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Miscellaneous > Stone Paper: Sustainable paper?

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message 1: by [deleted user] (last edited Mar 16, 2018 08:10AM) (new)

Hello everyone!

While I was starting a book (The Blue Economy by Gunter Pauli) I read that a company in Taiwan (Taiwan Lung Meng Tech Co.) was producing stone paper.

I have not done much research about it, so this is subjected to update.

Apparently, the production of this stone paper is much better than paper from cellulose in terms of sustainability. It is claimed that the process does not require water and bleach.
Another good point is the raw material comes from waste and the finite product is recyclable.

Just wanted to share this since it is related to books and is (potentially, I have not checked it yet) a good example of sustainibility and eco-friendly thing. If it is maybe people should be aware of that possibility :)


Composition: it is claimed to be mainly composed of CaCO3 (calcium carbonate) which is an abundant "salt". This compound is classified as an inorganic chemical since it does not fullfil the requirement of an organic substance (An organic chemical has to contain at least both carbon and hydrogen). However, some sources tell that high density polyethylene (HDPE) also composes the stone paper. Note that ethylene (the molecule used to produce the corresponding polymer) is obtained from finite resources such as petroleum, it can be manufactured from bioethanol as well but the process is polluting and not green.
It is also said that resin are added instead of HDPE but no idea of what it is.

Why additives: Well, I am guessing that polymers are added for flexibility otherwise you would have a stone tablet :)

Water degradability (for deionized water, which means almost no ions): Stone paper is supposed to be insoluble and waterproof. This is true since Calcium Carbonate is poorly soluble in water (0.013 g/L at 25 °C). To have an idea you can compare this to "cooking salt" NaCl (Sodium chloride) which has a solubility in water of 360 g/L at 25 °C.
=>So it is almost not soluble in water at 25 °C if you assumed that it is only composed of CaCO3 which is probably wrong ;)

Biodegrability: CaCO3 is plausibly not biodegrable since not organism (to the best of my knowledge) consume it. This need to be checked.

Recyclable: I have no idea now, no real evidence.

http://www.taiwanlm.com/page004_eng.p... :
https://pubchem.ncbi.nlm.nih.gov/comp... : for the data about solubilities
http://www.paraxpaper.co.uk/ : some information about the characteristic of stone paper.

Be critical when you read those papers/websites, so many information are hindered or simply use to manipulate you ;)

message 2: by Pam (new)

Pam | 1091 comments Mod
I've read something similar: fungas growing building materials out of construction waste. Supposed to be as strong and far far cheaper.



message 3: by Lauren (new)

Lauren (lala_poopsiebooks) | 7 comments This is totally fascinating. I once had a notebook with "stone paper," so maybe it's possible.

message 4: by [deleted user] (new)

Florian wrote: "Hello everyone!

While I was starting a book (The Blue Economy by Gunter Pauli) I read that a company in Taiwan (Taiwan Lung Meng Tech Co.) was producing stone paper.

I have not done much research..."

I didn't know this paper existed. Thanks for sharing @Florian : )

It's another step forward for the environment.

message 5: by Ashley (new)

Ashley | 82 comments I’ve not heard of this! I went to school for sustainability and am always looking for new things to learn and research about!

message 6: by [deleted user] (new)

So this week I have tried to look for publications or patents about stone. I used scifinder (a scientific website that helps to find work about a specific topic etc...), unfortunately, the few references I have found for now are in chinese and I cannot really access it. I'll continue my research while I have some time out in my work which is kind of rare ^^
I will let you know as soon as I get more information and I'll update the first post :)

@Keith: I have seen this links and other website but there is no real evidence of what they claim :) I'll probably buy some stone paper and I will perform some analysis and degradation study since I am really curious about it!

message 7: by Mahmoud (new)

Mahmoud Amr Florian wrote: "Hello everyone!

While I was starting a book (The Blue Economy by Gunter Pauli) I read that a company in Taiwan (Taiwan Lung Meng Tech Co.) was producing stone paper.

I have not done much research..."

Ancient Egyptians used Papyrus, they were happy now we all use the cellulose and it may be just about time for waterproof stone paper..
Very interesting topic. Keep us updated florian..

message 8: by ayeshaxbooks (new)

ayeshaxbooks | 3 comments Love the idea of stone paper!

message 9: by [deleted user] (new)

With the information I have right now it is difficult to say if the stone paper is better than cellulose paper.
However, if there is HDPE in it I can tell that stone paper is not sustainable or biorenewable. Further information are needed though ;)

message 10: by [deleted user] (new)

@Keith: Critical thinking is good :) but sometime things can be really good and true but I understand your point, I am also a bit sceptic or let's say cautious that is why when an article claims things just like "scientists did study" I am like "Ok, show me the study, the research, the tools used etc..."
@Everyone (:p): It makes me think about a recent article in BBC which is focused on plastic particle in bottle. They provided a study made by scientist and when you know a bit about polymers (plastics are polymers) you realize that the analysis used by the scientists are not relevant enough. With the data they provide I can only conclude "Particules were found in the samples, but we cannot neither know about the nature of the particules nor if they are harmful". I have to admit I was really upset to see how the article from BBC was manipulating the crowd :'( (I am working kind of against petroleum-based plastics but I cannot side with that when the truth is altered or manipulated).

Here is the link of the article of BBC (you also have a link for the study): http://www.bbc.com/news/science-envir...
It is not related with the main topic of this thread but it is probably interested.

message 11: by [deleted user] (new)

After several weeks I was not able to solubilize the stone/rock paper I bought, this makes its characterization quite difficult since most of the analytic device I have access does not use solid state. I'll try a last thing though.

That is all for the update.

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