Preparation of Dimethyl Adipate by Alcoholysis of Waste Nylon 66

Mei HUANG; Fu-sheng LIU; Xiu-yan SONG; Zhan-qian SONG

doi:10.14028/j.cnki.1003-3726.2018.02.008

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Preparation of Dimethyl Adipate by Alcoholysis of Waste Nylon 66

更新时间：2022-09-05

- Preparation of Dimethyl Adipate by Alcoholysis of Waste Nylon 66
- Polymer Bulletin Vol. 31, Issue 2, Pages: 59-65(2018)
- 作者机构：
  
  1.青岛科技大学　化工学院，青岛　266042
  2.青岛科技大学　化学与分子工程学院，青岛　266042
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2018.02.008
  CLC：
- Published：20 February 2018，
  
  Received：26 May 2017，
  
  Revised：11 November 2017，
扫描看全文
Mei HUANG, Fu-sheng LIU, Xiu-yan SONG, Zhan-qian SONG. Preparation of Dimethyl Adipate by Alcoholysis of Waste Nylon 66. [J]. Polymer Bulletin 31(2):59-65(2018)
DOI：

Mei HUANG, Fu-sheng LIU, Xiu-yan SONG, Zhan-qian SONG. Preparation of Dimethyl Adipate by Alcoholysis of Waste Nylon 66. [J]. Polymer Bulletin 31(2):59-65(2018) DOI： 10.14028/j.cnki.1003-3726.2018.02.008.

摘要

以浓硫酸为催化剂，对尼龙66(PA66)甲醇醇解反应进行了研究。采用红外光谱(FT-IR)和核磁共振技术(

H NMR)对醇解产物进行了表征，并确认醇解产物为己二酸二甲酯(DMA)和己二胺(HMD)。采用 L

)正交实验方法，考察了反应温度、反应时间、催化剂用量及甲醇用量等因素对醇解反应结果的影响，并获得较佳工艺条件为：PA66和硫酸的摩尔比1：2；PA66和甲醇的摩尔比1：20；反应温度为120℃；反应时间为 5h。在此工艺条件下，PA66转化率为100%，DMA和HMD的收率分别达到86. 04%和88. 62%。

Abstract

The methanolysis of nylon 66 (PA66) was investigated using concentrated sulfuric acid (H

) as a catalyst. The structures of the products were characterized by FT-IR and

H NMR

and the results showed that the obtained products are dimethyl adipate (DMA) and hexamethylene diamine (HMD)

respectively. Using L

) orthogonal experiment

the effects of temperature

time

dosage and methanol dosage on the methanolysis reaction were studied. And the optimum reaction conditions were obtained: the molar ratio of PA66 to H

is 1:2

the molar ratio of PA66 to methanol is 1:20

reaction temperature is 120℃

reaction time is 5h. Under these conditions

the conversion of PA66 was 100%

the yields of DMA and HMD were reached to 86. 04% and 88. 62%

respectively.

关键词

尼龙66醇解己二酸二甲酯己二胺

Keywords

Nylon 66AlcoholysisDimethyl adipateHexamethylene diamine

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School of Textile and Material Engineering, Dalian Polytechnic University

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