Journal of Polymer Science Part A: Polymer Chemistry

Cover image for Vol. 52 Issue 11

1 June 2014

Volume 52, Issue 11

Pages i–iv, 1509–1642

  1. Cover Image

    1. Top of page
    2. Cover Image
    3. Rapid Communications
    4. Articles
    5. Corrigendum
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      Cover Image, Volume 52, Issue 11 (pages i–ii)

      Article first published online: 24 APR 2014 | DOI: 10.1002/pola.27201

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      Using the radical ring opening copolymerization of methyl methacrylate and a cyclic ketene acetal (5,6-benzo-2-methylene-1,3-dioxepane), statistical copolymers containing ester bonds are obtained from conventional and controlled radical polymerizations. On page 1633 (DOI: 10.1002/pola.27180), Stephan Kobben, Anitha Ethirajan, and Thomas Junkers show the presence of the ester bonds leads to readily degradable materials. This property allows access to an interesting family of materials having degradability characteristics similar to polymethacrylate. Degradation can also be tuned by choosing complex macromolecular architectures, such as 4-armstar polymers.

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      Cover Image, Volume 52, Issue 11 (pages iii–iv)

      Article first published online: 24 APR 2014 | DOI: 10.1002/pola.27202

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      Spherical and one-dimensional fibrillar nanostructures based on the donor acceptor conjugated polymer poly[4,4-bis(2-ethylhexyl)-cyclopenta[2,1-b;3,4-b′]dithiophene-2,6-diyl-alt-2,1,3-benzoselenadiazole-4,7-diyl] (PCPDTBSe) were synthesized by Christopher M. MacNeill, Elizabeth G. Graham, and Nicole H. Levi-Polyachenko, as shown on page 1622 (DOI: 10.1002/pola.27176), using the non-ionic surfactant Pluronic F127 as a soft template. Pluronic F127 is a biocompatible surfactant that is employed to template the nanomaterials into spherical and fibrillar nanostructures and help improve their aqueous stability. Under stimulation from 800 nm near infrared (NIR) light, the PCPDTBSe nanostructures can generate heat, which can be used to destroy cancer cells.

  2. Rapid Communications

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    2. Cover Image
    3. Rapid Communications
    4. Articles
    5. Corrigendum
    1. Spotlight Article

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      Cyclocopolymerization of 1,6-heptadiene with styrene catalyzed by a half-sandwich scandium dialkyl complex bearing a phosphine oxide side arm (pages 1509–1513)

      Fang Guo, Masayoshi Nishiura, Yang Li and Zhaomin Hou

      Article first published online: 11 MAR 2014 | DOI: 10.1002/pola.27152

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      By use of a half-sandwich scandium dialkyl complex bearing cyclopentadienyl ligand with a phosphine oxide side arm [(C5Me4SiMe2CH2P(O)Ph2)Sc(CH2SiMe3)2] in the presence of [Ph3C][B(C6F5)4], the cyclocopolymerization of 1,6-heptadiene with styrene has been achieved for the first time to afford a new family of cyclopolyolefins containing a six-membered ring (methylene-1,3-cyclohexane), a five-membered ring (ethylene-1,2-cyclopentane), and styrene–styrene units.

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      High performance crosslinked system based on reaction of benzoxazine with benzoxazole (pages 1514–1518)

      Kan Zhang, Ruilong Cai, Qixin Zhuang, Xiaoyun Liu, Guang Yang and Zhewen Han

      Article first published online: 13 MAR 2014 | DOI: 10.1002/pola.27153

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      A new crosslinking reaction between benzoxazine and benzoxazole was discovered by investigating the heat-curing reaction of bisphenol A/aniline-based benzoxazine monomer with a polybenzoxazole (PBO) model compound. This new crosslinking reaction provides a facile and straightforward method for the preparation of high-performance crosslinked PBO/polybenzoxazine copolymer composites.

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      Synthesis of comb polyphenylenes by Suzuki coupling from AB macromonomers (pages 1519–1524)

      Sheng Zhou, Yu Zhou, Haijian Tian, Yufeng Zhu, Yu Pan, Feng Zhou, Qikai Zhang, Zhihao Shen and Xinghe Fan

      Article first published online: 25 MAR 2014 | DOI: 10.1002/pola.27167

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      A series of soluble comb polyphenylenes (PPs) were synthesized by Suzuki coupling polycondensation from AB macromonomers. After post-polymerization treatment, the comb PPs have a good symmetric single-peak shape in the GPC curves with reasonable polydispersity indexes ranging from 1.15 to 1.74.

