Highly efficient synthesis of polyvinyl butyral (PVB) using a membrane dispersion microreactor system and recycling reaction technology

被引：31

作者：

Lin, Xiyan ^{[1
]}

Yan, Stone ^{[1
]}

Zhou, Baiyang ^{[1
]}

Wang, Kai ^{[1
]}

Zhang, Jisong ^{[1
]}

Luo, Guangsheng ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem Engn, State Key Lab Chem Engn, Beijing 100084, Peoples R China

来源：

GREEN CHEMISTRY | 2017年 / 19卷 / 09期

基金：

中国国家自然科学基金;

关键词：

POLY(VINYL BUTYRAL); MULTISTEP SYNTHESIS; FLOW SYNTHESIS; REACTORS;

D O I：

10.1039/c7gc00670e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We herein propose a highly efficient method for the synthesis of polyvinyl butyral (PVB), an important resin material used for laminated glass in vehicles. The condensation reaction between polyvinyl alcohol (PVA) and n-butanal was successfully implemented in a reaction system containing a membrane dispersion microreactor and an aging vessel reactor, allowing the energy costs associated with cooling and mixing of the reactant solutions to be reduced. Upon changing the original reactant from a PVA-butanal emulsion to a PVA-HCl solution, the microreactor system allowed the development of a new recycling technology for the reuse of HCl, water, and excess n-butanal present in the product solution. In addition, with the aid of a two-step n-butanal feeding method, the developed recycling technology resulted in a 98.7% n-butanal utilization ratio, while the consumption of HCl and water during the reaction process was reduced by 85.6%. These results indicate that our novel process represents a more environmentally friendly approach to the PVB synthesis.

引用

页码：2155 / 2163

页数：9