Diffusion of Water in Amorphous Polymers at Different Temperatures Using Molecular Dynamics Simulation

Dermitzaki, E.; Bauer, Jörg; Wunderle, Bernhard; Michel, B.

doi:10.1109/estc.2006.280098

Cited by 8 publications

(1 citation statement)

References 41 publications

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“…Magnetic treatment can significantly lower the pH of the solution and, in the meantime, reduce the deposition of scale by 48% [5]. The activation energy of water molecules at high temperatures is 3.16 kcal•mol −1 higher than that at low temperatures and is close to the hydrogen bond energy between water and polyacrylate [6]. The diffusion coefficient of water molecules increases continuously as the temperature of aqueous solutions increases, while the diffusion coefficients of Ca 2+ and CO 3 2− are relatively small at 293 K [7].…”

Section: Introductionmentioning

confidence: 90%

Laboratory Experimental Study on Influencing Factors of Drainage Pipe Crystallization in Highway Tunnel in Karst Area

Liu

Xiong

et al. 2021

Coatings

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The crystalline blockage of tunnel drainage pipes in a karst area seriously affects the normal operation of drainage system and buries hidden dangers for the normal operation of the tunnel. In order to obtain the influencing factors and laws of tunnel drainage pipe crystallization in a karst area, based on the field investigation of crystallization pipe plugging, the effects of groundwater velocity, drainage pipe diameter, drainage pipe material, and structure on the crystallization law of tunnel drainage pipe in karst area are studied by indoor model test. The results show that: (1) With the increase of drainage pipe diameter (20–32 mm), the crystallinity of drainage pipes first increases and then decreases. (2) With the increase of water velocity in the drainage pipe (22.0–63.5 cm·s−1), the crystallinity of the drainage pipes gradually decreases from 1.20 g to 0.70 g. (3) The crystallinity of existing material drainage pipe is: M3 (poly tetra fluoroethylene) > M2 (pentatricopeptide repeats) > M4 (high density polyethylene) > M1 (polyvinyl chloride); M8 (polyvinyl chloride + coil magnetic field) is used to change the crystallinity of drain pipe wall material. (4) When the groundwater flow rate is 34.5 cm·s−1, M1 (polyvinyl chloride) and M8 (polyvinyl chloride + coil magnetic field) can be selected for the tunnel drainage pipe. The research on the influencing factors of tunnel drainage pipe crystallization plugging fills a gap in the research of tunnel drainage pipe crystallization plugging. The research results can provide a basis for the prevention and treatment technology of tunnel drainage pipe crystallization plugging.

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Section: Introductionmentioning

confidence: 90%

Laboratory Experimental Study on Influencing Factors of Drainage Pipe Crystallization in Highway Tunnel in Karst Area

Liu

Xiong

et al. 2021

Coatings

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Nanopackaging: Nanotechnologies and Electronics Packaging

Morris¹

2008

Nanopackaging

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