Effect of main and side chain length change of polycarboxylate‐ether‐based water‐reducing admixtures on the fresh state and mechanical properties of cementitious systems

2020 ◽  
Author(s):  
Süleyman Özen ◽  
Muhammet Gökhan Altun ◽  
Ali Mardani‐Aghabaglou ◽  
Kambiz Ramyar
Keyword(s):  
Mechanical Properties ◽  
Chain Length ◽  
Length Change ◽  
Side Chain ◽  
Side Chain Length ◽  
Fresh State ◽  
Cementitious Systems ◽  
Polycarboxylate Ether

scholarly journals Effect of Side Chain Length on Polycarboxylate Superplasticizer in Aqueous Solution: A Computational Study

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 346 ◽  
Author(s):  
Po-Hsiang Chuang ◽  
Yu-Hui Tseng ◽  
Yunhui Fang ◽  
Miaomiao Gui ◽  
Xiuxing Ma ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Chain Length ◽  
Computational Study ◽  
Side Chain ◽  
Water Molecules ◽  
Side Chain Length ◽  
Dynamics Simulations ◽  
Chain Lengths ◽  
Polycarboxylate Ether ◽  
Diffusion Properties

Molecular dynamics simulations were carried out to study the conformations of polycarboxylate ether (PCE) superplasticizers with different side chain lengths in aqueous solution. For four types of PCE molecules—PCE1, PCE2, PCE3, and PCE4—the steric hindrance between the PCE molecules increased with increasing side chain length. The side chain length not only affects water mobility but also affects the distribution of water molecules in the system. Simulation results indicate that water molecules were trapped by the PCE molecules, reducing the diffusion properties. PCE molecules with long side chains have more water molecules probability around the main chain and fewer water molecules probability near the side chain. Microscopic-level knowledge of the interaction between superplasticizer and water molecules facilitates understanding of the performance of superplasticizers in cement systems.

The effect of side-chain length of cellulose fatty acid esters on their thermal, barrier and mechanical properties

Cellulose ◽  
2016 ◽  
Vol 24 (2) ◽  
pp. 505-517 ◽  
Author(s):  
Pia Willberg-Keyriläinen ◽  
Jari Vartiainen ◽  
Ali Harlin ◽  
Jarmo Ropponen
Keyword(s):  
Mechanical Properties ◽  
Fatty Acid ◽  
Chain Length ◽  
Fatty Acid Esters ◽  
Side Chain ◽  
Thermal Barrier ◽  
Side Chain Length ◽  
Acid Esters
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