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joys1995 committed Jun 19, 2024
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2 changes: 0 additions & 2 deletions categories/index.html
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Expand Up @@ -40,8 +40,6 @@ <h3>LATEST POSTS</h3>
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<li><a href="/posts/my-first-post/">混合溶液粘度</a></li>

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23 changes: 1 addition & 22 deletions index.html
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<main>


<article>
<h1><a href="https://joys1995.github.io/posts/my-first-post/">混合溶液粘度</a></h1>
<time datetime="2024-06-18T06:28:38">18.06.2024 06:28</time>

<div>
关于混合溶液的粘度预测是一个古老的话题,很朴素的,类似密度等常规物性,我们预计混合溶液的粘度在理想情况下,应该具有线性分布:
以两组分为例:
$$ \eta = x\eta_{\text{1}} + (1-x)\eta_{\text{2}} $$ 但事实上,实际混合溶液的粘度都低于两者的线性叠加
https://pubs.acs.org/doi/epdf/10.1021/ja02254a001
后来,Arrhenius在1887年提出了基于热力学的混合粘度理论公式:
$$ \log\eta = x\log\eta_{\text{1}} + (1-x)\eta_{\text{2}} $$
在1949年,Nature: Mixture Law for Viscosity对参数进行了局部修正 $$ \log\eta = N_1\log\eta_{\text{1}} + N_2\log\eta_{\text{2}}+N_1N_2d $$
这一点推测是由于分子大小和流动性的差异导致混合体系的粘度相较线性值下降更为明显
在溶解溶质的溶液中,对于稀溶液,粘度可以被下述公式计算得到 $$ \frac{\eta_{\text{S}}}{\eta_{\text{O}}} = 1 + A\sqrt{c} $$ 当浓度增加时, $$ \frac{\eta_{\text{S}}}{\eta_{\text{O}}} = 1 + A\sqrt{c} + Bc $$ 当浓度进一步增加时, $$ \frac{\eta_{\text{S}}}{\eta_{\text{O}}} = 1 + A\sqrt{c} + Bc + Cc^2 $$

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Expand All @@ -54,8 +35,6 @@ <h3>LATEST POSTS</h3>
<div>
<ul>

<li><a href="/posts/my-first-post/">混合溶液粘度</a></li>

</ul>
</div>
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20 changes: 1 addition & 19 deletions index.xml
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<link>https://joys1995.github.io/</link>
<description>Recent content on Joey Blog</description>
<generator>Hugo -- gohugo.io</generator>
<language>en-us</language>
<lastBuildDate>Tue, 18 Jun 2024 06:28:38 +0000</lastBuildDate><atom:link href="https://joys1995.github.io/index.xml" rel="self" type="application/rss+xml" />
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<title>混合溶液粘度</title>
<link>https://joys1995.github.io/posts/my-first-post/</link>
<pubDate>Tue, 18 Jun 2024 06:28:38 +0000</pubDate>

<guid>https://joys1995.github.io/posts/my-first-post/</guid>
<description>关于混合溶液的粘度预测是一个古老的话题,很朴素的,类似密度等常规物性,我们预计混合溶液的粘度在理想情况下,应该具有线性分布:
以两组分为例:
$$ \eta = x\eta_{\text{1}} + (1-x)\eta_{\text{2}} $$ 但事实上,实际混合溶液的粘度都低于两者的线性叠加
https://pubs.acs.org/doi/epdf/10.1021/ja02254a001
后来,Arrhenius在1887年提出了基于热力学的混合粘度理论公式:
$$ \log\eta = x\log\eta_{\text{1}} + (1-x)\eta_{\text{2}} $$
在1949年,Nature: Mixture Law for Viscosity对参数进行了局部修正 $$ \log\eta = N_1\log\eta_{\text{1}} + N_2\log\eta_{\text{2}}+N_1N_2d $$
这一点推测是由于分子大小和流动性的差异导致混合体系的粘度相较线性值下降更为明显
在溶解溶质的溶液中,对于稀溶液,粘度可以被下述公式计算得到 $$ \frac{\eta_{\text{S}}}{\eta_{\text{O}}} = 1 + A\sqrt{c} $$ 当浓度增加时, $$ \frac{\eta_{\text{S}}}{\eta_{\text{O}}} = 1 + A\sqrt{c} + Bc $$ 当浓度进一步增加时, $$ \frac{\eta_{\text{S}}}{\eta_{\text{O}}} = 1 + A\sqrt{c} + Bc + Cc^2 $$</description>
</item>

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11 changes: 2 additions & 9 deletions sitemap.xml
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xmlns:xhtml="http://www.w3.org/1999/xhtml">
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<lastmod>2024-06-18T06:28:38+00:00</lastmod>
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<loc>https://joys1995.github.io/posts/</loc>
<lastmod>2024-06-18T06:28:38+00:00</lastmod>
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<loc>https://joys1995.github.io/posts/my-first-post/</loc>
<lastmod>2024-06-18T06:28:38+00:00</lastmod>
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</url><url>
<loc>https://joys1995.github.io/</loc>
</url><url>
<loc>https://joys1995.github.io/tags/</loc>
</url>
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2 changes: 0 additions & 2 deletions tags/index.html
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Expand Up @@ -40,8 +40,6 @@ <h3>LATEST POSTS</h3>
<div>
<ul>

<li><a href="/posts/my-first-post/">混合溶液粘度</a></li>

</ul>
</div>
</div>
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