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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- A visible light responsive azobenzene-functionalized polymer: Synthesis, self-assembly, and photoresponsive properties
Guojie Wang, Dong Yuan, Tingting Yuan, Jie Dong, Ning Feng and Guoxiang Han
Article first published online: 29 JUL 2015 | DOI: 10.1002/pola.27747
An amphiphilic tetra-o-methoxy-substituted-azobenzene-functionalized poly(acrylic acid) was synthesized via the postpolymerization modification method, which can exhibit the trans-to-cis photoswitching under green light irradiation at 520 nm and the cis-to-trans photoswitching under blue light irradiation at 420 nm in both solution and aggregate state. The fluorescence of loaded Nile Red in the self-assembled polymer nanoparticles can be tuned upon the visible light irradiation.
- Graft modification of crystalline nanocellulose by Cu(0)-mediated SET living radical polymerization
Hai-Dong Wang, Ryan D. Roeder, Ralph A. Whitney, Pascale Champagne and Michael F. Cunningham
Article first published online: 28 JUL 2015 | DOI: 10.1002/pola.27754
Cu(0)-catalyzed SET living radical polymerization was used to graft poly(methyl acrylate) from a crystalline nanocellulose (CNC) surface. The polymer grafting step process exhibits fast polymerization kinetics and a very low level of copper consumption. The resulting polymerization medium is clear with almost no color, indicating low dissolved copper concentrations.
- Free radical polymerization of caffeine-containing methacrylate monomers
Ashley M. Nelson, Sean T. Hemp, Jessica Chau and Timothy E. Long
Article first published online: 28 JUL 2015 | DOI: 10.1002/pola.27756
A two-step synthesis involving a UV-induced photoreaction transformed the renewable resource caffeine into a polymerizable methacrylate. Free radical polymerization with 2-ethylhexyl methacrylate afforded novel copolymers containing covalently bound pendant caffeine. 1H NMR and UV-vis absorbance spectroscopy confirmed caffeine incorporation and SEC elucidated high molecular weight copolymers resulted. Caffeine increased both the glass transition temperature and modulus of the copolymers at low mol % incorporation revealing the potential for caffeine as a comonomer in thermoplastic elastomers.
- Synthesis of traditional and ionic polymethacrylates by anion catalyzed group transfer polymerization
Veronika Strehmel and Volker Senkowski
Article first published online: 28 JUL 2015 | DOI: 10.1002/pola.27760
Group transfer polymerization of ionic liquid methacrylates bearing the same anion as the hydrophobic ionic liquid used as solvent occurs more efficient compared to traditional methacrylates. The hydrophobic ionic liquid solvent influences group transfer polymerization of both traditional and ionic liquid methacrylates. The anion of the ionic liquid derives from a super acid. The ionic liquid additionally shows catalytic activity.
- Fabric-hydrogel composite membranes for culturing microalgae in semipermeable membrane-based photobioreactors
Seung-Yong Lee, Z-Hun Kim, Hwa Yeon Oh, Younghoon Choi, Hanwool Park, Daewoo Jung, Jong-Min Kim, Yang Ho Na, Sang-Min Lim, Choul-Gyun Lee and Jin-Kyun Lee
Article first published online: 28 JUL 2015 | DOI: 10.1002/pola.27770
Fabric-hydrogel composite membranes (FHCMs) are proposed as semipermeable materials for the construction of photobioreactors. A cotton fabric inside the hydrogel matrix endows the composite with tensile strength, which enables casting of FHCMs into thin membranes. In permeability coefficient measurements of ions, it reached as high as 1.2 × 10−8 m2 min−1. In microalgal culture, a photobioreactor with a FHCM could maintain sufficient ion concentration and pH of the culture broth, supporting microalgal growth.