Effect of PVA with Low DP on Solubility in Water of PVA with High DP

Yun DANG; Jun-hua ZHANG

您当前的位置：

首页 >

文章列表页 >

Effect of PVA with Low DP on Solubility in Water of PVA with High DP

更新时间：2022-09-18

- Effect of PVA with Low DP on Solubility in Water of PVA with High DP
- Polymer Bulletin Vol. 27, Issue 1, Pages: 49-53(2014)
- 作者机构：
  
  高分子材料工程国家重点实验室，四川大学高分子研究所，成都　610065
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2014-01，
  
  Received：02 July 2013，
  
  Revised：27 August 2013，
扫描看全文
Yun DANG, Jun-hua ZHANG. Effect of PVA with Low DP on Solubility in Water of PVA with High DP. [J]. Polymer Bulletin 27(1):49-53(2014)
DOI：

Yun DANG, Jun-hua ZHANG. Effect of PVA with Low DP on Solubility in Water of PVA with High DP. [J]. Polymer Bulletin 27(1):49-53(2014) DOI：

摘要

将低聚合度聚醋酸乙烯酯(PVAc(03))和高聚合度聚醋酸乙烯酯(PVAc(17))按不同比例在甲醇中共混，加适量碱液醇解制得改性的高聚合度聚乙烯醇(PVA)。经差示扫描量热法(DSC)、X射线衍射(XRD)等手段分析PVA(03)对PVA(17)的影响，结果表明：当PVA(03)在PVA(17)中的浓度不超过10%时，改性PVA(17)的熔融温度、结晶度变化很小，而在水中的溶解性有较大程度的改善。这是由于PVA(03)进入了 PVA(17)的非晶区，PVA(03)更容易被水溶解，溶解后则在聚合物内部形成通道，因此水溶性增强。

Abstract

Modified polyvinyl alcohol (PVA) were prepared by mixing PVAc(03) with low degree of polymerization (low DP) and PVAc (17) with high DP into methanol and then adding appropriate lye into the solution to proceed alcoholysis. The effect of PVA (03) on modified PVA was studied by differential scanning calorimetry (DSC)

X-ray diffraction (XRD). The results showed that when the concentration of PVA(03) was less than 10%

the melting point and degree of crystallinity of modified PVA were slightly changed but the solubility in water was largely improved. This was because PVA (03) come into amorphous region

when polymer contacted with water

PVA (03) first dissolved in water

after the PVA(03) dissolved

it formed a hole in the polymer

so the solubility of PVA(17) was largely improved..

关键词

聚乙烯醇低聚合度改性溶解性

Keywords

Poly (vinyl alcohol)Low DPModifiedSolubility

references

更多指标>

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

A Review on Adsorption of Heavy Metal Ions by Modified Nanocellulose-Based Materials

The Progress in the Application of Petroleum Resins in Rubber Products

Preparation and Properties of Tartaric Acid Doped Polyaniline Nanofibers

Research Process in the Molecular Structure of Polycarboxylate-type High Performance Superplasticizer and its Modifications

Research Progress of Nanoparticles Modified Water-Based Drilling Fluid

Related Author

No data

Related Institution

School of Public Health,Gansu University of Chinese Medicine

College of Petrochemical Engineering Liaoning Shihua University

College of Environment and Safety Engineering, Qingdao University of Science and Technology

College of Materials Science and Engineering, Qingdao University of Science and Technology

College of Science, Nanjing Forestry University

⁰