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      Magnetically recyclable Pd-Fe3O4 heterodimer nanocrystals for the synthesis of conjugated polymers via suzuki polycondensation: Toward green chemistry (pages 1525–1528)

      Il Hak Bae, In-Hwan Lee, Sangmoon Byun, Jooyoung Chung, B. Moon Kim and Tae-Lim Choi

      Article first published online: 1 APR 2014 | DOI: 10.1002/pola.27168

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      The synthesis of conjugated polymers using magnetically recyclable Pd-Fe3O4 heterodimer nanocrystals (HNCs) is reported. The consistent high catalytic activity of the HNCs affords various conjugated polymers with high molecular weights in excellent yields. The Pd-Fe3O4 HNCs can be easily recovered from the reaction mixture using an external magnet and reused up to 11 times in the polymerization. This method takes one step closer toward the green synthesis of conjugated polymers.

  3. Articles

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    2. Cover Image
    3. Rapid Communications
    4. Articles
    5. Corrigendum
    1. Evolution of droplet size distribution and composition in miniemulsions (pages 1529–1544)

      Megan B. Casey, E. David Sudol and Mohamed S. El-Aasser

      Article first published online: 29 MAR 2014 | DOI: 10.1002/pola.27146

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      Sizing monomer droplets in miniemulsions is difficult owing to the monomer's limited but significant water solubility. Typically, dilution is required, exacerbating droplet degradation during measurement. In this work, droplets were sized using various techniques. We found that droplet size and composition can change significantly with time and costabilizer content. This directly affects the particle size distribution of the resulting latex upon polymerization of the miniemulsion, as illustrated in this idealized representation of the process.

    2. Graphene oxide-induced polymerization and crystallization to produce highly conductive polyaniline/graphene oxide composite (pages 1545–1554)

      Mohamad Hasan Mohamadzadeh Moghadam, Sina Sabury, Mohsen Moazzami Gudarzi and Farhad Sharif

      Article first published online: 11 MAR 2014 | DOI: 10.1002/pola.27147

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      Graphene Oxide assisted polymerization of aniline in the absence of a conventional oxidant leads to the formation of a chemically grafted morphology. Polyaniline is attached to the partially reduced graphene oxide sheet, despite conventional ammonium persulfate assisted polymerization of aniline in the presence of graphene oxide. The highly crystalline structure of the graphene oxide–polyaniline composite leads to a high electrical conductivity which is 10 times higher than graphene oxide–polyaniline obtained by ammonium persulfate assisted polymerization.

    3. Spotlight Article

      RAFT polymerization of alternating styrene-pentafluorostyrene copolymers (pages 1555–1559)

      Niels ten Brummelhuis and Marcus Weck

      Article first published online: 13 MAR 2014 | DOI: 10.1002/pola.27148

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      Reversible addition-fragmentation chain transfer (RAFT) polymerization is used to control the copolymerization of styrene and 2,3,4,5,6-pentafluorostyrene. The molecular weight and dispersity can effectively be controlled in this way while maintaining the tendency towards alternating polymerization. By performing the polymerization at room temperature, the tendency towards alternating copolymerization can be improved.

    4. Domino free radical photopolymerization based on phototriggered base proliferation reaction and redox initiation (pages 1560–1569)

      Minghui He, Shun Jiang, Ruixin Xu, Jianwen Yang, Zhaohua Zeng and Guangxue Chen

      Article first published online: 21 MAR 2014 | DOI: 10.1002/pola.27149

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      A detailed evaluation of the kinetics of domino free radical photopolymerization based on phototriggered base proliferation reaction and redox initiation in the thin polymer films is described.

    5. Preparation of macrodiols and polyols by chopping high-molecular-weight aliphatic polycarbonates (pages 1570–1580)

      Jong Yeob Jeon, Eun Yeong Hwang, Seong Chan Eo and Bun Yeoul Lee

      Article first published online: 16 MAR 2014 | DOI: 10.1002/pola.27150

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      A new method is dislosed for preparation of low-molecular-weight macrodiols or polyols (GPC-measured Mn of ~2000), which have potential applications in the polyurethane industry. Chopping high-molecular-weight poly(1,4-butylene carbonate) or its copolymers (Mn: 40,000–80,000) with a chopper [HOAOH, A(OH)3, or tetraol] in the presence of a small amount of sodium alkoxide catalyst (0.05 mol %) in neat melt conditions at 190–150 °C afforded the desired macrodiol or polyols.

    6. Orthogonal multifunctionalization of aliphatic polycarbonate via sequential Michael addition and radical-thiol-ene click reactions (pages 1581–1587)

      Bilal Bugra Uysal, Ufuk Saim Gunay, Gurkan Hizal and Umit Tunca

      Article first published online: 17 MAR 2014 | DOI: 10.1002/pola.27151

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      Aliphatic polycarbonate copolymer is synthesized by ring opening copolymerization of acrylate- and allyl-functional cyclic carbonate monomers. The post-polymerization functionalization of the resulting copolymer was performed quantitatively using a variety of thiol compounds via sequential Michael addition and photoinduced radical thiol-ene click reactions within relatively short reaction time at ambient temperature.

