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Thread: Clear cuts

  1. #1
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    Default Clear cuts

    Scientists develop transparent wood that is stronger and lighter than glass


    A researcher holds up a square of transparent wood material against a green leaf. (USDA Forest Service)

    Researchers at the University of Maryland have turned ordinary sheets of wood into transparent material that is nearly as clear as glass, but stronger and with better insulating properties. It could become an energy efficient building material in the future.

    Wood is made of two basic ingredients: cellulose, which are tiny fibres, and lignin, which bonds those fibres together to give it strength.

    Tear a paper towel in half and look closely along the edge. You will see the little cellulose fibres sticking up. Lignin is a glue-like material that bonds the fibres together, a little like the plastic resin in fibreglass or carbon fibre. The lignin also contains molecules called chromophores, which give the wood its brown colour and prevent light from passing through.

    Early attempts to make transparent wood involved removing the lignin, but this involved hazardous chemicals, high temperatures and a lot of time, making the product expensive and somewhat brittle. The new technique is so cheap and easy it could literally be done in a backyard.

    Starting with planks of wood a metre long and one millimetre thick, the scientists simply brushed on a solution of hydrogen peroxide using an ordinary paint brush. When left in the sun, or under a UV lamp for an hour or so, the peroxide bleached out the brown chromophores but left the lignin intact, so the wood turned white.

    Researchers demonstrated after brushing a coat of hydrogen peroxide on the opaque wood material, and exposing it to one hour of sunlight, it turns transparent. (Qinqin Xia, University of Maryland/Science Advances)

    Next, they infused the wood with a tough transparent epoxy designed for marine use, which filled in the spaces and pores in the wood and then hardened. This made the white wood transparent.

    You can see a similar effect by taking that same piece of paper towel, dip half of it in water and place it on a patterned surface. The white paper towel will become translucent with light passing through the water and cellulose fibres without being scattered by refraction.

    The epoxy in the wood does an even better job, allowing 90 per cent of visible light to pass through. The result is a long piece of what looks like glass, with the strength and flexibility of wood.

    As window material, it would be much more resistant to accidental breakage. The clear wood is lighter than glass, with better insulating properties, which is important because windows are a major source of heat loss in buildings. It also might take less energy to manufacture clear wood because there are no high temperatures involved.

    Transparent wood could become an alternative to glass in energy efficient buildings, or perhaps coverings for solar panels in harsh environments. There could be no end of uses.

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    Many different types of wood, from balsa to oak, can be made transparent, and it doesn't matter if it is cut along the grain or against it. If the transparent wood is made a little thicker, it would be strong enough to become part of the structure of a building, so there could be entire transparent wooden walls.

    While this technology has yet to be scaled up to industrial levels, the researchers say it has great potential as a new building material. In fact, they say that theoretically, an entire house could be made transparent. It is not clear why anyone would want to live in a transparent house, but for people who do, it would be OK to throw stones…


    https://www.cbc.ca/radio/quirks/scie...lass-1.5902739

  2. #2
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    I like my wood saturated in white liquor and cooked about 300 degrees

  3. #3
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    Now we know what wonder woman's invisible plane was made of.

  4. #4
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    didn't see that coming

  5. #5
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    Quote Originally Posted by Glenn View Post
    Now we know what wonder woman's invisible plane was made of.
    And now we only wish she'd worn a bustier of the same material.

  6. #6
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    TheRez
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    I was sayiing at work here yesterday that they should make windows out of wood. Dam thought police are every where .
    We gave you Corn,you gave us clap,bad trade.

  7. #7
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    Quote Originally Posted by cleancutredneck View Post
    didn't see that coming
    :golfclap:
    Last edited by joeydpga; 02-10-2021 at 01:36 PM.
    http://tektongamecalls.com

    Tekton Game Calls

    843-290-9569

  8. #8
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    Nov 2004
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    Concur.

  9. #9
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    Oct 2019
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    I'm all for clearcuts to produce this new fangled crap. Especially all weather clearcuts.

  10. #10
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    Jul 2009
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    Clarendon County
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    And landowners will continue to get nothing for their wood in sacker liner.

  11. #11
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    Nov 2001
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    Columbia, SC
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    so you're saying being a timber maven isn't all its cracked up to be? Do i need to cancel my helicopter order?
    Ugh. Stupid people piss me off.

  12. #12
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    Aug 2013
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    I can now account for all of my misses over the years.

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