Polymer Science News

Shape memory polymer foams prepared from a heparin-inspired polyurethane/urea

RSC - Polym. Chem. latest articles - Wed, 08/30/2017 - 11:42

Polym. Chem., 2017, 8,5039-5048
DOI: 10.1039/C7PY00204A, PaperQ. Chai, Y. Huang, T. L. Kirley, N. Ayres
Shape memory foams have been prepared using a heparin-inspired polyurea/urethane that displays excellent resistance to platelet adherence.
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Categories: Polymer Science News

Poly(N-(2-hydroxypropyl)methacrylamide)-valproic acid conjugates as block copolymer nanocarriers

RSC - Polym. Chem. latest articles - Wed, 08/30/2017 - 11:42

Polym. Chem., 2017, 8,4983-4987
DOI: 10.1039/C7PY00196G, CommunicationJawaher A. Alfurhood, Hao Sun, Christopher P. Kabb, Bryan S. Tucker, James H. Matthews, Hendrik Luesch, Brent S. Sumerlin
We report nanoassemblies based on block copolymers of N-(2-hydroxypropyl)methacrylamide (HPMA) in which drug cleavage enhances the biological compatibility of the original polymer carrier by regeneration of HPMA units.
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Categories: Polymer Science News

Oxygen tolerant photopolymerization for ultralow volumes

RSC - Polym. Chem. latest articles - Wed, 08/30/2017 - 11:42

Polym. Chem., 2017, 8,5012-5022
DOI: 10.1039/C7PY00007C, PaperJonathan Yeow, Robert Chapman, Jiangtao Xu, Cyrille Boyer
A benchtop approach is developed for the synthesis of various polymeric architectures using an aqueous Reversible Addition-Fragmentation chain Transfer (RAFT) photopolymerization technique.
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Categories: Polymer Science News

Poly(glycerol sebacate) nanoparticles for encapsulation of hydrophobic anti-cancer drugs

RSC - Polym. Chem. latest articles - Wed, 08/30/2017 - 11:42

Polym. Chem., 2017, 8,5033-5038
DOI: 10.1039/C6PY02192A, PaperBenoit Louage, Liesa Tack, Yadong Wang, Bruno G. De Geest
Physical encapsulation of hydrophobic compounds into nanocarriers that are stable in aqueous medium is of high interest as it can increase solubilization of the drug, lower its toxicity, control its pharmacokinetic profile and thus overall improve the therapeutic efficacy.
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Categories: Polymer Science News

Aqueous RAFT at pH zero: enabling controlled polymerization of unprotected acyl hydrazide methacrylamides

RSC - Polym. Chem. latest articles - Wed, 08/30/2017 - 11:42

Polym. Chem., 2017, 8,4978-4982
DOI: 10.1039/C6PY01563H, CommunicationEmily A. Hoff, Brooks A. Abel, Chase A. Tretbar, Charles L. McCormick, Derek L. Patton
A first example of controlled radical polymerization of monomers containing unprotected acyl hydrazide pendent groups was demonstrated using aqueous RAFT polymerization at pH = 0.
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Categories: Polymer Science News

Analysis of the reaction mechanism of the thiol-epoxy addition initiated by nucleophilic tertiary amines

RSC - Polym. Chem. latest articles - Wed, 08/30/2017 - 10:41
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01263B, PaperAli Osman Konuray, Xavier Fernandez-Francos, Xavier Ramis
A kinetic model for the thiol-epoxy crosslinking initiated by tertiary amines has been proposed. The kinetic model is based on mechanistic considerations and it features the effect of initiator, hydroxyl...
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Categories: Polymer Science News

Synthesis of Functional Polyolefins via Ring-Opening Metathesis Polymerization of Ester-functionalized Cyclopentene and Its Copolymerization with Cyclic Comonomers

RSC - Polym. Chem. latest articles - Wed, 08/30/2017 - 03:35
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01330B, PaperShaofei Song, Zhisheng Fu, Junting Xu, Zhiqiang Fan
In this work, a series of ester-functionalized polyolefins were synthesized via ring-opening metathesis polymerization (ROMP) of alkoxycarbonyl cyclopentene (alkyl = methyl, iso-propyl and tert-butyl) or its ROMP copolymerization with other...
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Categories: Polymer Science News

