Effect of cell morphology on electrical properties and electromagnetic interference shielding of graphene-poly(methyl methacrylate) microcellular foams

2018 ◽  
Vol 157 ◽  
pp. 217-227 ◽  
Author(s):  
Seyed Esmaeil Zakiyan ◽  
Hamed Azizi ◽  
Ismaeil Ghasemi
Keyword(s):  
Electrical Properties ◽  
Methyl Methacrylate ◽  
Cell Morphology ◽  
Electromagnetic Interference ◽  
Electromagnetic Interference Shielding ◽  
Poly Methyl Methacrylate ◽  
Microcellular Foams

Segregated Hybrid Poly(methyl methacrylate)/Graphene/Magnetite Nanocomposites for Electromagnetic Interference Shielding

2017 ◽  
Vol 9 (16) ◽  
pp. 14171-14179 ◽  
Author(s):  
Farbod Sharif ◽  
Mohammad Arjmand ◽  
Aref Abbasi Moud ◽  
Uttandaraman Sundararaj ◽  
Edward P. L. Roberts
Keyword(s):  
Methyl Methacrylate ◽  
Electromagnetic Interference ◽  
Electromagnetic Interference Shielding ◽  
Poly Methyl Methacrylate

Microcellular Foams Prepared by Exposing (CO2 + H2O) Laden Polymers to Microwaves

2005 ◽  
Vol 24 (4) ◽  
pp. 223-227
Author(s):  
Zhiyi Zhang ◽  
Shiying Lu ◽  
A. Victoria Nawaby ◽  
Y. Paul Handa
Keyword(s):  
Water Molecule ◽  
Methyl Methacrylate ◽  
Exposure Time ◽  
Cell Morphology ◽  
Nucleation And Growth ◽  
Poly Methyl Methacrylate ◽  
Microcellular Foams ◽  
Foaming Process ◽  
Conventional Oven

Polymers conditioned with compressed CO2 and H2O underwent rapid foaming when exposed to microwaves using a conventional oven. The rapidly oscillating water molecule dipoles generated enough heat to allow nucleation and growth of closed cells. Microcellular foams with cells less than 10 μm were produced from polymers such as poly(methyl methacrylate) and polycarbonate. The technique provides a fast foaming process whereby the cell morphology can be easily controlled by adjusting the microwaves intensity and flux, and exposure time.

Single wall carbon nanohorn (SWCNH)/graphene nanoplate/poly(methyl methacrylate) nanocomposites: a promising material for electromagnetic interference shielding applications

RSC Advances ◽  
2015 ◽  
Vol 5 (86) ◽  
pp. 70482-70493 ◽  
Author(s):  
Ranadip Bera ◽  
Sumanta Kumar Karan ◽  
Amit Kumar Das ◽  
Sarbaranjan Paria ◽  
Bhanu Bhusan Khatua
Keyword(s):  
Methyl Methacrylate ◽  
Electromagnetic Interference ◽  
Promising Material ◽  
Electromagnetic Interference Shielding ◽  
Single Wall Carbon ◽  
Poly Methyl Methacrylate ◽  
Pmma Matrix ◽  
Graphene Nanoplates

Single wall carbon nanohorn (SWCNH)/graphene nanoplates (GNP)/poly(methyl methacrylate) (PMMA) nanocomposites were prepared through addition of GNP/PMMA bead into the SWCNH dispersed PMMA matrix during its polymerization.

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