Metal-Polymer Composites: Properties and Applications in Medical Devices

Question 1

Which polymer is commonly used in metal-polymer composites for medical applications?

Accepted Answer

Polyetheretherketone

Answer

Polyethylene

Answer

Polypropylene

Answer

Nylon

Question 2

What is a key advantage of using titanium-reinforced polyetheretherketone (Ti-PEEK) in biomedical devices?

Accepted Answer

High strength-to-weight ratio

Answer

Biodegradability

Answer

High electrical conductivity

Answer

Low friction

Question 3

Which of the following is NOT a potential application of metal-polymer composites in the biomedical field?

Accepted Answer

Electrical insulation

Answer

Orthopedic implants

Answer

Drug delivery devices

Answer

Tissue engineering scaffolds

Question 4

What is the primary role of the metal component in metal-polymer composites intended for biomedical applications?

Accepted Answer

Provide strength and rigidity

Answer

Improve biocompatibility

Answer

Enhance conductivity

Answer

Facilitate drug loading

Question 5

What is NOT a strategy used to modify the surface properties of metal-polymer composites for improved biocompatibility?

Accepted Answer

Using surfactants

Answer

Coating with biocompatible materials

Answer

Adding surface functional groups

Answer

Creating nanotextures

Question 6

Which regulatory agency is responsible for approving the use of metal-polymer composites in medical devices in the United States?

Accepted Answer

Food and Drug Administration (FDA)

Answer

Centers for Disease Control and Prevention (CDC)

Answer

Environmental Protection Agency (EPA)

Answer

Occupational Safety and Health Administration (OSHA)

Question 7

What is a drawback to using metal-polymer composites in medical devices?

Accepted Answer

Increased cost

Answer

Improved biocompatibility

Answer

Enhanced mechanical strength

Answer

Versatility in design

Question 8

When designing metal-polymer composites for load-bearing applications, a critical factor to consider is:

Accepted Answer

Interfacial bonding between metal and polymer phases

Answer

Purity of starting materials

Answer

Color and aesthetic appearance

Answer

Cost of production

Question 9

For metal-polymer composites used in orthopedic implants, which property is crucial?

Accepted Answer

Fatigue resistance

Answer

Electrical insulation

Answer

High thermal conductivity

Answer

Optical clarity

Question 10

The fundamental difference between a metal-ceramic composite and a metal-polymer composite lies in the:

Accepted Answer

Chemical composition of the non-metal phase

Answer

Mechanical properties

Answer

Fabrication techniques

Answer

Biocompatibility

Question 11

The primary role of a coupling agent in metal-polymer composites is to:

Accepted Answer

Improve adhesion between metal and polymer phases

Answer

Reduce the coefficient of thermal expansion mismatch

Answer

Increase the electrical conductivity

Answer

Enhance the biodegradability

Question 12

Which of the following is a key advantage of utilizing metal-polymer composites in medical devices?

Accepted Answer

Enhanced flexibility

Accepted Answer

Reduced weight

Answer

Improved electrical conductivity

Answer

Lower production cost

Question 13

What is the fundamental mechanism that underlies the improved mechanical properties of Ti-PEEK composites compared to pure PEEK?

Accepted Answer

Efficient load transfer from the polymer matrix to the titanium reinforcement

Answer

Strong chemical bonding between the titanium and PEEK constituents

Answer

Increased crystallization within the PEEK matrix

Answer

Improved surface roughness and enhanced frictional properties

Question 14

In the context of Ti-PEEK composites intended for medical implants, which factor is of paramount importance in determining their biocompatibility?

Accepted Answer

Surface chemistry and release of ions

Answer

Mechanical durability and degradation rate

Answer

Thermal conductivity and electrical resistivity

Answer

Processability and affordability

Question 15

What is a potential drawback of utilizing metal-polymer composites in medical devices?

Accepted Answer

Increased susceptibility to corrosion

Answer

Enhanced biocompatibility

Answer

Increased mechanical strength

Answer

Reduced cost compared to pure metals

Question 16

Which of the following is a significant advantage of metal-polymer composites in biomedical applications?

Accepted Answer

Improved biocompatibility and reduced toxicity

Answer

Increased wear

Answer

Reduced strength-to-weight ratio

Answer

Limited biodegradability

Question 17

Which of the following is a common application of titanium-reinforced polyetheretherketone (PEEK) composites in the biomedical field?

Accepted Answer

Hip implants

Answer

Contact lenses

Answer

Dental crowns

Answer

Sutures

Question 18

Which of the following properties is critical for metal-polymer composites used in implants that bear mechanical loads?

Accepted Answer

High strength-to-weight ratio

Answer

Low electrical conductivity

Answer

Good optical transparency

Answer

High thermal expansion coefficient

Question 19

What is a potential disadvantage of metal-polymer composites compared to pure polymers in biomedical applications?

Accepted Answer

Increased susceptibility to corrosion

Answer

Enhanced flexibility

Answer

Reduced wear resistance

Answer

Improved biodegradability

Question 20

Which of the following techniques is commonly used to fabricate metal-polymer composites?

Accepted Answer

Powder metallurgy

Answer

Chemical vapor deposition

Answer

Electrospinning

Answer

Sol-gel processing

Question 21

What is the primary role of the polymer matrix in a metal-polymer composite?

Accepted Answer

To transfer load and provide toughness

Answer

To increase corrosion resistance

Answer

To enhance electrical conductivity

Answer

To improve thermal stability

Question 22

Which of the following factors can significantly affect the adhesion between the metal reinforcement and the polymer matrix in a metal-polymer composite?

Accepted Answer

Surface roughness of the metal

Answer

Color of the metal

Answer

Purity of the polymer

Answer

Thickness of the composite

Question 23

What is a potential application of metal-polymer composites in tissue engineering scaffolds?

Accepted Answer

Providing structural support and promoting cell adhesion

Answer

Enhancing drug delivery

Answer

Generating electrical signals

Question 24

What is the significance of optimizing the metal-polymer interface in metal-polymer composites?

Accepted Answer

To enhance mechanical properties and durability

Answer

To increase the shelf life of the composite

Answer

To reduce production costs

Answer

To improve aesthetic appearance