Ratiometric imaging of lysosomal hypochloric acid enabled by FRET-based polymer dots

RSC - Polym. Chem. latest articles - Tue, 08/29/2017 - 11:26
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01289F, PaperHong Wang, Peisheng Zhang, Xianghong Yong, Bin Zhao, Pinggui Yi, Jian Chen
The development of effective method for imaging of lysosomal hypochlorous acid (HClO) is of great significance for better understand the roles of HClO-related diseases. Herein, we report on the fabrication...
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Categories: Polymer Science News

Reinforced poly(hydroxyurethane) thermosets as high performance adhesives for aluminum substrates

RSC - Polym. Chem. latest articles - Tue, 08/29/2017 - 11:26
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01209H, PaperSatyannarayana Panchireddy, Jean-Michel Thomassin, Bruno Grignard, Christian Damblon, Andrew Tatton, Christine Jerome, Christophe Detrembleur
Poly(hydroxyurethane) (PHU) thermosets reinforced with (functional) nanofillers were developed to design high performance adhesives for bare aluminium. Solvent-free cyclic carbonate/amine/PDMS formulations loaded with native, epoxy- or cyclic carbonate-functionalized ZnO nanofillers...
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Categories: Polymer Science News

Mechanosynthesized Copper (I) complex based initiating systems for redox polymerization: towards upgraded oxidizing and reducing agents

RSC - Polym. Chem. latest articles - Tue, 08/29/2017 - 11:26
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01244F, PaperJacques Lalevee, Didier Gigmes, Frederic Dumur, Assi Mousawi, Patxi Garra, Celine Dietlin, Fabrice Morlet-Savary, Jean Pierre Fouassier, Bernadette Graff
Significant improvements of the recently proposed Cu(I)/Vitamin C+water/dibenzoyl peroxide (BPO) system for the redox free radical polymerization of methacrylates under air are presented here, the goal being to avoid the...
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Categories: Polymer Science News

Water-soluble Phosphorescent Conjugated Polymer Brush for Tumor-targeted Photodynamic Therapy

RSC - Polym. Chem. latest articles - Tue, 08/29/2017 - 10:25
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01248A, PaperPengfei Sun, Gaina Wang, Huanzhi Hou, Pengcheng Yuan, Weixing Deng, Chao Wang, Xiaomei Lu, Quli Fan, Wei Huang
Photodynamic therapy (PDT) has become a promising treatment against cancer due to low side effects and high therapeutic efficacy. However, the limitations of photosensitizers such as poor water solubility and...
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Categories: Polymer Science News

Post-polymerization functionalization strategy for the synthesis of sulfonyl (trifluoromethanesulfonyl)imide functionalized (co)polymers

RSC - Polym. Chem. latest articles - Tue, 08/29/2017 - 10:25
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01098B, CommunicationThe Hien The Ho, Aura Tintaru, Marion Rollet, Didier Gigmes, T. N. Trang Phan
In this communication, we report the synthesis of a series of potassium sulfonyl (trifluoromethane)sulfonimide (STFSI) derivatives, bearing at one extremity the STFSI group and the other extremity either bromo, azido...
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Categories: Polymer Science News

Light triggered self-healing of polyacrylate polymers crosslinked with 7- methacryloyoxycoumarin crosslinker

RSC - Polym. Chem. latest articles - Mon, 08/28/2017 - 07:48
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01385J, PaperMustafa Abdallh, Milton Thomas Hearn, George Philitp Simon, Kei Saito
A new light-responsive crosslinker containing a coumarin photosensitive unit has been synthesised and was used in reactions with a range of acrylate monomers (butylmethyl acrylate (BMA), methyl acrylate (MA), hexyl...
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Categories: Polymer Science News

Polymer Synthesis by Mimicking Nature's Strategy: combination of ultra-fast RAFT and the Biginelli reaction

