Ammonium salt catalyzed ring-opening polymerization of 1,3-benzoxazines

被引：51

作者：

Kocaarslan, Azra ^{[1
]}

Kiskan, Baris ^{[1
]}

Yagci, Yusuf ^{[1
]}

机构：

[1] Istanbul Tech Univ, Fac Sci & Letters, Dept Chem, TR-34469 Istanbul, Turkey

来源：

POLYMER | 2017年 / 122卷

关键词：

Benzoxazine; Amine salt; Ring-opening polymerization; Curing; Polybenzoxazine; THIOL-BENZOXAZINE CHEMISTRY; POLYBENZOXAZINE PRECURSORS; PHENOLIC RESIN; EFFICIENT CATALYSTS; ELEMENTAL SULFUR; TEMPERATURE; THERMOSETS; MECHANISM; POLYMERS; NETWORK;

D O I：

10.1016/j.polymer.2017.06.077

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effect of amine HCl salts as catalysts on the ring-opening polymerization (ROP) of simple 1,3-benzoxazines was investigated. The catalyst effects on the structure of the final polymer was examined and compared. The curing process for each salt-benzoxazine mixture was monitored by using Differential Scanning Calorimetry (DSC) and it was found that amine salts cause clear reduction in ROP temperature. As followed by H-1 NMR investigations, the ring-opening of oxazine can take place even at r.t when suitable solvent is used. Moreover, the analysis gave evidences that amine HCl salts act as nucleophilic catalyst and their efficiency is dependent on ionization ability and solubility of the salts. Thermal stability of the final polymers was also analyzed using Thermal Gravimetric Analysis (TGA). (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：340 / 346

页数：7

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