Cell growth on immobilized cell-growth factorII. Adhesion and growth of fibroblast cells on poly(methyl methacrylate) membrane immobilized with proteins of various kinds

Biomaterials ◽  
1992 ◽  
Vol 13 (11) ◽  
pp. 789-794 ◽  
Author(s):  
Y ITO ◽  
S LIU ◽  
M NAKABAYASHI ◽  
Y IMANISHI
Keyword(s):  
Cell Growth ◽  
Methyl Methacrylate ◽  
Fibroblast Cells ◽  
Immobilized Cell ◽  
Poly Methyl Methacrylate

scholarly journals An experimental study on the micro- and nanocellular foaming of polystyrene/poly(methyl methacrylate) blend composites

2019 ◽  
Vol 39 (10) ◽  
pp. 926-933 ◽  
Author(s):  
Davoud Jahani ◽  
Hamidreza Azimi ◽  
Amin Nazari
Keyword(s):  
Experimental Study ◽  
Calcium Carbonate ◽  
Cell Growth ◽  
Pressure Drop ◽  
Methyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
Cell Nucleation ◽  
Measured Liquid ◽  
Pmma Blends ◽  
Phase Phase

Abstract Polystyrene/poly(methyl methacrylate) (PS/PMMA) blends in 80:20, 50:50, and 20:80 ratios with and without calcium carbonate nanoparticles were prepared. n-Pentane was then used to foam the samples in an autoclave. After the diffusion of n-pentane gas into the polymer matrix, the samples and the gas were simultaneously cooled to obtain the liquid n-pentane phase. Phase change to liquid provided the required pressure drop for cell nucleation and consequent cell growth. The solubility of n-pentane in the samples was measured. Liquid n-pentane trapped inside created micro- and nanopores, forming a foam with closed cells. Experiments were carried out in different compositions of the materials, with and without nanoparticles, and the cell morphologies were characterized. The results of this work show that nanocellular structures can be achieved when calcium carbonate nanoparticles are added to PS/PMMA blends.

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