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The main difference between Ordinary Polythene & Biodegradable polythene is:

* Ordinary polythene takes an around 100 + years to degrade...

* Biodegradable/Degradable polythene degrades or biodegrades in around 5 yrs depending on how it's made and how its disposed. However, biodegradation starts in the presence of sunlight, moisture, mechanical stress and/or microorganisms...

For more information on biodegradable polythene film please visit www.polybags.co.uk who offers both type of bags and will be able help you more...

http://www.polybags.co.uk/index_scroll.htm?main=cs_898.htm.

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Does polythene dissolve in water?

No, polythene does not dissolve in water as it is a non-polar polymer and water is a polar solvent. This lack of attraction between the polythene molecules and water molecules prevents it from dissolving.


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Polythene acquires a positive charge when rubbed with a cloth due to the triboelectric effect, where electrons are transferred from one material to another. In this case, the cloth tends to lose electrons to the polythene, resulting in the polythene becoming positively charged. The friction between the two materials facilitates this transfer, causing the imbalance of charge. Thus, the polythene ends up with a net positive charge while the cloth becomes negatively charged.


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Yes, perspex can become attracted to a polythene rod when rubbed together due to the transfer of electrons between the two materials, resulting in a temporary static charge.


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An ordinary magnetic compass points to magnetic north, not to true north. If the difference between the two directions is large and not accounted for, you can get lost.

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