Questions tagged [polymers]
For questions about synthetic or natural polymers, their chemical or physical properties, and their synthesis, etc.
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At the atomic or molecular level, why are some macroscopic materials more flexible, compared to others?
Before answering this question, keep in mind that I am a 2 year Biology student, with limited experience in studying chemistry. I am going to make assumptions which I explain, feel free to correct ...
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How does the branched structure of glycogen, increase its ability to be hydrolysed?
"Glycogen branching is essential because it allows for increased water solubility and several sites to break it down; this allows for easy and quick glycogen utilization when it is broken down&...
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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,...
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Why are certain hot polycarbonate films stickier than others? Molecular weight? Hydrolysis?
In van der waals dry transfer, we pick up flakes of materials such as graphene using polymer films. The material is exfoliated onto an SiO2 covered wafer and picked off using the polymer film. It's ...
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Do NaHCO3 and cyanoacrylate react? [closed]
I just saw this video about using baking soda + cyanoacrylate(CA) glue as a substrate+resin.
Neat, but do CA and $\ce{NaHCO3}$ react in any way?
If so, what does the equation look like and what is ...
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How to estimate the mobility constant and the surface energy parameter in the Cahn-Hilliard equation?
As a mathematician, I want to simulate phase separations with the Cahn-Hilliard equation
$$
\frac{\partial c}{\partial t} = M \Delta \bigg(\frac{\partial \mu}{\partial c} - \kappa \Delta c \bigg),
$$
...
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Detecting epoxy in a polyester powder coat paint
I have 2 steel parts which were both powder coated in a polyester powder coat, however one of them does not perform exactly as I would expect it in my unusual use case which depends on temperature. I ...
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What is the number of Gaussian chains of network per unit volume of rubber?
In this chapter, page 70, I encountered the term `Gaussian chains of network'. In equation 3.34 (page 73) of this chapter, the phrase 'n is the number of moles of Gaussian chains' occurs in the ...
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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 ...
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Is there really no solvent (or any other really) glue for polyethylene terephthalate?
PVC can be glued well with solvent cement wherein it melts somewhat and then sticks together really well as if it was welded, which is really convenient. But I can't find anything similar online for ...
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1,1-Diphenylethylene subproduct/impurity
I'm working with 1,1-diphenylethylene and I've observed that, if left at room temperature in the air atmosphere, a white insoluble powder forms. I'm unable so dissolve this powder in every solvent ...
user78790
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Does acrylic resin in acetone react with the same acrylic resin in ethyl acetate?
I am not at all familiar with organic chemistry. I am working in museum conservation where an acrylic resin (such as Paraloid B-72) is mixed acetone and sometimes ethyl acetate to produce a resin for ...
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Polymer purification by reprecipitation troubleshooting
I am synthesizing new polymer that has not been reported before. The structure of the polymer is based on indacenodithienothiophene unit and thiophene. I used Stille polymerization. As monomers, I ...
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Is polycarbonate resistant to extremely cold temperatures?
I am working on a project which involves the use of polycarbonate. Polycarbonate is quite a new material to me as I haven't worked with it yet. I want to know its characteristics in detail, as it ...
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creating hydrogenated castor oil/sebacic acid copolymer [closed]
I would like to create a copolymer using Hydrogenated castor oil and Sebacic acid to create a hair conditioning treatment, however I dont know where to begin so any advice will be highly appreciated.
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