From the Stratek Reading Room...
"The Materials Analyst, Part 98: A Tour of the World of Nylon-Part 1"
An Article by Michael Sepe, published in Injection Molding Magazine - July 2008
Stratek has done considerable experimentation and material processing involving Polyamides (Nylon). Therefore this article caught our eye when we found it in the July Issue of Injection Molding Magazine. We think it addresses both the basics and some more advanced information concerning the differences in the chemistry and structure of these two important materials.
Ever wonder how to explain the hydroscopic nature of PA materials? Micheal Sepe explains, “There is another important consequence of the presence of the amide group. Because the amide group and water both contain the potential for hydrogen bonding, amide groups that do not bond to each other will potentially attract water molecules. This accounts for the very hygroscopic character of polyamides, a complicating property that all processors and users of nylon materials must cope with.” With so many similarities between Nylon 6 and 6/6 at a molecular level, evaluating bonds and subtle structural shifts explain how small differences can have a big impact on the final product. This series of articles is designed to help processors understand how a few analytical tools can help diagnose a part failure. Michael Sepe, analyst and author, is an independent materials and processing consultant based in Sedona, AZ. He has provided analytical services to material suppliers, molders, and end users for 20-plus years. Click here to link to this very informative article. To contact Michael Sepe, you can reach him at This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
Link here for the Injection Molding Magazine website at www.Immnet.com.
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