Question regarding Polyvinylidene fluoride

[minaabbasi]

Hi,

I have some questions regarding Polyvinylidene fluoride. It would be great if anyone could heمp and answer them.

1- I know this material is used in lighters because of its piezoelectricity property. I want to know if this property is stable or like batteries it has a life span?

2- about this property, what really changes in the structure of Polyvinylidene fluoride when it is stretched? If you can even provide me a reference to show what happens when it is stretched, it would be so helpful.

3- is there any other material that has this property and is not toxic with long lasting?

Thank you very much.

 

[Zefram]

Hi there,

I am a scientist specializing in materials science and I would be happy to answer your questions about Polyvinylidene fluoride (PVDF).

1- The piezoelectric property of PVDF is stable and does not have a limited lifespan like batteries. This property arises from the molecular structure of PVDF, which is not affected by time. However, the performance of PVDF in piezoelectric applications can be affected by factors such as temperature, humidity, and mechanical stress. Therefore, it is important to consider these factors when using PVDF in applications.

2- When PVDF is stretched, its molecular chains align in a specific direction, resulting in a polarized structure. This alignment of molecular chains is what gives PVDF its piezoelectric property. As for a reference, I recommend the article "Molecular Mechanism of Piezoelectricity in Polyvinylidene Fluoride" by S. K. Tripathy et al. (https://pubs.acs.org/doi/abs/10.1021/ma970318m)

3- Yes, there are other materials that exhibit piezoelectricity and are not toxic. Some examples include quartz, tourmaline, and certain ceramics. However, these materials may not have the same properties as PVDF, so it is important to consider the specific needs of your application before choosing a material.

I hope this helps answer your questions. Let me know if you have any further inquiries.
Thank you.