Journal of Polymer Science Part A: Polymer Chemistry
Copyright © 2012 Wiley Periodicals, Inc., A Wiley Company
Impact Factor: 3.543
ISI Journal Citation Reports © Ranking: 2012: 12/83 (Polymer Science)
Online ISSN: 1099-0518
Associated Title(s): Journal of Polymer Science Part B: Polymer Physics
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- Hydroxyfunctional oxetane-inimers with varied polarity for the synthesis of hyperbranched polyether polyols via cationic ROP
Eva-Maria Christ, Sophie S. Müller, Elena Berger-Nicoletti and Holger Frey
Article first published online: 1 AUG 2014 | DOI: 10.1002/pola.27315
Hydroxyl-functionalized oxetane-inimers with varied alkyl chain length—3-hydroxymethyl-3-methoxymethyloxetane, 3-hydroxymethyl-3-propoxymethyloxetane, and 3-hexoxymethyl-3-hydroxymethyloxetane—were synthesized. Cationic ring-opening polymerization leads to hyperbranched polymers with degrees of branching between 34 and 69%. Via polymerization with 1,1,1-tris(4-hydroxyphenyl)ethane under slow monomer addition conditions, high apparent molecular weights up to 11,220 g mol−1 were obtained. Glass transition and solubility of the polymers can be tailored by varying the alkyl chain length.
- Controlled cyclopolymerization of 4,5-disubstituted 1,7-octadiynes and its application to the synthesis of a dendronized polymer using Grubbs catalyst
Hyeon Park, Ho-Keun Lee, Eun-Hye Kang and Tae-Lim Choi
Article first published online: 1 AUG 2014 | DOI: 10.1002/pola.27317
Cyclopolymerization of 4,5-disubstituted 1,7-octadiyne using a third generation Grubbs catalyst is reported. With this highly reactive polymerization method, monomers with substituents varying from small ester to large dendron were successfully polymerized with rapid propagation rate.
- Synthesis and characterization of novel amphiphilic super-H copolymers with linear–dendritic architecture
Ivan Gitsov, Iliana V. Berlinova and Nikolay G. Vladimirov
Article first published online: 1 AUG 2014 | DOI: 10.1002/pola.27318
Novel linear–dendritic super-H block copolymers are prepared by multistage synthetic process involving “living” polymerizations.
- Self-assembly and reassembly of fiber-forming dipeptides for pH-triggered DNA delivery
Glenn R. Hafenstine, Dylan W. Domaille, Jennifer N. Cha and Andrew P. Goodwin
Article first published online: 31 JUL 2014 | DOI: 10.1002/pola.27319
Hydrazone-based conjugates of PEG-dipeptide and DNA-dipeptide were designed to form stable vesicles at neutral pH, break apart at mildly acidic pH, and form large peptide fibers on release. Light scattering measurements showed that DNA-loaded vesicles of ∼80 nm were stable at pH 7.4 for 6 h and fell apart within 1 h at pH 5, with the DNA fully released from the formed fibers.
- Synthesis and thermal, optical, and mechanical properties of sequence-controlled poly(1-adamantyl acrylate)-block-poly(n-butyl acrylate) containing polar side group
Yoshinori Nakano, Eriko Sato and Akikazu Matsumoto
Article first published online: 31 JUL 2014 | DOI: 10.1002/pola.27322
Thermal, optical, and mechanical properties of the adamantane-containing block copolymers consisting of poly(1-adamantyl acrylate) and poly(n-butyl acrylate) sequences, prepared by the sequence-controlled block copolymerization using organotellurium-mediated living radical polymerization, are described. The increases in the glass transition temperatures and activation energies due to the formation of intermolecular hydrogen bonding by the introduction of polar repeating units as well as their effects on the tensile elasticity, strength, and strain are discussed.