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241 Newest Publications about the topic polyamides

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Synthesis and characterization of novel semiaromatic copolyamides bearing both polar hydroxyl and unsaturated allyl substituents

31-Oct-2016 | Wenbin Wang, Xiang Qi, Fei Zhang, Yingdan Zhu, Xinhua Wan, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT A series of novel semiaromatic (co)polyamides, poly(octylene terephthalamide)‐ran‐poly[octylene 2,5‐bis(allyloxy)terephthalamide] (APA8T‐x, x represents the molar fraction of allyloxy containing structure unit), were prepared via the interfacial polymerization of 1,8‐diaminooctane, ...

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Poly(phosphorodiamidate)s by Olefin Metathesis Polymerization with Precise Degradation

26-Oct-2016 | Mark Steinmann, Manfred Wagner, Frederik R. Wurm, Chemistry - A European Journal, 2016

Abstract Degradable polymers are a currently growing field of research for biomedical and materials science applications. The majority of such compounds are based on polyesters and polyamides. In contrast, their phosphorus‐containing counterparts are much less studied, in spite of their ...

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Targeting 24 bp within Telomere Repeat Sequences with Tandem Tetramer Pyrrole–Imidazole Polyamide Probes

13-Oct-2016 | Yusuke Kawamoto; Asuka Sasaki; Anandhakumar Chandran; Kaori Hashiya; Satoru Ide; Toshikazu Bando; Kazuhiro Maeshima; ..., Journal of the American Chemical Society, 2016

Synthetic molecules that bind sequence-specifically to DNA have been developed for varied biological applications, including anticancer activity, regulation of gene expression, and visualization of specific genomic regions. Increasing the number of base pairs targeted by synthetic molecules ...

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Design and Synthesis of New s-Triazine Polymers and its Application as Nanoparticulate Drug Delivery Systems

05-Oct-2016 | Sherine Khattab; Samar E Abdel Naim; Mousa El-Sayed; Aly A El Bardan; Ahmed O Elzoghby; Adnan A. Bekhit; Ayma ..., New Journal of Chemistry, 2016

Herein, we report the synthesis of a library of new s-triazine polyamides containing glycine and thioglycolic acid. The reaction of s-triazine dicarboxylic acid derivatives with ethylenediamine, benzidine, piperazine or p-phenylenediamine, afforded the target designed s-triazine polyamides. ...

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Temperature‐induced structural changes in even‐odd nylons with long polymethylene segments

01-Oct-2016 | Cristian Olmo, Ramon Rota, Juan Carlos Martínez, Jordi Puiggalí, Lourdes Franco, Journal of Polymer Science Part B: Polymer Physics, 2016

ABSTRACT Structural transitions of nylons 8 9 and 12 9 heating and cooling processes were investigated using calorimetric, spectroscopic during and real time X‐ray diffraction data. These even‐odd nylons had three polymorphic forms related to structures where hydrogen bonds were established in ...

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High‐temperature copolyamides obtained by the efficient transamidation of crystalline–crystalline polyamide blends

22-Sep-2016 | Julien Cretenoud, Sylvain Galland, Christopher J. G. Plummer, Véronique Michaud, Andreas Bayer, Nikolai Lamberts, Bo ..., Journal of Applied Polymer Science, 2016

ABSTRACT High‐performance thermoplastic composites based on semiaromatic polyamides are prime candidates for metal replacement in lightweight structural applications. However, the low ductility and toughness of semiaromatic polyamides remain major obstacles to their wider industrial ...

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Pronounced Dielectric and Hydration/Dehydration Behaviors of Monopolar Poly(N-alkylglycine)s in Aqueous Solution

07-Sep-2016 | Kengo Arai; Naoya Sagawa; Toshiyuki Shikata; Garrett L. Sternhagen; Xin Li; Li Guo; Changwoo Do; Donghui Zhang, Journal of Physical Chemistry B, 2016

Poly(N-methylglycine) (NMGn) and poly(N-ethylglycine) (NEGn) obtained by polymerization reactions initiated by benzylamine have no carboxy termini, such as those in normal polyamides, but have only amino termini, which exist primarily as cations in aqueous media at a pH value of ca. 9.5, observed ...

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Molecular self‐assembly using peptide nucleic acids

03-Aug-2016 | Or Berger, Ehud Gazit, Peptide Science, 2016

Abstract Peptide nucleic acids (PNAs) are extensively studied for the control of genetic expression since their design in the 1990s. However, the application of PNAs in nanotechnology is much more recent. PNAs share the specific base‐pair recognition characteristic of DNA together with ...

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Design of novel plasticizers for nylon: from molecular modeling to experimental verification

02-Aug-2016 | David Alperstein, Dafna Knani, Polymers for Advanced Technologies, 2016

Polyamides are semi‐crystalline polymers useful in a wide range of applications in the plastics industry. Some applications require higher flexibility and workability of the polyamides. Therefore, plasticizers are added to ease compounding and processing procedures and produce the desired ...

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Sustainable and lightweight biopolyamide hybrid composites for greener auto parts

28-Jul-2016 | Shaghayegh Armioun, Suhara Panthapulakkal, Johannes Scheel, Jimi Tjong, Mohini Sain, The Canadian Journal of Chemical Engineering, 2016

ABSTRACT Sustainable bio‐based materials have remarkable environmental and health impacts throughout their life cycles. Over the past few decades, green biocomposites have attained rising attraction in the automotive industry, as they can be customized to meet many of its prime requirements. ...

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