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关注:1
2013-05-23 12:21
求翻译:增加中和度,实质上是增加反应体系中 -COOK离子的浓度,而-COOK在水中的离解能力是远远大于-COOH的,所以-COOK增多导致网络中出现更多离子化的-COO-,网络链上羧酸根阴离子增多有利于链的伸展,而且不同链之间的斥力也增强,所以聚合网络的扩展推动力增大,吸水率增大;然而随着中和度的增加,体系中K+对羧酸根阴离子的屏蔽效应逐渐明显,而这种屏蔽效应将削弱链与链之间或同链上相邻羧酸根阴离子的排斥力,使网络的扩展推动力减少,所以中和度过大时,吸水率反而降低[109-110]。是什么意思? 待解决
悬赏分:1
- 离问题结束还有
增加中和度,实质上是增加反应体系中 -COOK离子的浓度,而-COOK在水中的离解能力是远远大于-COOH的,所以-COOK增多导致网络中出现更多离子化的-COO-,网络链上羧酸根阴离子增多有利于链的伸展,而且不同链之间的斥力也增强,所以聚合网络的扩展推动力增大,吸水率增大;然而随着中和度的增加,体系中K+对羧酸根阴离子的屏蔽效应逐渐明显,而这种屏蔽效应将削弱链与链之间或同链上相邻羧酸根阴离子的排斥力,使网络的扩展推动力减少,所以中和度过大时,吸水率反而降低[109-110]。
问题补充: |
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2013-05-23 12:21:38
Increase in the degree and, in essence, is to increase the reaction system-COOK ion concentration, and-COOK in water dissociation capability is far greater than the-COOH, the so-COOK lead to an increase in the network appear more ionized-COO- the network chain carboxylic acid anions favor an increas
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2013-05-23 12:23:18
正在翻译,请等待...
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2013-05-23 12:24:58
Increases neutral, in the essence is increases in the reacting system - the COOK ion density, but - COOK is bigger than - COOH by far in water dissociation ability, therefore - COOK increases causes in the network to appear more ionizations - COO-, on the network chain the carboxylic acid root anion
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2013-05-23 12:26:38
Increased neutralization of, essentially is increased reaction system in the-COOK ion of concentration, and-COOK in water in the of dissociation ability is far is greater than the-COOH of, so-COOK increased led network in the appears more ion of of-COO-, network chain Shang carboxylic acid root Yin
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2013-05-23 12:28:18
3.5 may know by Figure, neutral has to the product water-absorptivity affects greatly, neutral is 90% time water-absorptivity is high
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