Synthesis and characterization of polyamide-imides based on the different chain length of amino acids in molten TBAB as a green media-Reference-Cited by-同舟云学术

Synthesis and characterization of polyamide-imides based on the different chain length of amino acids in molten TBAB as a green media

Published:2016-01-01 Issue:4 Volume:5 Page:
ISSN:2191-9550
Container-title:Green Processing and Synthesis
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Author:

Feng Jinhui,He Fuyan,Yang Zhizhou,Yao Jinshui

Abstract

AbstractAs a green, safe and eco-friendly solvent, ionic liquids (ILs) have been widely used in organic syntheses. In this paper, polyamide-imides (PAIs) based on different chain length of amino acids were synthesized by two methods, i.e. in the presence of tetrabutyl ammonium bromide (TBAB) as IL and via conventional polycondensation. The obtained results have been compared. It was confirmed that by the polymerization method in the IL, the PAIs can get higher molecular weight and viscosity and better heat resistance and crystallinity after annealing treatment. All polymers showed higher tensile strength (122–134 MPa) and tensile modulus (2.4–3.0 GPa). Among them, the molecular weight of PAIs based on glycine was characterized by gel permeation chromatography.

Funder

Natural Science Foundation, China

Publisher

Walter de Gruyter GmbH

Subject

Health, Toxicology and Mutagenesis,Industrial and Manufacturing Engineering,Fuel Technology,Renewable Energy, Sustainability and the Environment,General Chemical Engineering,Environmental Chemistry

Link

https://www.degruyter.com/document/doi/10.1515/gps-2016-0033/pdf

Reference48 articles.

1. Insertion of novel optically active poly(amide-imide) chains containing pyromellitoyl-bis-l-phenylalanine linkages into the nanolayered silicates modified with l-tyrosine through solution intercalation

2. Improved solubilization of pyromellitic dianhydride and 4,4′-oxydianiline in ionic liquid by the addition of zwitterion and their polycondensation