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45 Newest Publications in journal of polymer science: polymer symposia

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Quantitative evaluation of the ion‐binding characteristics of poly(4′‐vinylbenzo‐18‐crown‐6)

08-Mar-2007 | Cindy C. Chen, Thomas W. Smith, Journal of Polymer Science: Polymer Symposia, 2007

Abstract We have carried out an in‐depth study of the alkali metal ion binding characteristics of a model ionophoric macromolecule, poly(4′‐vinylbenzo 18‐crown‐6), P18C6. Ion selective electrode potentiometry has been utilized to determine stability constants for complexstion of K+, Na+, and ...

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Optically active poly(diphenyl‐2‐pyridylmethyl methacrylate): Asymmetric synthesis, stability of helix, and chiral recognition ability

01-Jan-1986 | Okamoto, Yoshio; Mohri, Haruhiko; Motoshiishikura; Hatada, Koichi; Yuki, Heimei, Journal of Polymer Science: Polymer Symposia, 1986

Abstract Dipheny‐2‐pyridylmethyl methacrylate (D2PyMA) was anionically polymerized with several organolithium complexes of chiral ligands such as (‐)‐sparteine (Sp), (S,S)‐( + )‐ and (R,R)‐(‐)‐2,3‐dimethoxy‐1,4‐bis(dimethylamino)butane [(+)‐ and (‐ )‐DDB], (S)‐(‐)‐1 ‐ ...

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Quantitative evaluation of the ion‐binding characteristics of poly(4′‐vinylbenzo‐18‐crown‐6)

01-Jan-1986 | Chen, Cindy C.; Smith, Thomas W., Journal of Polymer Science: Polymer Symposia, 1986

Abstract We have carried out an in‐depth study of the alkali metal ion binding characteristics of a model ionophoric macromolecule, poly(4′‐vinylbenzo 18‐crown‐6), P18C6. Ion selective electrode potentiometry has been utilized to determine stability constants for complexstion of K+, Na+, and ...

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Synthesis and characterization of main‐chain polyaminimides

01-Jan-1986 | Salamone, J. C.; Richard, R. E.; Watterson, A. C., Journal of Polymer Science: Polymer Symposia, 1986

Abstract Three novel main‐chain polyarninimides were prepared containing rigid and/or flexible groups within the backbone. The polymer precursors were initially synthesized from bis‐dimethylhydrazides and dihalides at room temperature through the Menschulkin reaction, which yielded hydrazinium ...

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Determination of polymer‐polymer interaction parameters of incompatible monodisperse and polydisperse polymers in solution

01-Jan-1986 | Narasimhan, Venkataraman; Huang, Robert Y. M.; Burns, Charles M., Journal of Polymer Science: Polymer Symposia, 1986

Abstract Equilibrium phase studies were carried out on the ternary system of polystyrene‐poly butadiene‐toluene at 23°C and 1 atm. Narrow and broad molecular weight distribution (MWD) samples of polystyrene and polybutadiene were employed, and their binodal curves were established. Expressions ...

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Photoredox reaction of functionalized polyelectrolytes

01-Jan-1986 | Morishima, Yotaro; Nozakura, Shun‐Ichi, Journal of Polymer Science: Polymer Symposia, 1986

Abstract The electron transfer reaction from excited phenanthrene to acceptors was shown to be modified markedly when the phenanthrene unit was covalently linked to polyelectrolytes. (1) Such functionalized polyelectrolytes were shown to form hydrophobic microdomains in aqueous solution. (2) ...

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Determination of the sequence distribution and ionization constant of poly(acrylic acid‐co‐vinylamine) by C‐13 NMR

01-Jan-1986 | Chang, C.; Muccio, D. D.; Pierre, T. St., Journal of Polymer Science: Polymer Symposia, 1986

Abstract Three copolymers of poly(acrylic acid‐co‐vinylamine) containing 12% (SP12). 30% (SP30), and 52% (SP52) amino groups were synthesized from poly(acrylic acid) by means of the Schmidt reaction. These copolymers were analyzed by C‐13 NMR and the results compared wiih the previously ...

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Synthesis and properties of bifunctional oligoethers. I. Chiral oligomers from propylene oxide

01-Jan-1986 | Jun, C. L.; Leborgne, A.; Spassky, N., Journal of Polymer Science: Polymer Symposia, 1986

Abstract Racemic or chiral bifunctional oligoethers of the type H—(O—CH(CH3)—CH2—)n—Cl, n = 4‐10, have been prepared by reacting racemic or optically active propylene oxide with teiraphenyl porphyrin (TPPH2)—AlEt2Cl initiator sysfem. The synthesized products were characterized by IR, elemental ...

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Synthesis of acetylene‐terminated monomers using a polymer‐supported palladium catalyst

01-Jan-1986 | Trumbo, D. L.; Marvel, C. S., Journal of Polymer Science: Polymer Symposia, 1986

Abstract A single‐crysial polyethylene‐bound palladium catalys: was prepared and used in the synthesis of acelylene‐terminated monomers.

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Polvnucleotide analogs with PEI or PEI/polyethyloxazoline backbones

01-Jan-1986 | Ludwick, A. G.; Robinson, K. S.; McCloud Jr., J., Journal of Polymer Science: Polymer Symposia, 1986

Abstract The synthesis and characterization of uracil‐ and thy mine‐containing polynucleotide analogs with a linear polyethylenimine backbone is described. Hypochromicity is observed for these analogs in DMSO and in DMSO/H2O solutions and found lo increase as the percent water increases. The ...

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