Q: Advantages and disadvantages relationship of conductance and conductivity.
A: Conductance It is defined as the reciprocal of resistance of a conductor or the ability of any…
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A: The lime or limestone scrubbing process is the most common method for the reduction of the SO2…
Q: What role can craze formation play in toughening of an amorphous polymer? What role can crazing play…
A: A craze is a deformation zone in amorphous polymer and can be divided into precraze and proper…
Q: How can we measure the mass-transfer efficiency in packed towers?
A: The area where the access is restricted there is the use of a packed tower which is used in small…
Q: What is the result of a chain transfer to polymer? Give an example. • How do you account for the…
A: A) Chain transfer to polymer - The chain transfer may takes place in an already existing polymer…
Q: Composite materials must contain more dispersed material and less matrix material.
A: Composite material must contain more dispersed material compare to matrix material.
Q: What is meant by the terms homogeneous and homozygous for insulating materials?
A: An insulating material refers to the material that does not allow electricity to pass through it.…
Q: Describe vacuum forming/thermoforming processes. What are typical thermoformed plastic products?
A: According to Q&A guidelines of Bartleby, we are supposed to answer only one question out of…
Q: Define cohesion
A: Cohesion or cohesive force is the property by which molecules stick together. It is attraction of…
Q: 14. Indicate two important microstructural characteristics for polymers that are considered for…
A: Polymeric fibers are derived from the polymers. Some of the examples of these fibres includes are…
Q: Calculate the anion gap, is it in the normal range? Na 132 mEq/L CI 98 mEq/L HCO3 22 mEq/L O12…
A: The anion gap measures acid-base balance using the concentration of anions, which are not measured.…
Q: 3. Describe the properties of elastomers , fibers, fabrics, and synthetic rubbers.
A: Elastomers are polymers that are having viscosity as well as elasticity and therefore are known as…
Q: Define Teflon and poly(vinyl chloride) (PVC) ?
A: A polymer is a large molecule composed by using several non-similar or similar repeating units and…
Q: What is the formula for determining the molecular weight of a polyelectrolyte polymer? Is it…
A: Polyelectrolytes are polymers with an electrolyte group in their repeating units. Polyelectrolytes…
Q: 12. Which is NOT TRUE about thermoplastic polymers? a. they maintain their shape and strength when…
A: Option (a) is correct choice... Thermoplastic polymers become soft on heating and reshaped...
Q: Define the terms monomer, plastic, thermoplastic, thermosettingplastic, elastomer, copolymers, and…
A: Polymer chemistry is the branch of chemistry which involves the study of synthesis, bonding,…
Q: The ingredients in the lamina may be or Materials. The laminate composites known as their properties…
A: Laminates are composite layers of different materials bonded together with adhesive . Laminates have…
Q: The fibres in a fibre composite material control: a.)The physical properties of the composite…
A: Fibre in fibre composite material control the various physical and mechanical properties like…
Q: what is the diffrence between fibres and elastomers?
A:
Q: How are the physical properties of a polymer controlled in the vulcanization process?
A: Vulcanization or vulcanisation is a chemical process for converting natural rubber or related…
Q: One of the following statements about fiber reinforced polymers is more accurate than the others.…
A: Fibre reinforced polymer is a composite, in which the polymer matrix is reinforced by fibre. Keeping…
Q: Higher coefficient of thermal expansion: High purity fused silica _ Pyrex glass (borosilicate)
A: Coefficient of Thermal Expansion of high purity fused silica = 0.64×10-⁶/℃
Q: Name the polymers used in laminated sheets and give the name of monomeric units involved in its…
A: The simpler units which combine to form polymers are known as monomers. The process by which…
Q: Estimate the number of atoms that would have to be removed from a silicon substrate to produce a…
A: Mass per unit volume is known as density of the substance.
Q: Discuss carbon-carbon reinforced composite and hybrid reinforced composites.
A:
Q: Rubbers, or elastomers, stretch readily to elongate by a factor of before breaking. 50 20 D 100 10
A: Rubbers, or elastomers, stretch readily to elongate by a factor of .....
Q: name of an aplication in which polymer composite can not be use? and reason why we should not use…
A: Polymer composite is the polymers made up of a combination of organic polymers and their arrangement…
Q: Classify the following as either addition or condensation polymer. (i) Natural rubber (ii) Teflon…
A: An addition polymer is a polymer that forms by simple linking of monomers without the co-generation…
Q: Explain why an elastomer under tensile load contracts on heating. Compare this with the behaviour of…
A: Elastomers are unique polymers that have good elastic properties. In other words, an elastomer is…
Q: Why does a transparent polymer turn opague in the necked region when tested in tension.
A: Answer - Transparent polymers are usually opaque because of light scattering on the numerous…
Q: How does a polypropylene face mask become polymeric carbon dots?
A: Answer - polypropylene face mask - These Disposable Face Masks are manufactured from polypropylene…
Q: Why is graphite a good lubricant? What advantages does it have over grease or oiled based…
A:
Q: Determine which one would have higher crystallinity, and also briefly explain why. (a) Block…
A: Polymers are macromolecules that are formed by the reaction of smaller molecules like monomers. A…
Q: Is Nyloon 6,6 Synthesis a condensation polymerazation?
A:
Q: Chemistry If an FCC material terminated at a surface, which plane would give you the lowest surface…
A:
Q: What kind of process can a polypropylene face mask turn into polymeric carbon dots?
A: The waste masks are first sulfonated in an autoclave, then used as carbon source and turned into a…
Q: What is the chemical reaction for the combustion of PVC? What are the byproducts of the reaction?
A:
Q: (a) As CdSe particles decrease in size below 10 nm, would band gap increase or decrease? Would the…
A:
Q: how does oxobiodegradanle bioplastics, hydrobipdegradble bioplastics and traditional petroleum based…
A: Green chemistry deals with the configuration of the chemical process that involves the use of…
Q: Calculate the approximate length of PVA strand assuming that each monomer unit contributes two…
A:
Q: Polycarbonate is sometimes used for protective helmets, such as motorcycle helmets. However, it is…
A: Polycarbonates are high-performance tough, transparent, amorphous thermoplastic polymer that…
What is the most important property of elastomers?
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- Polycarbonate is sometimes used for protective helmets, such as motorcycle helmets. However, it is often not advisable to apply adhesive stickers to the helmet surface or to clean the surface with a solvent, as both can potentially degrade the helmet strength. Why might this be?2. Why does a transparent polymer turn opaque in the necked region when tested in tension.What can be used to remove the passivation layer from silicon? O Strong base Strong acid O Water О Нeat
- Sketch and label the expected stress-strain curves at room temperature for lightly cross-linked poly(butadiene) and reinforced poly(methyl methacrylate). Compare the behaviour of each specimen in terms of modulus and toughness.What is the primary structural feature necessary for a molecule to make it useful in a condensation polymerization reaction?1. What are the principal natural processes that affect the petrophysical properties of sedimentary rocks? 2. As shown in Table 1.1, the total bulk chemical analysis of rock samples is clearly different from the surface analysis. What effect does this have on the rock properties?