Stories
Slash Boxes
Comments

SoylentNews is people

SoylentNews is powered by your submissions, so send in your scoop. Only 14 submissions in the queue.
posted by martyb on Thursday August 17 2017, @07:51AM   Printer-friendly
from the carbon-ated-spiders dept.

Spider silk can be made stronger by feeding the spiders that produce the silk aqueous dispersions containing graphene or carbon nanotubes:

[Researchers] in Italy and the UK have found a way to make [spider] silk a lot stronger, using various different spider species and carbon nanotubes or graphene. The research team, led by Professor Nicola Pugno at the University of Trento, Italy, succeeded in having their spiders produce silk with up to three times the strength and ten times the toughness of the regular material.

[...] "We already know that there are biominerals present in in the protein matrices and hard tissues of insects, which gives them high strength and hardness in their jaws, mandibles and teeth, for example. So our study looked at whether spider silk's properties could be 'enhanced' by artificially incorporating various different nanomaterials into the silk's biological protein structures."

To do this, the team exposed three different spider species to water dispersions containing carbon nanotubes or graphene. After collecting the spiders' silk, the team tested its tensile strength and toughness. Professor Pugno said: "We found that the strongest silk the spiders spun had a fracture strength up to 5.4 gigapascals (GPa), and a toughness modulus up to 1,570 joules per gram (J/g). Normal spider silk, by comparison, has a fracture strength of around 1.5 GPa and a toughness modulus of around 150 J/g.

Spider silk reinforced by graphene or carbon nanotubes (DOI: 10.1088/2053-1583/aa7cd3) (DX)

Related: The Strongest Natural Material: Sea Snail Teeth
Synthetic Spider Silk Fiber Created


Original Submission

 
This discussion has been archived. No new comments can be posted.
Display Options Threshold/Breakthrough Mark All as Read Mark All as Unread
The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
  • (Score: 2) by takyon on Thursday August 17 2017, @10:31AM (2 children)

    by takyon (881) <takyonNO@SPAMsoylentnews.org> on Thursday August 17 2017, @10:31AM (#555219) Journal

    LETTER
    Spider silk reinforced by graphene or carbon nanotubes
    Emiliano Lepore1, Federico Bosia2, Francesco Bonaccorso3,4, Matteo Bruna3, Simone Taioli5,6, Giovanni Garberoglio5, Andrea C Ferrari3 and Nicola Maria Pugno1,7,8
    Published 14 August 2017 • © 2017 IOP Publishing Ltd
    2D Materials, Volume 4, Number 3

    --
    [SIG] 10/28/2017: Soylent Upgrade v14 [soylentnews.org]
    Starting Score:    1  point
    Karma-Bonus Modifier   +1  

    Total Score:   2  
  • (Score: 2) by Fnord666 on Thursday August 17 2017, @12:00PM (1 child)

    by Fnord666 (652) on Thursday August 17 2017, @12:00PM (#555240) Homepage
    Original paper [arxiv.org] referenced in the 2015 article. The new paper [iop.org] from 2017. Discuss.