RSC - Polym. Chem. latest articles - Mon, 08/28/2017 - 07:48
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01313B, PaperHaibo Wu, Lei Yang, Lei Tao
Inspired by nature's two-stage strategy to efficiently synthesize numerous proteins using limited amino acids, a two-stage polymer preparation method has been successfully developed via the combination of ultra-fast RAFT polymerization...
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Categories: Polymer Science News

Characterizing Single Chain Nanoparticles (SCNPs): A Critical Survey

RSC - Polym. Chem. latest articles - Mon, 08/28/2017 - 06:47
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01278K, PaperEva Blasco, Bryan T. Tuten, Hendrik Frisch, Albena Lederer, Christopher Barner-Kowollik
We provide the results of a critical literature survey on the reported sizes of single chain polymer nanoparticles (SCNPs), an emerging class of functional nanomaterials with sub-30 nm diameters. Comparing...
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Categories: Polymer Science News

All Acrylic-based Thermoplastic Elastomers with High Upper Service Temperature and Superior Mechanical Properties

RSC - Polym. Chem. latest articles - Fri, 08/25/2017 - 11:51
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01225J, PaperNam-Goo Kang, Wei Lu, Yangyang Wang, Weiyu Wang, Shiwang Cheng, Jiahua Zhu, Yuewen Xu, Kunlun Hong, Jimmy W. Mays
All acrylic-based thermoplastic elastomers (TPEs) offer potential alternatives to the widely-used styrenic TPEs. However, the high entanglement molecular weight (Me) of polyacrylates, as compared to polydienes, leads to "disappointing" mechanical...
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Categories: Polymer Science News

Post-synthetic Modification of Polyvinyl Alcohol with a Series of N Alkyl Substituted Carbamates towards Thermo and CO2-Responsive Polymers

RSC - Polym. Chem. latest articles - Fri, 08/25/2017 - 10:51
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01136A, PaperTengfei Kong, Guoqiang Guo, Huatang Zhang, Liang Gao
Intensive efforts have been devoted to the synthesis of thermoresponsive polymers with terminal N-alkyl-substituted groups. Furthermore, an investigation into polymers with a lower critical solution temperature (LCST) controlled by CO2...
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Categories: Polymer Science News

N-Heterocyclic Olefins as Initiators for the Polymerization of (Meth)Acrylic Monomers: A Combined Experimental and Theoretical Approach

RSC - Polym. Chem. latest articles - Fri, 08/25/2017 - 10:51
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01226H, PaperStefan Naumann, Kai Mundsinger, Luigi Cavallo, Laura Falivene
The zwitterionic organopolymerization of four different acrylic monomers (N,N-dimethylacrylamide, methyl acrylate, methyl methacrylate and tert-butyl methacrylate) based on neutral initiators, so-called N-heterocyclic olefins (NHOs), is presented. Scope and underlying (deactivation-)mechanisms...
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Categories: Polymer Science News

Construction of Polymer Coated Core-Shell Magnetic Mesoporous Silica Nanoparticles with Triple Responsive Drug Delivery

RSC - Polym. Chem. latest articles - Fri, 08/25/2017 - 07:48
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01179B, PaperMohammad Hegazy, Pei Zhou, Guangyu Wu, Lei Wang, Rahoui Nahla , Nadia Taloub, Xin Huang, Yu-Dong Huang
Multi-responsive drug delivery systems are playing a very important role in nanomedicine, as they can feature as smart carriers releasing their payload on demand. In this study, magnetic, reductive and...
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Categories: Polymer Science News

Preparation of Poly(ionic liquid) Nanoparticles through RAFT/MADIX Polymerization-Induced Self-Assembly

RSC - Polym. Chem. latest articles - Wed, 08/23/2017 - 06:41
Polym. Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7PY01273J, CommunicationQi Zhang, Milin Fu, Chengjian Wang, Jianli Wang, Shiping Zhu
We report herein a facile method for hierarchical regulation of the morphology of poly(ionic liquid) (PIL) nanoparticles through RAFT/MADIX aqueous polymerization-induced self-assembly of 3-n-dodecyl-1-vinylimidazolium bromide, by using PEG-xanthate as the...
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Categories: Polymer Science News

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