Journal of Polymer Science Part A: Polymer Chemistry
Copyright © 2012 Wiley Periodicals, Inc., A Wiley Company
Impact Factor: 3.113
ISI Journal Citation Reports © Ranking: 2014: 18/82 (Polymer Science)
Online ISSN: 1099-0518
Associated Title(s): Journal of Polymer Science Part B: Polymer Physics
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- Continuous flow synthesis of poly(methyl methacrylate) via a light-mediated controlled radical polymerization
Anna Melker, Brett P. Fors, Craig J. Hawker and Justin E. Poelma
Article first published online: 29 AUG 2015 | DOI: 10.1002/pola.27765
Recently, the ability to control polymerizations using external stimuli such as light has gained attention. However, scaling up these reactions presents unique challenges such as shallow and uneven penetration of light through the reaction medium, effectively lowering the rate of polymerization. To circumvent these issues, a continuous flow reactor was used with special attention made to choice of tubing material, yielding 50% faster reaction rates compared to batch reactions.
- Polyisobutylene-based polyurethanes: VII. structure/property investigations for medical applications
Kalman Toth, Nihan Nugay and Joseph P. Kennedy
Article first published online: 28 AUG 2015 | DOI: 10.1002/pola.27804
The hydrolytic, oxidative, and metal ion oxidative resistance of PIB-based polyurethane is far superior to that of PDMS-based commercial polyurethane (Elast-Eon™ E2A), while their static mechanical properties (tensile strength and elongation) are comparable.
- High molecular weight and low dispersity polyacrylonitrile by low temperature RAFT polymerization
Jeremy D. Moskowitz, Brooks A. Abel, Charles L. McCormick and Jeffrey S. Wiggins
Article first published online: 28 AUG 2015 | DOI: 10.1002/pola.27806
Well-controlled polymers with uniform dispersity and high molecular weight serve as excellent model precursors for further study of in situ carbon fiber production of PAN-based carbon fibers. Well-controlled high molecular weight and low dispersity polyacrylonitrile (PAN) was synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization. Through low temperature (30 °C) RAFT polymerization, chain termination and chain transfer reactions were suppressed leading to improved control, higher molecular weight PAN, and higher conversions.
- Effect of multiple H-bonding on the properties of polyimides containing the rigid rod groups
Xiaoye Ma, Chuanqing Kang, Wenhui Chen, Rizhe Jin, Haiquan Guo, Xuepeng Qiu and Lianxun Gao
Article first published online: 28 AUG 2015 | DOI: 10.1002/pola.27808
Five fully symmetrical diamines containing benzimidazole, benzoxazole, and hydroxyl group were synthesized and a series of polyimides were prepared by the reaction of these diamines with commercial aromatic dianhydrides. The influence on the properties of PIs by the introduction of rigid rod-like nitrogen heterocyclic structure and the formation of intra-/intermolecular H-bonding has been discussed.
- Radical polymerization behavior and molecular weight development of homologous monoacrylate monomers in lyotropic liquid crystal phases
Michael A. DePierro, Céline Baguenard and C. Allan Guymon
Article first published online: 27 AUG 2015 | DOI: 10.1002/pola.27783
Surfactant self-assembly can generate lyotropic liquid-crystalline mesophases such as hexagonal, bicontinuous cubic, or lamellar nanostructures. These geometries can be used as a photopolymerization template to synthesize materials with nanoscale features. Rapid radical polymerization kinetics and thermodynamics are key factors to better control nanostructure retention. Herein, monomer polarity, light intensity, and template geometry are correlated to the evolution of polymer molecular weight and radical photopolymerization kinetics to better understand the parameters that can improve the nanostructure transfer.