Spectral Studies of Hydrogen Bonding and Interaction in the Absorption Processes of Sulfur Dioxide in Poly(ethylene glycol) 400 + Water Binary System

2010 ◽  
Vol 49 (5) ◽  
pp. 2025-2030 ◽  
Author(s):  
Jianbin Zhang ◽  
Fang Han ◽  
Xionghui Wei ◽  
Like Shui ◽  
Han Gong ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Sulfur Dioxide ◽  
Binary System ◽  
Ethylene Glycol ◽  
Spectral Studies ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

The role of hydrogen bonding in alginate/poly(acrylamide-co-dimethylacrylamide) and alginate/poly(ethylene glycol) methyl ether methacrylate-based tough hybrid hydrogels

RSC Advances ◽  
2015 ◽  
Vol 5 (71) ◽  
pp. 57678-57685 ◽  
Author(s):  
Zhi Wei Low ◽  
Pei Lin Chee ◽  
Dan Kai ◽  
Xian Jun Loh
Keyword(s):  
Hydrogen Bonding ◽  
Elastic Modulus ◽  
Ethylene Glycol ◽  
Methyl Ether ◽  
Poly Ethylene Glycol ◽  
Hybrid Hydrogels ◽  
Poly Ethylene ◽  
Glycol Methyl Ether ◽  
Poly Acrylamide

Hybrid hydrogels, with an elastic modulus and compressive toughness of 350 kPa and 70 J m−3, was synthesized and reported here.

Absorption of dilute sulfur dioxide in aqueous poly-ethylene glycol 400 solutions at T=308.15K and p=122.60kPa

2011 ◽  
Vol 43 (10) ◽  
pp. 1463-1467 ◽  
Author(s):  
Jianbin Zhang ◽  
Lihua Liu ◽  
Tanrui Huo ◽  
Zhanying Liu ◽  
Tong Zhang ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

scholarly journals Chain-End Effects on Supramolecular Poly (Ethylene Glycol) Polymers

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2235
Author(s):  
Ana Brás ◽  
Ana Arizaga ◽  
Uxue Agirre ◽  
Marie Dorau ◽  
Judith Houston ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Relaxation Time ◽  
Ethylene Glycol ◽  
Interaction Parameter ◽  
Path Model ◽  
Poly Ethylene Glycol ◽  
Scanning Calorimetry ◽  
End Effects ◽  
Structure And Dynamics ◽  
Poly Ethylene

In this work we present a fundamental analysis based on small-angle scattering, linear rheology and differential scanning calorimetry (DSC) experiments of the role of different hydrogen bonding (H-bonding) types on the structure and dynamics of chain-end modified poly(ethylene glycol) (PEG) in bulk. As such bifunctional PEG with a molar mass below the entanglement mass Me is symmetrically end-functionalized with three different hydrogen bonding (H-bonding) groups: thymine-1-acetic acid (thy), diamino-triazine (dat) and 2-ureido-4[1H]-pyrimidinone (upy). A linear block copolymer structure and a Newtonian-like dynamics is observed for PEG-thy/dat while results for PEG-upy structure and dynamics reveal a sphere and a network-like behavior, respectively. These observations are concomitant with an increase of the Flory–Huggins interaction parameter from PEG-thy/dat to PEG-upy that is used to quantify the difference between the H-bonding types. The upy association into spherical clusters is established by the Percus–Yevick approximation that models the inter-particle structure factor for PEG-upy. Moreover, the viscosity study reveals for PEG-upy a shear thickening behavior interpreted in terms of the free path model and related to the time for PEG-upy to dissociate from the upy clusters, seen as virtual crosslinks of the formed network. Moreover, a second relaxation time of different nature is also obtained from the complex shear modulus measurements of PEG-upy by the inverse of the angular frequency where G’ and G’’ crosses from the network-like to glass-like transition relaxation time, which is related to the segmental friction of PEG-upy polymeric network strands. In fact, not only do PEG-thy/dat and PEG-upy have different viscoelastic properties, but the relaxation times found for PEG-upy are much slower than the ones for PEG-thy/dat. However, the activation energy related to the association dynamics is very similar for both PEG-thy/dat and PEG-upy. Concerning the segmental dynamics, the glass transition temperature obtained from both rheological and calorimetric analysis is similar and increases for PEG-upy while for PEG-thy/dat is almost independent of association behavior. Our results show how supramolecular PEG properties vary by modifying the H-bonding association type and changing the molecular Flory–Huggins interaction parameter, which can be further explored for possible applications.

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