Reflection

Our team have done a great job in the teamwork. Everyone pay time trying best to do a better job.
During the whole journey, we use the original data and data of this group, which makes the search process much easier. With the outbreak of Covid-19 in the world, masks have become a must for all people in the world, so we choose masks as samples of polypropylene.
We learned that in the process of making masks from polypropylene, the main application is the physical properties (dense accumulation and small pores) of polypropylene fiber, which can block the spread of virus to a certain extent while passing through oxygen. In the multi-layer accumulation, air can easily pass through the pores of polypropylene, while dust and virus will be blocked by polypropylene fiber to a certain extent, and some of them will be absorbed by graphite layer.
Our progress is very smooth, from the assignment to the completion of the task, every member of the team has played an important role. Liam, in particular, played a very important role in our group work, helping the two groups to complete many tasks respectively. There are two areas for improvement. One is that we need to make plans earlier in order to make more precise and timely adjustments. The second is that we need to hold more offline meetings to discuss the integrity and reliability of the content.