Synthesis of diphenylamine derivatives on Pd/C catalyst

Kim, Byong-Sam; Jung, Donggeun; Kim, Kiseok; Lee, Tae-Jin; Kim, Jae‐Chang; Kim, Dong‐Hyun

doi:10.1007/bf02707103

Cited by 11 publications

(13 citation statements)

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“…A similar result was also reported by Choudhary et al . and Kim and Lee For the PP/PBE blend, only one transition peak could be observed for all amounts of PBE, and the transition temperatures of the PP/PBE blends were located between that of pure PP and pure PBE. In addition, the transition temperature decreased with increasing PBE content, indicating that PP and PBE were fully compatible in the blend at all PBE contents.…”

Section: Resultssupporting

confidence: 90%

Effects of compatibility on foaming behavior of polypropylene/polyolefin elastomer blends prepared using a chemical blowing agent

Kim

Lee

et al. 2017

J of Applied Polymer Sci

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Polypropylene (PP) exhibits poor foaming property because of its low melt strength arising from its linear chains and relatively narrow molecular weight distribution. To fabricate a PP foam without crosslinking, PP should be blended with polyolefin elastomers (POEs) using chemical blowing agents. In this study, the effects of POE types and contents in a PP matrix were studied by analyzing the melt flow index, morphology, and thermal and dynamic viscoelastic properties. Furthermore, the POE type/content and foaming conditions (i.e., foaming temperature and oven residence time) were optimized by investigating the volume expansion ratio (VER), cross-sectional morphology, and hardness of the PP/POE foams. We focused on how the foaming behavior and foaming conditions were affected by the compatibility and POE content in the PP/POE blend. The results demonstrated that the optimal VER of 9 was obtained at 30 wt % POE and foaming conditions of 220 8C for 9 min.

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Section: Resultssupporting

confidence: 90%

Effects of compatibility on foaming behavior of polypropylene/polyolefin elastomer blends prepared using a chemical blowing agent

Kim

Lee

et al. 2017

J of Applied Polymer Sci

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“…Removing these particle contaminants is difficult since a submicron particle can adhere to a surface with a force that is over a million times its weight. 18 A cleaning technique for submicron particles should be effective for particle removal, not cause surface damage, or add any extra contamination to the surface. Additionally, we want the process to be efficient, simple, fast, and chlorofluorocarbon-free.…”

Section: Laser-assisted Particle Removalmentioning

confidence: 99%

Clustered Ensemble Averaging: A Technique for Visualizing Qualitative Features of Stochastic Simulations

Smith¹,

Banks²,

Druckman³

et al. 2006

j comput theor nanosci

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Stochastic simulations of fluid flow deal with the evolution of uncertainties in initial and boundary conditions, parameters, and physical models. These uncertainties may lead to qualitatively different behaviors of the flow, raising the question of how to visualize random flow variables in a meaningful way. Our approach is to cluster the simulation data by qualitative phenomenon and then to compute average flow quantities within each cluster, a technique we call "clustered ensemble averaging." This tactic extends the basic visualization strategy of extracting features from within a computational domain defined within time and space. The abstract features we seek are defined across the space of all possible simulations: each feature (cluster) is the subspace of simulations that share a basic behavior. We illustrate this technique on data from molecular dynamics simulations of laser-assisted particle removal, where the explosive evaporation of a laser-heated fluid acts on minute particle contaminants on a substrate, sometimes removing them and sometimes failing to do so. We ran the simulation a hundred times, comprising a hundred samples of the simulation space, and clustered each according to the behavior it exhibits. The images that result from clustered ensemble averaging reveal characteristics common to each cluster that are hidden when the average is calculated over all outcomes.

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“…Smart polymers, also known as stimuli‐responsive polymers, or environmentally sensitive polymers, are macromolecules that can respond to external stimuli . The stimuli include temperature, pH, pressure, light, sound waves, ions, electric fields, and magnetic fields . Among the stimuli, heat is easily obtained and controlled, and light can be easily localized in time and space due to its specific physical properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Temperature and Light Sensitive Copolymers with Controlled Aggregation during Phase Transitions

Ding

Zhang

et al. 2019

Macro Chemistry & Physics

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Two thermosensitive copolymers of acrylates (PMP/PEP) and a thermo/light sensitive copolymer of acrylate with acrylamide (PMABz) are synthesized via a ring‐opening reaction and subsequent radical polymerization using a facile one‐pot method. The lower critical solution temperature (LCST) of PMP and PEP shows a dependence on the content of the structural unit and can be easily tuned to 18–35 °C by mercaptoethanol‐mediated control of the molecular weight. The isomerization of PMABz can be reversibly induced by alternating irradiation at 365 nm to produce the cis form and at 254 nm to produce the trans form. The LCST of cis‐PMABz (40.3 °C) is significantly higher than that of trans‐PMABz (37.8 °C) because of its higher hydrophilicity. Furthermore, the particle size of aggregated PMABz can be controlled from 665 nm (for the cis form) to 996 nm (for the trans form) during the heating run. After quenching the PMABz solution, PMABz particles have repeating patterns, such as leaf veins or hollow containers, indicating their potential applicability.

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Synthesis of diphenylamine derivatives on Pd/C catalyst

Cited by 11 publications

References 0 publications

Effects of compatibility on foaming behavior of polypropylene/polyolefin elastomer blends prepared using a chemical blowing agent

Effects of compatibility on foaming behavior of polypropylene/polyolefin elastomer blends prepared using a chemical blowing agent

Clustered Ensemble Averaging: A Technique for Visualizing Qualitative Features of Stochastic Simulations

Synthesis of Temperature and Light Sensitive Copolymers with Controlled Aggregation during Phase Transitions

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