Q2. What are the main causes for a good polymer-polymer compatibility?
Hydrogen bonding and dipole-dipole interactions are the main causes for a good polymer-polymer miscibility and compatibility [6–9].
Q3. What are the two polarizations responsible for the lower dielectric losses?
The electronic and ionic polarizations are more effective at higher frequencies which are responsible for the lower dielectric losses.
Q4. What is the conductivity of the polymer blend?
The conductivity of the polymer blend depends on the concentration of filler polymer, the tendency of the filler polymer to aggregate, and the morphology of the matrix polymer.
Q5. What is the spectroscopic method used to evaluate optical properties of PEOX-P?
The ultraviolet-visible (UV-Vis) spectroscopy was utilised to evaluate various optical properties of blends such as absorption band edge, optical energy band gap, and Urbach energy.
Q6. What are the main applications of polymer blends?
bio-degradable and bio-compatible polymer blends have pharmaceutical applications, especially in transdermal drug delivery system (TDDS) [18,19].
Q7. What is the effect of PVP on the absorption of light?
Aggregation of PVP in blends with higher PVP content (i.e. 40, 60, and 80 wt%) resists the absorption of incident light, and will result in less absorption.
Q8. Why is the high DC in the PVP blend due to the formation of a conducting path?
The high DC in the blend with 20 wt% PVP is due to the formation of a conducting path which made it easier for the electrical charge to hop through.
Q9. What are the main advantages of polymer blends?
Polymer blends have attracted substantial attention due to their technological importance for a variety of applications such as materials for fuel cells, electrostatic charge dissipation, embedded capacitors, electrochemical sensors, and in photonics, electronics and biotechnology [13–15].
Q10. What is the effect of the interfaces between PEOX and PVP?
According to Maxwell-Wagner-Sillar interfacial model, the interfaces between PEOX and PVP segments acts as potential barrier, and the charge carriers in the segment behaves like charges in a potential well.
Q11. Why are tan values higher than pure PEOX?
The higher values of tan are due to the increase in the number of self-associated bonds formed by the intermolecular interaction.
Q12. What is the effect of the interaction between PEOX and PVP?
Theeffective interaction between –CH3 groups of PEOX and carbonyl groups of PVP reduces the cohesive forces between the macromolecular PEOX and PVP polymer chains, which improveAC CEP TED MAN USC RIP Tthe segmental mobility in the blend.
Q13. Why is the PVP matrix less conductive?
Twhen the PVP is added at larger concentration to the PEOX matrix, and also, due to fewer free electrons available for conduction process.
Q14. What is the value of ln versus hE?
Taking the natural logarithm on both sides of equation (3),0ln ln hE (4)The value of E can be obtained from the slope of linear portion in a graph of ln versus h.
Q15. What is the relative permittivity of a material?
The relative permittivity, *, of a material is a complex quantity:* j (5)where ' is the dielectric constant (i.e. real part of *), and '' is the dielectric energy loss (i.e.imaginary part of *).
Q16. What are the optical and electrical properties of PEOX?
The optical and electrical properties of polymer blends are very important in addition to their mechanical and thermal properties.