Effect of the mold temperature on the electrical properties of carbon-black-loaded polystyrene/SB block copolymer blends

Author(s):  
Bluma G. Soares ◽  
Katia M. N. Gamboa ◽  
Angelo J. B. Ferreira ◽  
Edson Ueti ◽  
Sergio S. Camargo
Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 353 ◽  
Author(s):  
Arslan Umer ◽  
Faroha Liaqat ◽  
Azhar Mahmood

This research endeavor aimed to develop thin film blends of polypyrrole (PPy) and poly (styrene-isoprene-styrene) (SIS) with MoO3 as a nanofiller for improved mechanical and electrical properties to widen its scope in the field of mechatronics. This study reports blends of polypyrrole (PPy) and poly (styrene-isoprene-styrene) (SIS) tri-block copolymer showing improved mechanical and electrical attributes while employing MoO3 nanobelts as nanofillers that additionally improves the abovementioned properties in the ensuing nanocomposites. The synthesis of PPy/SIS blends and MoO3/PPy/SIS nanocomposites was well corroborated with XRD, SEM, FTIR, and EDS analysis. Successful blending of PPy was yielded up to 15 w/w% PPy in SIS, as beyond this self-agglomeration of PPy was observed. The results showed a remarkable increase in the conductivity of insulating SIS copolymer from 1.5 × 10−6.1 to 0.343 Scm−1 and tensile strength up to 8.5 MPa with the 15 w/w% PPy/SIS blend. A further enhancement of the properties was recorded by embedding MoO3 nanobelts with varying concentrations of the nanofillers into 15 w/w% PPy/SIS blends. The mechanical strength of the polymeric nanocomposites was enhanced up to 11.4 MPa with an increase in conductivity up to 1.51 Scm−1 for 3 w/w% MoO3/PPy-SIS blends. The resultant product exhibited good potential for electro-mechanical dual applications.


1997 ◽  
Vol 38 (1) ◽  
pp. 95-100 ◽  
Author(s):  
K. M. N. Gamboa ◽  
A. J. B. Ferreira ◽  
S. S. Camargo ◽  
B. G. Soares

2021 ◽  
pp. 2103697
Author(s):  
Hongkyu Eoh ◽  
Youngdoo Jung ◽  
Chanho Park ◽  
Chang Eun Lee ◽  
Tae Hyun Park ◽  
...  

2009 ◽  
Vol 151 ◽  
pp. 67-71 ◽  
Author(s):  
Wai Kit Li ◽  
Y.W. Wong

Electrospinning is an efficient technique for the fabrication of polymer nanofibers. The charges inside the polymer jet tend to repel each other so as to stretch and reduce the diameter of the polymer fibers. By rotating the collector at a fast angular speed, nanofibers with specific orientation can be obtained. In this study, nanofibers of Polyethylene oxide (PEO) with carbon black were prepared by electrospinning. PEO was dissolved in a mixture of water and ethanol. PEO is known as an electrolytic polymer. With the blending of carbon black powders, its electrical properties along the fiber direction were investigated. The fiber morphology and characteristics were studied by SEM and polarized FTIR.


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