Molecular relaxation and dynamic rheology of “cluster phase”-free ionomers based on lanthanum(iii)-neutralized low-carboxylated poly(methyl methacrylate)

RSC Advances ◽  
2016 ◽  
Vol 6 (70) ◽  
pp. 66336-66345 ◽  
Author(s):  
Lina Zhang ◽  
Biwei Qiu ◽  
Yihu Song ◽  
Qiang Zheng
Keyword(s):  
Methyl Methacrylate ◽  
Dynamic Rheology ◽  
Molecular Relaxation ◽  
Poly Methyl Methacrylate ◽  
Cluster Phase

La(iii)-neutralized low-carboxylated poly(methyl methacrylate)-based ionomers free of cluster phase exhibit a fluid-to-solid transition assigned to an interconnected multiplets network.

Ethanol Induced Shape Recovery and Swelling in Poly(methyl methacrylate) and Applications in Fabrication of Microlens Array

2012 ◽  
Vol 77 ◽  
pp. 354-358 ◽  
Author(s):  
Yong Zhao ◽  
Chang Chun Wang ◽  
Wei Min Huang ◽  
Hendra Purnawali
Keyword(s):  
Methyl Methacrylate ◽  
Shape Recovery ◽  
Cost Effective ◽  
Microlens Array ◽  
Surface Patterning ◽  
The Other ◽  
Molecular Relaxation ◽  
Microlens Arrays ◽  
Poly Methyl Methacrylate ◽  
Effective Manner

The transportation phenomenon of ethanol in pre-deformed poly(methyl methacrylate) (PMMA) is systematically investigated. Two different phenomena simultaneously occur during this process. One is shape recovery, which is resulted from the ethanol induced softening and plasticization of PMMA. The other is swelling, which is produced by the ethanol induced molecular relaxation. Based on this study, a novel surface patterning method is proposed to fabricate PMMA microlens arrays in a simple and cost-effective manner.

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