Bond kinetics in simulated telechelic associating polymer networks

2016 ◽  
Vol 13 (10/11/12) ◽  
pp. 935
Author(s):  
Mark Wilson ◽  
Avinoam Rabinovitch ◽  
Arlette R.C. Baljon
Keyword(s):  
Polymer Networks ◽  
Bond Kinetics ◽  
Associating Polymer

Effects of fluctuations of cross-linking points on viscoelastic properties of associating polymer networks

2012 ◽  
Vol 51 (11-12) ◽  
pp. 1021-1039 ◽  
Author(s):  
Tsutomu Indei ◽  
Jay D. Schieber ◽  
Jun-ichi Takimoto
Keyword(s):  
Viscoelastic Properties ◽  
Polymer Networks ◽  
Cross Linking ◽  
Associating Polymer

scholarly journals Associating Polymer Networks Based on Cyclodextrin Inclusion Compounds for Heavy Oil Recovery

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Xi Li ◽  
Zheng Shu ◽  
Pingya Luo ◽  
Zhongbin Ye
Keyword(s):  
Oil Recovery ◽  
Heavy Oil ◽  
Polymer Networks ◽  
Adsorbed Layer ◽  
Water Soluble ◽  
Heavy Oil Recovery ◽  
Original Oil In Place ◽  
Hydrolyzed Polyacrylamide ◽  
The Relationship ◽  
Associating Polymer

This work evaluates an approach to improve the enhanced heavy oil recovery performance of hydrophobic associating polymer. A polymeric system based on water-soluble hydrophobic associating polymer (WSHAP) and cyclodextrin (CD) polymer was proposed in this work. Addition of CD polymer to WSHAP forms interpolymer bridges by inclusion of CD groups with hydrophobic tails, and thereby the network structure is strengthened. The proposed system offers good viscoelasticity, pronounced shear thinning, and interesting viscosity-temperature relations. Sand pack tests indicated that the proposed system can build high resistance factor during the propagation in porous media, and its moderate adsorption phenomenon was represented by the thickness of the adsorbed layer. The relationship between effective viscosity and oil recovery increment indicated that the proposed system can significantly reduce the residual oil saturation due to the “piston-like” propagation. The overall oil recovery was raised by 5.7 and 24.5% of the original oil in place compared with WSHAP and partially hydrolyzed polyacrylamide (HPAM), respectively.

Computational Study of the Structure and Rheological Properties of Self-Associating Polymer Networks

2015 ◽  
Vol 48 (17) ◽  
pp. 6313-6320 ◽  
Author(s):  
Mark Wilson ◽  
Avinoam Rabinovitch ◽  
Arlette R. C. Baljon
Keyword(s):  
Rheological Properties ◽  
Computational Study ◽  
Polymer Networks ◽  
Associating Polymer

Crosslinker Chemistry Determines the Uptake Potential of Perfluorinated Alkyl Substances by β-Cyclodextrin Polymers

2018 ◽  
Author(s):  
Leilei Xiao ◽  
Casey Ching ◽  
Yuhan Ling ◽  
Mohammadreza Nasiri ◽  
Max Justin Klemes ◽  
...  
Keyword(s):  
Binding Affinity ◽  
Polymer Networks ◽  
Cyclodextrin Polymer ◽  
Perfluorinated Alkyl Substances ◽  
Cyclodextrin Polymers

This work describes several crosslinked β-cyclodextrin polymer networks and correlates the crosslinker chemistry with binding affinity for per- and polyfluorinated alkyl substances (PFASs), including PFOA and PFOS.

Design and Synthesis of Two-Dimensional Covalent Organic Frameworks with Four-Arm Cores: Prediction of Remarkable Ambipolar Charge-Transport Properties

2019 ◽  
Author(s):  
Simil Thomas ◽  
Hong Li ◽  
Raghunath R. Dasari ◽  
Austin Evans ◽  
William Dichtel ◽  
...  
Keyword(s):  
Charge Transport ◽  
Organic Semiconductors ◽  
Density Functional ◽  
Polymer Networks ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
X Ray Diffraction ◽  
Zinc Porphyrin ◽  
Design And Synthesis ◽  
Predicted Values

<p>We have considered three two-dimensional (2D) π-conjugated polymer networks (i.e., covalent organic frameworks, COFs) materials based on pyrene, porphyrin, and zinc-porphyrin cores connected <i>via</i> diacetylenic linkers. Their electronic structures, investigated at the density functional theory global-hybrid level, are indicative of valence and conduction bands that have large widths, ranging between 1 and 2 eV. Using a molecular approach to derive the electronic couplings between adjacent core units and the electron-vibration couplings, the three π-conjugated 2D COFs are predicted to have ambipolar charge-transport characteristics with electron and hole mobilities in the range of 65-95 cm<sup>2</sup>V<sup>-1</sup>s<sup>-1</sup>. Such predicted values rank these 2D COFs among the highest-mobility organic semiconductors. In addition, we have synthesized the zinc-porphyrin based 2D COF and carried out structural characterization via powder X-ray diffraction and surface area analysis, which demonstrates the feasability of these electroactive networks.</p>

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