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Showing 1 to 7 of 7 for “"polyketones"”.
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Towards polyethylene-based materials with non-alternatively incorporated carbon monoxide monomer
… of ethylene/carbon monoxide copolymers (polyketones) was pursued via insertion polymerization methods through palladium(II) and nickel(II) catalysis. Specifically, phosphine sulfonate palladium(II) precatalysts derived from the in situ complexation of palladium(II) acetate and phosphine …
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Part I: Synthesis of Aromatic Polyketones Via Soluble Precursors Derived from Bis(A-Amininitrile)S; Part Ii: Modifications of Epoxy Resins with Functional Hyperbranched Poly(Arylene Ester)s
… a new approach to high molecular weight aromatic polyketones via soluble precursors derived from bis(a-aminonitrile)s. Bis(a-aminonitrile)s were easily synthesized from dialdehydes and secondary amines in very high yield by the Strecker reaction. Polymerization of bis(a-aminonitrile)s with …
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Structure-property relationships of functionalized modifiers for thermosetting resin systems
… into an EPON 828/4,4'·DDS system. However, the polyketones proved to be ineffective toughening agents due to an incompatibility resulting in macroscopic phase separation. In contrast, the functionalized polysulfones were shown to be effective toughening agents, with the resultant morphology …
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Sustainable Polymers Through Creative Design
… of polyolefins with renewable polymers. First, polyketones synthesized by ROMP were developed for their potential use as photodegradable polymers. This initial study probed the synthesis of different polyketone monomers and the properties of their respective polymers. Next, a photodegradable and …
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Anion Exchange Membranes (AEMs), based on Polyamine Obtained by Modifying Polyketone, for Electrochemical Applications
… for use in several electrochemical applications. Polyketones seem particularly promising as materials for making anion exchange membranes (AEMs), not only because the starting monomers, carbon monoxide and ethylene, are relatively inexpensive (pointing to the feasibility of producing polyketone at …
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Part 1. the mesomorphic properties of arloxy-s-triazines and their analogs, Part 2. the synthesis and polymerization behavior of α-aminonitriles and related compounds
… wholly aromatic and mixed aliphatic/aromatic polyketones is extremely powerful and unprecedented in the literature to date. During the course of this research, it was also discovered that some of these α-aminonitriles underwent side reactions which were undesirable for polymerization but which …
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Micro-photovoltaic materials and systems for solar energy harvesting and light management
… based on post-polymerization modifications of polyketones. The absorption of polyhydrofuran is controlled by reaction time subsequent to addition of hydrogen bromide (HBr) gas and is correlated with the presence of chromophoric endgroups, as dictated by the molecular weight. The polyhydrofuran …