Guest Post by Dr. Robert (Bob) Humphreys A polymer or plastic must be biodegradable to be compostable. The reverse is not necessarily true, that is, a polymer might be biodegradable without being compostable. While this may seem inconsistent, biodegradation can occur under a variety of conditions and over a long time frame (up to years or even decades), possibly assisted by ... [Click to Continue...]

Guest Post by Dr. Robert (Bob) Humphreys One option for disposal of plastic packaging is composting, either in “backyard” or industrial-scale facilities. However, as we have stated in previous posts in this series, there are many problems that must be solved to make composting a viable option for even a small percentage of plastic packaging. There is enough confusion about ... [Click to Continue...]

Guest Post by Dr. Robert (Bob) Humphreys A material that is “biodegradable” will degrade partially or completely in the environment under the action of biological organisms to produce benign products such as carbon dioxide, water, simple inorganic salts, and, possibly, residual biomass. Depending on the chemical structure of the material, the biodegradation process can be ... [Click to Continue...]

  Image from www.wishescollection.com Happy New Year and Best Wishes for a prosperous 2017. We will be back with more technical content on Monday, January 9.  We will continue with our series on Composites and Dr. Bob Humphreys will have a series on biopolymers that covers the various end of life scenarios such as recycle, compost, landfill, and incineration.  ... [Click to Continue...]

Time to pull out the annual picture of the “chemistree” for the Happy Holidays post. I would like to extend a heartfelt “thank you” to all of my dedicated readers.  I track the visitors and we have between 1200 to1500 visitors per week come to enjoy our content. I work hard to make sure we have highly technical content presented in concise and focused posts.  Now it’s ... [Click to Continue...]