c*********e
发帖数: 119 | 1 我知道测IV可以得到高分子的分子量。它的单位是dL/g。它的物理意义是什么?怎么用最
精练的语言描述出来?我查了很多书都没有找到。
可别告诉我怎么测它。怎么测它我是知道的。：)
Thanks! | c***r
发帖数: 4631 | 2
最
怎么测？
【在 c*********e 的大作中提到】
: 我知道测IV可以得到高分子的分子量。它的单位是dL/g。它的物理意义是什么?怎么用最
: 精练的语言描述出来?我查了很多书都没有找到。
: 可别告诉我怎么测它。怎么测它我是知道的。：)
: Thanks!
| c*********e
发帖数: 119 | 3 Are you kidding or donot really know that?
IV=limit((Nr-1)/c),c->0
or, IV=limit(Nsp/c), c->0
Nr---relative viscosity=N/No, where,N--viscosity of solution, No--viscosity of
pure solvent
Nsp--specific viscosity=Nr-1
用
【在 c***r 的大作中提到】
:
: 最
: 怎么测？
| w********h
发帖数: 12367 | 4 here is one paper for that.
"Equation state for polymer solution"
Polymer, 2002, 43, 3447-3453
or you can check Flory and Fox's original paper in 1951:
JACS, 1951, 73, 1909
最
【在 c*********e 的大作中提到】
: 我知道测IV可以得到高分子的分子量。它的单位是dL/g。它的物理意义是什么?怎么用最
: 精练的语言描述出来?我查了很多书都没有找到。
: 可别告诉我怎么测它。怎么测它我是知道的。：)
: Thanks!
| c*********e
发帖数: 119 | 5 I am reading the paper of "Equation state for polymer solution". It's a little
difficult for me.
用
【在 w********h 的大作中提到】
: here is one paper for that.
: "Equation state for polymer solution"
: Polymer, 2002, 43, 3447-3453
: or you can check Flory and Fox's original paper in 1951:
: JACS, 1951, 73, 1909
:
: 最
| w********h
发帖数: 12367 | 6 in fact, some terms are just originated from theories.
[eta] is also like that.
eta(sp)/C=[eta]+AC+...
when C--->0, you can get one intrinsic value for one polymer in one solvent at
a certain temperature, that's [eta].
[eta] is closely related to Rg.
I happened to see that paper and think it is rather comprehensive.
little
么
【在 c*********e 的大作中提到】
: I am reading the paper of "Equation state for polymer solution". It's a little
: difficult for me.
:
: 用
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