Hi Steemit, I want to start doing a series of topics in the area of materials science, I will start in this Post with the polymers, I hope you like it.
Polymers
The first thing to know is that the term polymer is derived from the Greek words poly and mere, which mean many parts. In this sense, the polymers are chemical species with high molar masses, formed by the sequential or random union of molecules of smaller mass called monomers, by means of covalent bonds. In our bodies, as in all life forms, these macromolecules are present in the form of carbohydrates, proteins, nucleic acids, etc., polymeric materials such as wood, natural resins, gums and fibers such as cotton, wool, silk and so on, have been used to satisfy human needs since ancient times.
Polymers
Classification of polymers
There are several methods for classifying polymers. According to their response to the heat treatment applied to them, they are divided into thermoplastics and thermosets. Thermoplastics are polymers that melt when heated and resolidify when cooled, while thermosets are those that do not melt when heated, but at sufficiently high temperatures, they decompose irreversibly. Other classes of polymers are also the elastomers and the fibers
Thermoplastics and thermosets
Another classification system is based on the nature of the chemical reactions employed in the polymerization and may be condensation polymers prepared from monomers where the reaction is accompanied by the loss of a small molecule, usually water, or addition polymers formed by the addition reaction of an unsaturated monomer.
Physico-chemical characteristics
The physico-chemical characteristics of these polymers are determined by the design achieved by the polymerization reactions, where the polymer chains formed from a single type of monomer are called homopolymers, whereas those formed from more than one unit are defined as copolymers. Depending on the shape of the chain, the homopolymers may be linear, branched or crosslinked. In the copolymers, the monomers can be ordered in the main chain alternately, randomly, block or functionalized.
Physico-chemical characteristics
The properties mentioned above give the polymeric materials a high resistance to the environments to which they are subjected. So they can have multiple applications, facilitated our lives and being one of the engines of the development of materials science. However, the high resistance of these materials generates an environmental problem, which is currently the subject of a large amount of research, mainly with biodegradable polymers, which will expand in another Post.
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References:
Akkapeddi, K. 2.001. Rubber toughening of polyamides by reactive blending. En: Reactive Polymer Blending. Baker W., Scott C., Hu G.-H., Hanser (eds). Munich. Págs. 207-208.
Martinelli, M.; Froimowicz, P.; Calderon, M. y Strumia, M. 2003. Materiales poliméricos funcionalizados. Parte I: síntesis y polimerización de monómeros funcionalizados. Revista Iberoamericana de Polímeros, 04: 30-46.
Very well written and presented in a way that is quick to read and understand. Well done. Happy to have submitted you for curation :)
Keep it up!
It's good that you liked the post, friend. Thanks for the comment, I appreciate your support. I follow you :)
Looking forward to more! You may consider putting the physico-cheimcal section first so you can explain why these properties are good for a particular application :)
Sure friend. I will take your opinion into account. Thanks for your comment
Nice to see good educational material getting rewarded. Nice use of graphics.
Thanks for commenting, my friend! It's good that you liked it! I follow you.
I used to work in nanoscience...this sort of brings me back!
Good to know this, nanoscience is wonderful. In the part of the materials I feel identified with the area of biomedicine.
I now work in the area of rural medicine. I do not do this type of research, but I definitely understand the importance of it.
Resteemed.
Thanks!
Congratulations @bape682, this post is the forth most rewarded post (based on pending payouts) in the last 12 hours written by a User account holder (accounts that hold between 0.1 and 1.0 Mega Vests). The total number of posts by User account holders during this period was 1224 and the total pending payments to posts in this category was $2313.50. To see the full list of highest paid posts across all accounts categories, click here.
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@optimisticguy just up/voted your post. I like your writing style. If you want me to up/vote all your postings simply follow me @optimisticguy.
im currently studying mechanical engineering. I HATE polymers!!
why?
I will make a small search but if this is profit driven, then eventually it will reveal itself as a deception, just like many things today..
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