{"id":806,"date":"2024-12-09T13:23:54","date_gmt":"2024-12-09T13:23:54","guid":{"rendered":"https:\/\/inventorics.com\/?p=806"},"modified":"2024-12-12T10:32:45","modified_gmt":"2024-12-12T10:32:45","slug":"cluster-3-material-research-exploring-thermoplastics","status":"publish","type":"post","link":"https:\/\/inventorics.com\/?p=806","title":{"rendered":"Cluster 3: Material Research – Exploring Thermoplastics"},"content":{"rendered":"\n
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For Cluster 3, the goal is to explore thermoplastics, a category of plastics which is suited for projects involving deformation, bending, and reshaping\u2014 could be perfect for creating a structure inspired by the principles of Peter Pearce\u2019s “Curved Space Diamond Structure\u201d.<\/p>\n\n\n\n\n\n\n\n

Understanding different Types of Plastic Types<\/strong>
Plastics can be broadly categorized into three main types due du there different arrangement of Polymers:<\/p>\n\n\n\n

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Fig1: Diagramm of the three Plastic types (Atlas Kunststoffe + Membranen, Edition Detail, page 31)<\/sup><\/em><\/figcaption><\/figure>\n\n\n\n
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  1. Elastomers:<\/strong> Flexible and stretchy, but unsuitable for reshaping under heat.<\/li>\n\n\n\n
  2. Thermosets:<\/strong> Irreversible once hardened\u2014they do not remelt and are challenging to recycle.<\/li>\n\n\n\n
  3. Thermoplastics:<\/strong> They can be repeatedly heated, reshaped, and reformed.<\/li>\n<\/ol>\n\n\n\n

    We chose thermoplastics for their recyclability and workability. Unlike thermosets, thermoplastics can be shredded and reformed multiple times, offering potential for circular design. In our case, they likely have the greatest potential to advance further.
    However, even within the field of thermoplastics, recyclability differs based on their molecular composition, which influences key properties such as melting points, densities, and mechanical characteristics.<\/p>\n\n\n\n

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    When exploring the use of plastic waste for product development, a common question arises: Why can\u2019t we simply gather all the plastic waste we find, mix it together, and repurpose it into structures?<\/em> <\/strong>Unfortunately, the chemical structure of plastics with their modules makes this approach not ideal.<\/p>\n\n\n\n

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    Fig2: Examples of miscibility of plastic types (Introduction to Plastic Recycling,, Second Edition, Vanessa Goodship Page 43)<\/sup><\/em><\/figcaption><\/figure>\n\n\n\n

    Different plastics have unique chemical structures that don’t mix well, much like oil and water. When incompatible plastics are combined, their molecules repel each other, weakening the material and reducing its mechanical strength.  <\/p>\n\n\n\n

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    Fig3: Melting Points of Thermoplastics (Introduction to Plastic Recycling,, Second Edition, Vanessa Goodship Page 46)<\/sup><\/em><\/figcaption><\/figure>\n\n\n\n

    Another reason is that Plastics melt at different temperatures. Heating a mix often leads to uneven melting: some plastics degrade, releasing harmful chemicals, while others remain solid. This inconsistency creates poor-quality products.<\/p>\n\n\n\n

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    But what Happens When Plastics Have No Labels? Sorting Thermoplastics at a Small Scale<\/strong>.
    The absence of labeling on plastics get a challenge when recycle or repurpose them. Labeling isn\u2019t universally required, making it difficult to get for everything the right type of plastic. However, there are methods for sorting plastics.<\/p>\n\n\n\n

    One effective method is float-and-sink separation<\/strong>, which leverages the density differences between plastic types:<\/p>\n\n\n\n

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    • Lighter Plastics <\/strong>float on water.<\/li>\n\n\n\n
    • Denser Plastics<\/strong> sink to the bottom.<\/li>\n<\/ul>\n\n\n\n
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