{"id":9559,"date":"2020-10-07T14:51:22","date_gmt":"2020-10-07T12:51:22","guid":{"rendered":"https:\/\/dana.ggiants.de\/?post_type=element&p=9559"},"modified":"2024-06-18T09:50:15","modified_gmt":"2024-06-18T07:50:15","slug":"clays","status":"publish","type":"element","link":"https:\/\/materialneutral.info\/en\/element\/clays\/","title":{"rendered":"Clays"},"content":{"rendered":"

Clays and especially nanoclays are used to improve the flame retardancy of plastics. They are important components of soils and consist of layered silicates. Layered silicates are mined from natural sources and then mechanically and\/or chemically treated. After further processing steps, they are used in various products. Due to their layered structure, they can swell when water accumulates between the layers or shrink when water is removed from them. They can increase in volume by up to sixfold through water absorption<\/span> and form stable gels. The global market for nanoclays is estimated by Transparency Market Research to grow to US$ 3.2 billion by 2023.<\/p>\n

<\/p>\n

\"Kaolin
Kaolin © RHJ – stock.adobe.com<\/figcaption><\/figure>\n

How can I come into contact with this material?<\/h4>\n

Clay minerals are ubiquitous in nature, we come into contact with them every day. However, the body is used to these amounts of clay minerals and so they do not pose a risk when present in normal amounts.<\/p>\n

Since the nanoclay particles are embedded in the plastic, direct human contact with significant quantities is unlikely. For food packaging, however, it has already been shown that they can also leach out.<\/p>\n

 <\/p>\n

Is there any risk from this material to humans and the environment?<\/h4>\n

Clay minerals can have both positive and negative influences in the environment and in humans. For positive influences, the clay minerals act like a sponge that filters toxins out of the environment. Negative influences occur when the clay mineral is already loaded with a large amount of toxins when it is taken up. Then toxins are released into the respective organism (human, animal or plant) over a longer period of time, and this can damage the organism.<\/p>\n

In very large quantities, clay minerals, both in nanoform and as larger particles, can be harmful to humans and animals when inhaled; the body then cannot tolerate the large amount of dust. It has been shown for nanoclays: If these particles are inhaled in moderate quantities, then only minimal and temporary inflammation<\/span> occurs in the lungs.<\/p>\n

 <\/p>\n

Conclusion<\/h4>\n

Clays\/clay minerals, as well as nanoclays pose a low risk and only if they are present in high concentrations or loaded with toxins.<\/strong><\/p>\n

<\/h4>\n

By the way….<\/h4>\n

Nanoclays are an example of naturally occurring nanomaterials.<\/h6>\n","protected":false},"excerpt":{"rendered":"

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