    7. Building up polymer architectures on graphene oxide sheet surfaces through sequential atom transfer radical polymerization (pages 1588–1596)

      Kang-Jen Peng, Ke-Hsuan Wang, Keh-Ying Hsu and Ying-Ling Liu

      Article first published online: 17 MAR 2014 | DOI: 10.1002/pola.27154

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      Functionalization of graphene oxides (GOs) with atom transfer radical addition and sequential surface-initiated atom transfer radical polymerization has been demonstrated to buildup various polymer architectures, such as a linear polymer, V-shape block polymer, multibonded polymer layer, and hierarchical brush-on-layer polymer on GO sheet surfaces.

    8. Lipidic polyols using thiol-ene/yne strategy for crosslinked polyurethanes (pages 1597–1606)

      Phuoc Dien Pham, Vincent Lapinte, Yann Raoul and Jean-Jacques Robin

      Article first published online: 24 MAR 2014 | DOI: 10.1002/pola.27159

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      Oleic acid and α,ω-diacid were converted into lipidic polyols by thiol-ene/yne coupling. The products were fully characterized before being crosslinked into polyurethane (PU) materials. Relatively high-Tg PUs were obtained.

    9. One-step synthesis of poly(N-vinylpyrrolidone)-b-poly(l-lactide) block copolymers using a dual initiator for RAFT polymerization and ROP (pages 1607–1613)

      Sang Jin Shin, Young Chang Yu, Ja Deok Seo, Sung Ju Cho and Ji Ho Youk

      Article first published online: 25 MAR 2014 | DOI: 10.1002/pola.27160

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      Amphiphilic, biocompatible poly(N-vinylpyrrolidone)-b-poly(l-lactide) (PVP-b-PLLA) block polymers were synthesized at 60 °C using the reversible addition–fragmentation chain transfer (RAFT) agent, 2-hydroxyethyl 2-(N,N-diphenylcarbamothioylthio)propanoate as a dual initiator for RAFT polymerization and ring-opening polymerization in a one-step procedure. This one-step procedure is believed to be the most convenient method for synthesizing PVP-b-PLLA block copolymers.

    10. Copolymerizations of tetraethyl vinylidene phosphonate. Bisphosphonate units in the main polymer chain. II (pages 1614–1621)

      Julia Pretula, Krzysztof Kaluzynski and Stanislaw Penczek

      Article first published online: 25 MAR 2014 | DOI: 10.1002/pola.27162

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      Copolymerization of a novel tetraethyl vinylidene phosphonate with several vinyl/ethylenic monomers is studied. The phosphoester groups are convertible to bisphosphonate acidic groups, known to belong to the most powerful complexing agents for several cations. These novel polymers bear resemblance to their low molar mass analogues used as biologically active compounds (e.g., fighting osteoporosis).

    11. Spotlight Article

      Soft template synthesis of donor–acceptor conjugated polymer nanoparticles: Structural effects, stability, and photothermal studies (pages 1622–1632)

      Christopher M. MacNeill, Elizabeth G. Graham and Nicole H. Levi-Polyachenko

      Article first published online: 7 APR 2014 | DOI: 10.1002/pola.27176

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      Donor–acceptor conjugated polymer nanoparticles and nanofibers were synthesized by a soft template method using Pluronic F127 and compared to nano-PCPDTBSe, which was a larger PCPDTBSe nanoparticle synthesized in a previous study. The pluronic wrapped nanoparticles (40–60 nm) showed excellent aqueous stability, no cytotoxicity and good photothermal efficiency towards both non-cancerous FHs 74 intestinal or CT26 colorectal cancer cells compared to nano-PCPDTBSe (150 nm) and PCPDTBSe nanofibers (d = 20–60 nm, l = 200–1000 nm).

    12. Synthesis of degradable poly(methyl methacrylate) star polymers via RAFT copolymerization with cyclic ketene acetals (pages 1633–1641)

      Stephan Kobben, Anitha Ethirajan and Thomas Junkers

      Article first published online: 7 APR 2014 | DOI: 10.1002/pola.27180

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      Copolymers of the cyclic ketene acetal 5,6-benzo-2-methylene-1,3-dioxepane (BMDO) and methyl methacrylate were synthesized using the RAFT methodology. The linear and 4-arm star-shaped polymers obtained consisted mainly of methyl methacrylate and are degradable. To assess the amount of BMDO in the polymers, copolymerization parameters were determined from kinetic analysis.

  4. Corrigendum

    1. Top of page
    2. Cover Image
    3. Rapid Communications
    4. Articles
    5. Corrigendum
    1. You have free access to this content
      Corrigendum: Highly stereoselective coordination polymerization of β-myrcene from a lanthanide-based catalyst: Access to bio-sourced elastomers (page 1642)

      Saliha Loughmari, Abderradfia Hafid, Aicha Bouazza, Abdelaziz El Bouadili, Philippe Zinck and Marc Visseaux

      Article first published online: 25 MAR 2014 | DOI: 10.1002/pola.27157

      This article corrects:

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