Formation of Poly(vinyl alcohol)-iodine Complexes in Solution

Hu YANG; Rong-shi CHENG

doi:10.14028/j.cnki.1003-3726.2008.01.003

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Formation of Poly(vinyl alcohol)-iodine Complexes in Solution

更新时间：2022-09-18

- Formation of Poly(vinyl alcohol)-iodine Complexes in Solution
- Polymer Bulletin Vol. 21, Issue 1, Pages: 7-15(2008)
- 作者机构：
  
  南京大学化学化工学院介观化学教育部重点实验室，高分子科学与工程系，南京　210093
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2008.01.003
  CLC：
- Published：2008-01，
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Hu YANG, Rong-shi CHENG. Formation of Poly(vinyl alcohol)-iodine Complexes in Solution. [J]. Polymer Bulletin 21(1):7-15(2008)
DOI：

Hu YANG, Rong-shi CHENG. Formation of Poly(vinyl alcohol)-iodine Complexes in Solution. [J]. Polymer Bulletin 21(1):7-15(2008) DOI： 10.14028/j.cnki.1003-3726.2008.01.003.

摘要

聚乙烯醇(PVA)在碘-碘化钾混合水溶液中能形成蓝色复合物

该复合材料在人们日常生活中已广泛应用。本文综述了在稀溶液条件下聚乙烯醇-碘复合物的形成

并对其复合物形成的可能影响因素

如:PVA 的分子量、链结构的规整度、1

2-羟基结构、支链以及浓度、添加其它物质和反应时间等

进行了系统论述。从聚集模型观点看

在复合物中

碘主要是以线性多聚碘负离子形式存在的

如:I

和I

等;而PVA 链通过分子间氢键作用形成链间聚集将多聚碘负离子包裹在内而形成复合物。

Abstract

PVA-iodine complexes could be formed in kI-iodine aqueous solution

which materials have been already applied widely in daily life. In this paper

the formation of PVA-iodine complexes in dilute aqueous solution has been reviewed. The effects of the degree of polymerization

stereo-regularity

2 glycol content

concentration of PVA

additional reagents and reaction time on the color development due to PVA-iodine complexes have been studied. From the viewpoint of aggregation mode

the structure of iodine in the complexes is linear polyiodine ions such as I

and I

whereas PVA chains are readily to aggregate by intermolecular hydrogen bonding

and each polyiodine is surrounded by some parallelly-oriented PVA chains to form complexes.

关键词

聚乙烯醇(PVA)聚乙烯醇-碘复合物聚集模型

Keywords

Poly(vinyl alcohol)(PVA);PVA-iodine complexesAggregation model

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