Re: Super Wood Developed that’s as Strong as Titanium
02/19/2018 12:03 PM
This development certainly has great structural, and renewability, potential, but:
- What does it take to cut it to smaller sizes, ''in the field'' ?...
- Is its point-of-combustion higher, or lower, than those of common steel grades?...
- When it does burn, what toxic chemicals are released?...
- Will it stand up to termite-types of infestations?...
- How does it stand up to freeze-thaw and wet-dry types of cycles?...
- What are the projected cost estimates of bringing it to full factory production levels, in comparison to those of steel, so far?...
- What waste products result from production?...
- is it electrically neutral?...
- is it chemically compatible in long-term contact with the typical metals of other construction materials (i.e.: brackets, fixtures, screws, etc.)?...
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"... Their simple, two-step process starts with boiling wood in a solution of sodium hydroxide (NaOH) and sodium sulfite (Na2SO3), a chemical treatment similar to the first step in creating the wood pulp used to make paper. This partially removes lignin and hemicellulose (natural polymers that help stiffen a plant’s cell walls)—but it largely leaves the wood’s cellulose (another natural polymer) intact, Hu says.
The second step is almost as simple as the first: Compressing the treated wood until its cell walls collapse, then maintaining that compression as it is gently heated. The pressure and heat encourage the formation of chemical bonds between large numbers of hydrogen atoms and neighboring atoms in adjacent nanofibers of cellulose, greatly strengthening the material."
Re: Super Wood Developed that’s as Strong as Titanium
