiation Vulcanized Natural Rubber Latex Films

1999 ◽  
Vol 72 (2) ◽  
pp. 308-317 ◽  
Author(s):  
Siby Varghese ◽  
Yosuke Katsumura ◽  
Keizo Makuuchi ◽  
Fumio Yoshi
Keyword(s):  
Natural Rubber Latex ◽  
Water Soluble ◽  
Poly Vinyl Alcohol ◽  
Radiation Processing ◽  
Soluble Polymer ◽  
Water Soluble Polymer ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Drastic Increase ◽  
Poly Ethylene

Abstract Technological properties of radiation vulcanized latex after mixing with water soluble polymers (WSP) such as poly(vinyl alcohol), poly(ethylene oxide) etc. have been studied in detail. The properties of water soluble polymer incorporated vulcanizates depend mainly on the type of the polymer blended into the latex. Most of the polymers showed a drastic increase in tear strength with polymer content and a reduction in tackiness of the vulcanized films. Radiation processing increases the water soluble protein content in the serum phase whereas that in the rubber phase decreases. Addition of water soluble polymer causes the fast leaching of soluble proteins from the dried films, which reduces the prolonged leaching commonly adopted for rubber vulcanizates. Aging properties of radiation vulcanized films incorporated with water soluble polymers are excellent. The thermal degradation behavior of radiation vulcanized films and that of water soluble polymer incorporated films is almost the same. Transparency of the rubber films can be increased by the addition of suitable water soluble polymers.

New quenching media based on water-soluble polymers

1981 ◽  
Vol 23 (2) ◽  
pp. 104-106 ◽  
Author(s):  
A. V. Tolstousov ◽  
O. A. Bannykh
Keyword(s):  
Water Soluble ◽  
Water Soluble Polymers ◽  
Soluble Polymers ◽  
Quenching Media
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