All Questions
16
questions
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33
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Synthesis of polypropylene
So, I have two questions regarding the synthesis of polypropylene:
I have tried looking everywhere but couldn't find a detailed mechanism for the termination step of the synthesis of polypropylene (...
- 31
1
vote
0
answers
55
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Cause and Prevention of Palladium Mirror in Stille Coupling
I am conducting some monomer and polymer syntheses using Stille coupling or other palladium-based coupling. I usually use the combination of $\ce{Pd_2(dba)_3}$ and $\ce{P(o-tol)_3}$ in Stille coupling,...
- 1,101
2
votes
0
answers
60
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How to add any polymer to azobenzene?
I want to make a polymer by adding two polymeric substituent groups to azobenzene (I would like only N-azobenzene-N where N is a polymer and repeats). I have been reading about how they make the ...
1
vote
0
answers
111
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Recovery of precipitated polymer
I have recently newly synthesized the polymer. Based on its structure I tried to precipitate its concentrated solution in dichloromethane by dropping it into methanol. It seemed to work. The methanol ...
- 1,101
3
votes
1
answer
350
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Are there any organic compounds with three or more oxygen atoms bonded together in a straight chain?
Recently, there was a question which enquired about some oxygen rich compounds that burn themselves completely and thus not requiring any external atmospheric oxygen. The author came up with the ...
- 26.3k
2
votes
1
answer
555
views
Making bioplastic at high school level chemistry using PLA/Starch blends
I'm currently working on a high school chemistry essay about biodegradable plastics. I know that there is an easy way to synthesize Thermoplastic Starch (TPS), a starch-based bioplastic using glycerol ...
- 39
1
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0
answers
71
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How to get rid needle clogging on electrospinning of PLA/PCL/PMMA/Collagen?
For my thesis research, I dissolved PLA and PCL in chloroform: methanol (3:1), PMMA (350.000 MW, 13 wt%) in acetone, and collagen in acetate acid--and then, I mixed them together. The problem is when ...
1
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0
answers
249
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How to dissolve PLA/PCL/PMMA?
I have a research about electrospun membrane synthesis where I dissolve PLA pellets in chloroform:methanol (3:1) for 3 hours and also PCL pellets in chloroform:methanol (3:1) for 3 hours too. Another ...
1
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0
answers
54
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Polymer synthesis with redox initiation
I made four different samples of poly acrylic nitrile (PAN) by going through a precipitation polymerization. The system was initiiated by the redox system $\ce{K2S2O8}$, $\ce{FeSO4}$ and $\ce{Na2S2O5}$...
- 11
1
vote
1
answer
78
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Creating an efficient synthetic route to this elastomeric block copolymer
This was a question my professor gave me in which I have a couple of ideas to create a synthetic route which include: Either an anionic or cationic polymerization? If so, I don't think it would be ...
- 543
3
votes
1
answer
344
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"Synthetic wood" from cellulose and lignin?
Is there any research into making wood from its constituents?
From what I know, wood is composed of cellulose, hemicellulose, and lignin. We can extract these from raw wood, but is there any way we ...
- 281
4
votes
1
answer
269
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What is the appropriate sizing for fiberglass compatible with polyamide?
I am looking for a chemical coating for glass A fibers, compatible with polyamide. The fibers are uncoated, 100-filament strands of 22-micrometer "A" glass fibers.
We are producing fiberglass in our ...
- 141
4
votes
0
answers
76
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Where can I obtain research material on the synthesis of polypyrrole? [closed]
I'm studying Chemistry at A-level and a large part of the course is a researcher paper that takes most of the year.
Conductive polymers interest me. I'm struggling to find any surfeited researcher on ...
- 49
4
votes
1
answer
79
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Are there softeners in synthetic materials?
Are there softeners used in polyester or polypropylene to make these materials more flexible? Or is this not needed for this kind of synthesis?
- 441
3
votes
1
answer
151
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Possible Synthesis of a Polymer
Following a question I have asked previously, what I intend to inquire this time is quite similar as well, except, with a polymer.
So previously I asked whether such monomer PCDO is possible to ...
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