The elastic behaviour under hydrostatic pressure of poly(methyl methacrylate) and its fully deuterated form

1990 ◽  
Vol 25 (11) ◽  
pp. 4654-4657 ◽  
Author(s):  
P. E. Ngoepe ◽  
E. F. Lambson ◽  
G. A. Saunders ◽  
B. Bridge
Keyword(s):  
Hydrostatic Pressure ◽  
Methyl Methacrylate ◽  
Elastic Behaviour ◽  
Poly Methyl Methacrylate

scholarly journals Phase Structure and Properties of Ternary Polylactide/Poly(methyl methacrylate)/Polysilsesquioxane Blends

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1033
Author(s):  
Anna Kowalewska ◽  
Agata S. Herc ◽  
Joanna Bojda ◽  
Maria Nowacka ◽  
Mariia Svyntkivska ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Methyl Methacrylate ◽  
Chemical Properties ◽  
Tensile Tests ◽  
Elastic Behaviour ◽  
Structure And Properties ◽  
Depth Sensing ◽  
Scanning Calorimetry ◽  
Poly Methyl Methacrylate ◽  
Solution Blending

Ternary blends of polylactide (PLA, 90 wt.%) and poly(methyl methacrylate) (PMMA, 10 wt.%) with functionalized polysilsesquioxanes (LPSQ-R) were obtained by solution blending. R groups in LPSQ containing hydroxyethyl (LPSQ-OH), methylglycolic (LPSQ-COOMe) and pentafluorophenyl (LPSQ-F5) moieties of different chemical properties were designed to modify PLA blends with PMMA. The effect of the type of LPSQ-R and their content, 1–3 wt.%, on the structure of the blends was studied with scanning electron microscopy (SEM) combined with energy dispersive spectroscopy (SEM-EDS), dynamic mechanical thermal analysis (DMTA) and Raman spectroscopy. Differential scanning calorimetry (DSC) and tensile tests also showed various effects of LPSQ-R on the thermal and mechanical properties of the blends. Depth-sensing indentation was used to resolve spatially the micro- and nano-scale mechanical properties (hardness and elastic behaviour) of the blends. The results showed clearly that LPSQ-R modulate the structure and properties of the blends.

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