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What happens with the home-made Biopastics with time?

by Alex

 

Hi,

I’m wondering what happens with the home-made Biopastics with time (using the recipes presented in your book)?
If I use a home made starch or Algae bioplastic for a product, as a tangible example say the desk lamp published on this site, more or less how long will it stay intact? 1 week, 1 month, 1 year, 10 years before it breaks? With time will it fall apart or change shape? Change colour? Could I actually make something that will last?

Comments (1)

  1. Green Plastics says:

    This is a good question. The answer depends a lot on what it is being used for and how it is stored. Remember “biodegradable” means that it will degrade with the action of microbes. So if you keep it in an environment favorable to microbes–warm, wet, and especially outdoors–it will deteriorate much faster than if you keep it in a dry cool environment.

    It will also deteriorate faster if you handle it a lot, because moisture in your hands will begin to degrade it.

    If you just keep a biodegradable lamp on your desk in an air-conditioned room, it could last more than a year without much noticeable change. On the other hand, if you keep a bioplastic card-sleeve in your wallet that you handle all the time and that is warmed by your body temperature, it could deteriorate in weeks. If you leave something outside in hot humid weather, it could deteriorate in days.

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