Seymour-Polymer Chemistry.pdf

16th International Conference on Polymers and Organic Chemistry (POC-16) 13-16 June 2016 Creta Maris Beach Resort, Hersonissos, Crete, Greece Book of Abstracts

Catalytic cyclopropanation of commercial 1,2-or 1,4-cis-polybutadiene, respectively, with ethyl diazoacetate catalyzed by [Tp Br3 Cu(NCMe)] (Tp Br3 = hydrotris(3,4,5-tribromo-FINAL VERSION ACCEPTED 2 1-pyrazolyl)borate) at room temperature afforded high molecular weight (Mn > 10 5 x10 3 g mol-1) side-chain or main-chain, respectively, carboxyethyl cyclopropyl-substituted polymers with variable and controlled degrees of functionalization. Complete functionalization of 1,4-cis-polybutadiene afforded poly[ethylene-alt-(3-ethoxycarbonylcyclopro-pene)].Catalytic hydrogenation of residual double bonds of partially cyclopropanated polybutadienes provided access to the corresponding saturated polyolefins. Thermal properties are reported.

Polymers Chemistry and Physics of Modern Materials Cowie, 2007

Acta Polymerica, 1998

One trend in polymer chemistry apparent over the last few years-that knowledge about known polyreactions has been combined to produce new polymeric architectures-continued in 1997. The greater understanding of metallocenes led to the further development of catalysts and with them to new polymer combinations. Interest is still being shown in hyperbranched polymers and dendrimers. Further interest was shown in the understanding of the structures and properties of interfaces and surfaces, as well as their applications. An overview of news from polymer analysis concludes this part of the report.

ACS Symposium Series, 2010

2013

Relation Between Tm and Tg 2.10 Theoretical Treatment of Glass Transition 2.10.1 Quantitative Effects of Factors on Tg 2.11 Chain Movements in Amorphous State 2.11.1 The Reptation Model 2.12 Thermodynamics of Rubber Elasticity 2.12.1 Stress-Strain Behavior of Crosslinked Elastomers 2.

Frontiers in Chemistry, 2013

Carboxylated polyethersulfone (PES-COOH) was doped with various concentrations of ZnYCdO hybrid metal oxides on the surface of the polymer matrix to produce PES-COOH-ZnYCdO nanocomposites as a thin film. PES-COOH was fabricated by two-steps process: acetylating reaction followed by oxidation reaction, and its structure was investigated using proton nuclear magnetic resonance ( 1 H-NMR) and Fourier-transform infrared (FT-IR) spectroscopy. Then, the fabricated PES-COOH-ZnYCdO nanocomposites (NCs) were characterized using common characterization techniques which include: scanning electron microscope (SEM), X-ray powder diffraction (XRD), FT-IR, thermal analysis, SEM with energy dispersive X-Ray (EDX) spectroscopy and transmission electron microscopy (TEM). FT-IR and XRD analysis confirmed the interactions between carboxylate ions present on the polymer surface metric and the metals that were present as ZnYCdO nanoparticles. Based on values calculated from FT-IR spectra of the PES-COOH-ZnYCdO NCs, the metals and carboxylate ions formed bindentate complexes. Also, the signal peaks of the XRD for ZnYCdO were shifted to a lower degree which also confirmed the interactions between the nanoparticles and PES-COOH. A selective Cd 2+ metal ion sensor was fabricated by coating of a glassy carbon electrode (GCE) with the slurry of PES-COOH-ZnYCdO NCs polymers. The NCs assembled film onto GCE was implemented to successive detection of Cd 2+ metal ion in phosphate buffer medium. To evaluate the sensor analytical performances, a calibration curve has been plotted from current versus concentration of electrolyte (Cd 2+ ion). It is found linear (r 2 = 0.9939) over linear dynamic range (LDR) of 0.1 nM~0.1 mM concentration of Cd 2+ ion by electrochemical approach. The sensitivity and detection limit (DL) are 5.4589 μAμM −1 cm −2 and 17.39 ± 0.87 pM respectively were calculated from the slope of calibration plot. Therefore, the resultant Cd 2+ sensor shows good sensitivity, reproducibility with high accuracy, wider dynamic range, short response time, very lower detection limit and long-term stability with similar performances. Journal of Polymer Research (2018) 25: 262 https://doi.org/10.1007/s10965-018-1643-y PES-COOH PES-COOH-ZnYCdO (2%) PES-COOH-ZnYCdO (5%) PES-COOH-ZnYCdO (10%) PES-COOH-ZnYCdO (20%) 3401.2 262 Page 6 of 15 J Polym Res (2018) 25: 262 Fig. 2 FT-IR spectra of (a) PES, PES-COCH 3 , and PES-COOH and (b) PES-COOH and PES-COOH-ZnYCdO (2%), PES-COOH-ZnYCdO (5%), PES-COOH-ZnYCdO (10%), and PES-COOH-ZnYCdO (20%)

Block-copolymers with Polyphenyl-α-Naphtylsilane Fragments in Dimethylsiloxane Chain, 2006

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