Study on the Graft Modification of PVC with Epoxy Fat Acid Methyl Ester and the Plasticizing Properties

Hua-zhen Sun; Po Yang; Hao-jun Fan; Yi Chen

doi:10.3724/SP.J.1105.2014.13227

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Study on the Graft Modification of PVC with Epoxy Fat Acid Methyl Ester and the Plasticizing Properties

Research Article | 更新时间：2021-03-19

- Study on the Graft Modification of PVC with Epoxy Fat Acid Methyl Ester and the Plasticizing Properties
- Acta Polymerica Sinica Issue 2, Pages: 233-238(2014)
- 作者机构：
  
  四川大学制革清洁技术国家工程实验室四川大学合成革研究中心,成都,610065
- 作者简介：
- 基金信息：
- DOI：10.3724/SP.J.1105.2014.13227
  CLC：
- Published：20 February 2014，
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Hua-zhen Sun, Po Yang, Hao-jun Fan, Yi Chen. Study on the Graft Modification of PVC with Epoxy Fat Acid Methyl Ester and the Plasticizing Properties. [J]. Acta Polymerica Sinica (2):233-238(2014)
DOI：

Hua-zhen Sun, Po Yang, Hao-jun Fan, Yi Chen. Study on the Graft Modification of PVC with Epoxy Fat Acid Methyl Ester and the Plasticizing Properties. [J]. Acta Polymerica Sinica (2):233-238(2014) DOI： 10.3724/SP.J.1105.2014.13227.

摘要

通过巯基与聚氯乙烯（PVC）氯原子的亲核反应将羧基引入PVC大分子链，再利用环氧脂肪酸甲酯与羧基之间的反应，通过化学键将其连接入PVC大分子链，实现对PVC内增塑.用傅里叶红外（FTIR）、核磁共振（1H-NMR）、示差扫描量热法（DSC）对改性产物进行了表征.FTIR、1H-NMR结果表明，环氧脂肪酸甲酯成功共价连接到了PVC大分子链上，接枝率为1.2 mol%；DSC测试结果显示，所采用的环氧脂肪酸甲酯改性PVC方法能有效降低PVC的玻璃化转变温度（Tg），5.6 wt%的增塑剂可将PVC的Tg从81.4℃降至37.8℃；增塑剂耐溶剂抽出性与耐挥发性实验结果表明，环氧脂肪酸甲酯在测试时间内无损失，增塑剂迁移得到彻底抑制.

Abstract

To suppress the migration of epoxy fat acid methyl ester (EFAME) from plasticized PVC

EFAME

as an internal plasticizer

was covalently bound to poly(vinyl chloride) (PVC) chains via a special synthesis process. The carboxyl-containing PVC (PVC-TSA) was synthesized through nucleophilic substitution reaction between PVC and thiosalicylic acid (TSA)

and then EFAME was added to react with PVC-TSA to gain the internally plasticized PVC (PVC-TSA-EFAME). Fourier transform infrared spectrometry (FTIR) and hydrogen spectrum nuclear magnetic resonance (1H-NMR) confirmed the structures of PVC-TSA and PVC-TSA-EFAME. The 1H-NMR data were further used to calculate the degree of modification. It was found that a degree of modification of 1.2 mol% was achieved using the method of this work. The glass transition temperature (Tg) determination was realized by means of differential scanning calorimetry (DSC). The Tgs of PVC and PVC-TSA-EFAME were respectively 81.4℃ and 37.8℃. Compared to PVC

the marked decrease of Tg was attributed to the introduction of EFAME which increased the flexibility of PVC chains. The extraction and fogging experiments showed that almost no extraction or atomization loss was detected in PVC-TSA-EFAME

which suggested that the migration of EFAME from the plasticized PVC was completely suppressed.

关键词

聚氯乙烯环氧脂肪酸甲酯接枝改性内增塑迁移

Keywords

PVCEpoxy fat acid methyl esterGraft modificationInternal plasticizationMigration

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Related Institution

MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University

Polymer Alloy Laboratory Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology

Polymer Alloy Lab,Shanghai Key Laboratory of Advanced Polymeric Materials,Key Laboratory for Ultrafine Materials of Ministry of Education,School of Materials Science and Engineering, East China University of Science and Technology

National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang 550014

Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University

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