Development of miscible blends of polyamide-6 and manganese sulfonated polystyrene using specific interactions

1991 ◽  
Vol 24 (15) ◽  
pp. 4381-4385 ◽  
Author(s):  
Xinya Lu ◽  
R. A. Weiss
Keyword(s):  
Polyamide 6 ◽  
Specific Interactions ◽  
Sulfonated Polystyrene ◽  
Miscible Blends

Development Of Miscible Blends From Intrapolymer Repulsive Interactions: Polycarbonate/Polystyrene Ionomers

1996 ◽  
Vol 461 ◽  
Author(s):  
R. Xie ◽  
R. A. Weiss
Keyword(s):  
Molecular Weight ◽  
Weak Interactions ◽  
Solution Temperature ◽  
Strong Interactions ◽  
Sulfonated Polystyrene ◽  
Bisphenol A Polycarbonate ◽  
Critical Solution Temperature ◽  
Miscible Blends ◽  
Upper Critical Solution Temperature ◽  
Repulsive Interactions

ABSTRACTThe phase behavior of blends of zinc sulfonated polystyrene (ZnSPS) and bisphenol-A polycarbonate (PC) was studied as a function of the sulfonation level and the molecular weight of the ZnSPS ionomer. The system exhibits upper critical solution temperature (UCST) behavior. The cloud point temperatures increased with increasing ZnSPS molecular weight and decreased with increasing sulfonation level. No strong interactions between ZnSPS and PC were detected by FTIR. The composition dependence of the glass transition temperatures of the miscible blends exhibited negative deviation from linear additi vity, which is consistent with no or weak interactions between ZnSPS and PC. Miscibility is believed to arise from strong repulsive interactions between the charged and uncharged species on the ionomer chain.

Specific Interactions Induced Dispersion and Confinement of Multi-Walled Carbon Nanotubes in Co-continuous Polymer Blends

2008 ◽  
Vol 8 (4) ◽  
pp. 1867-1879 ◽  
Author(s):  
Suryasarathi Bose ◽  
Arup R. Bhattacharyya ◽  
Pravin V. Kodgire ◽  
Ajit R. Kulkarni ◽  
Ashok Misra
Keyword(s):  
Carbon Nanotubes ◽  
Percolation Threshold ◽  
Multiwall Carbon Nanotubes ◽  
Acrylonitrile Butadiene Styrene ◽  
Polyamide 6 ◽  
Strong Impact ◽  
Specific Interactions ◽  
Melt Mixing ◽  
Uniform Dispersion ◽  
High Dielectric

Multiwall carbon nanotubes (MWNT) were melt-mixed with 50/50 co-continuous blends of polyamide 6 (PA6) and acrylonitrile-butadiene-styrene (ABS). Blending sequence and moulding processes were found to have a strong impact on the conductivity of the blends with MWNT. Aggregated nature of the tubes, migration during processing and skin-core morphology generated during mould cooling step were found to be crucial parameters affecting the electrical conductivity of the blends. We report here the role of a reactive modifier: sodium salt of 6-amino hexanoic acid (Na-AHA) aiding in uniform dispersion of the MWNT in the 50/50 PA6/ABS blends and restricting the tubes utilizing specific interactions during melt-mixing in the PA6 phase in the blends. We further varied the MWNT to Na-AHA ratio from 1:1 to 1:15 to optimize the concentration of MWNT required in achieving lower electrical percolation threshold in co-continuous PA6/ABS blends. The associated percolation threshold was observed at ∼0.5 wt% MWNT with high dielectric constant.

Miscibility of polyamide-6 with lithium or sodium sulfonated polystyrene ionomers

1992 ◽  
Vol 25 (21) ◽  
pp. 5774-5782 ◽  
Author(s):  
A. Molnar ◽  
A. Eisenberg
Keyword(s):  
Polyamide 6 ◽  
Sulfonated Polystyrene
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