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Macromolecules版 - Can a single chain form entanglements?
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Re: 偶宣布哪些因素决定了纯高分子的粘度?
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话题: chain话题: single话题: form话题: chains
进入Macromolecules版参与讨论
1 (共1页)
c*******n
发帖数: 1648
1
Why?
c*****e
发帖数: 238
2
A knot, probably.
Or loops in DNA/RNA

【在 c*******n 的大作中提到】
: Why?
w********h
发帖数: 12367
3
give your definition of "single chain" first.

【在 c*******n 的大作中提到】
: Why?
w********h
发帖数: 12367
4
knot, loop are different from entanglement.
according to my diagram: if the polymer is an isolated chain in smaller
molecules,
the longer, the more like Stokes, which is basically Zimm.

【在 c*****e 的大作中提到】
: A knot, probably.
: Or loops in DNA/RNA

c*******n
发帖数: 1648
5
What if this single chain is not in solvent but in bulk state, and suppose
this chain is very very very....... long, long enough to reach a macroscopic
size to get ride of the surface effect.

【在 w********h 的大作中提到】
: give your definition of "single chain" first.
c*******n
发帖数: 1648
6
I totally agree, and I am very very veli.. interested in your first sentence.
Could you explain a little bit more?

【在 w********h 的大作中提到】
: knot, loop are different from entanglement.
: according to my diagram: if the polymer is an isolated chain in smaller
: molecules,
: the longer, the more like Stokes, which is basically Zimm.

c*******n
发帖数: 1648
7
Hehe, this is also one of my questions, if the knot has something to do with
the entanglement, why stiffer chains are generally easier to be entangled
than flexible chains. I guess flexible chains are easier to form kont(my
guess?)

【在 c*****e 的大作中提到】
: A knot, probably.
: Or loops in DNA/RNA

1 (共1页)
进入Macromolecules版参与讨论
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