Can Plastic Be Made Without Oil?

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Discussion Overview

The discussion revolves around the feasibility of producing plastics without using oil or organic matter, exploring alternative sources such as atmospheric carbon dioxide, seawater, and other elements. Participants examine the economic, technical, and scientific challenges associated with this idea.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions whether plastics can be made from atmospheric CO2 and other elements, asking about the economic, technical, and scientific viability of such processes.
  • Another participant argues that carbon in CO2 is stable and requires significant energy to be transformed into usable forms for polymerization, making the proposed method economically unfeasible.
  • Some participants note that while plants can produce polymers from similar compounds, these may not fit the conventional definition of plastics, raising questions about economic viability.
  • A later reply suggests that while fusion power could potentially reduce oil dependency, it is not currently feasible, and highlights the limited use of oil in the chemical industry compared to its role in energy generation.
  • Concerns are raised about the challenges of air transportation and the lack of viable high-capacity energy storage alternatives to hydrocarbons, suggesting that while life without oil may be possible, certain sectors may still rely on it.

Areas of Agreement / Disagreement

Participants express differing views on the feasibility of producing plastics without oil, with some arguing it is technically and economically challenging, while others suggest that alternative polymer sources exist but may not be economically viable. The discussion remains unresolved regarding the practicality of these ideas.

Contextual Notes

Participants acknowledge the complexity of polymerization processes and the stability of carbon compounds, which may limit the feasibility of alternative plastic production methods. There are also discussions about the economic implications and the current reliance on oil in various industries.

Stephanus
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Can plastic be made NOT FROM oil?
And not from remains of living organic matter.
I mean, we extract carbon from atmosphere CO2 or from the rock...
Oxygen from atmosphere or sea water...
Hydrogen from sea water...
Nitrogen from atmosphere or other sources...
Combine them together and voila, we get plastic.
Is the process economically inefficient?
Is the process technically difficult?
Is the process scientifically impossible?

Thanks.
 
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Plastics are polymers of hydrocarbons. There are many things to consider about why it is very difficult (sometimes currently impossible) and very economically inefficient to make plastics from the starting materials you mentioned.

Carbon, in the form of CO2, is incredibly stable. It takes a significant amount of energy to functionalize the CO double bonds since they are so stable.

Polymers, of any kind, need a way to be polymerized. This means they need some sort of functionality on them that can be reacted with. Polyvinylchloride (PVC) for instance is made from vinyl chloride which has the electron poor double bonds which link together in the polymerization reaction.

Now couple these two things together. It is not economically feasible to make plastics in this way.
 
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Kekule said:
Plastics are polymers of hydrocarbons. There are many things to consider about why it is very difficult (sometimes currently impossible) and very economically inefficient to make plastics from the starting materials you mentioned.

Carbon, in the form of CO2, is incredibly stable. It takes a significant amount of energy to functionalize the CO double bonds since they are so stable.

Polymers, of any kind, need a way to be polymerized. This means they need some sort of functionality on them that can be reacted with. Polyvinylchloride (PVC) for instance is made from vinyl chloride which has the electron poor double bonds which link together in the polymerization reaction.

Now couple these two things together. It is not economically feasible to make plastics in this way.

Thanks for your answer.
It's just an idea. If fusion power is in operational and if we can gain limitless clean energy...
We'll be free completely from oil dependency
 
Stephanus said:
Can plastic be made NOT FROM oil?

Think this way: plants are capable of producing polymers using the compounds you have mentioned. Cellulose, caoutchouc, DNA, proteins - these are all polymers. While they don't necessarily fit the notion of 'plastic' in a common understanding of the word, they share many general chemical properties. So from the purely chemical point of view answer to your question is "yes".

Whether it is economically viable is a completely different question.
 
Borek said:
Think this way: plants are capable of producing polymers using the compounds you have mentioned. Cellulose, caoutchouc, DNA, proteins - these are all polymers. While they don't necessarily fit the notion of 'plastic' in a common understanding of the word, they share many general chemical properties. So from the purely chemical point of view answer to your question is "yes".

Whether it is economically viable is a completely different question.
That's why Sun have helped us making plastic hundreds of millions of years ago?
It's just that someone in the other thread says that we can't be independent from oil, even though we are able to build fusion power plants. But that's out off scope :smile:
 
Stephanus said:
That's why Sun have helped us making plastic hundreds of millions of years ago?
It's just that someone in the other thread says that we can't be independent from oil, even though we are able to build fusion power plants. But that's out off scope :smile:
About the fusion power, it's not yet feasible.
Oil is a great start-up for the chemical industry. And while most of it is used for power generation only about 3% goes to chemical plants, and a fraction of that to plastics. That could in theory and a very expensive practice be replaced by other hydrocarbon sources, for example vegetable oil (which requires a lot of chemical processing).
But the main issue IMO is the air transportation, were fueling airplanes takes around 6% (not exact just google) of the world supply.
On land you could build electric solutions, yet in air we have no other high capacity energy storage method to date to rival with hydrocarbons. So we will survive life without oil, but we will not fly that much.
 

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