Document Details Document Type : Article In Journal  Document Title : Polybenzoxazine Precursors As Self-Healing Agents for Polysulfones Polybenzoxazine Precursors As Self-Healing Agents for Polysulfones   Document Language : English  Abstract : In this work, a novel self-healing system based on the use of polybenzoxazine precursor (PBP) as a healing additive is presented. PBP (M-n = 2300 g/mol, M-w/M-n = 2.6) is facilely synthesized in a reasonable yield by Mannich type polycondensation of bisphenol A, 1,6-diaminohexane with paraformaldehyde. The additive PBP faintly undergoes a thermal ring-opening reaction when contained in polysulfone (PSU) films. Thermal treatment at 160 degrees C enables PBP to chemically bind to PSU chains and form networks through the Friedel Crafts reaction, demonstrating a novel self-healing behavior. The extent of the recovery was studied using a stress elongation (%) test and found to be 55%. Thermal properties of the polybenzoxazine precursor and the healed sample were investigated.  ISSN : 0024-9297  Journal Name : MACROMOLECULES  Volume : 46  Issue Number : 22  Publishing Year : 1434 AH 2013 AD  Article Type : Article  Added Date : Monday, July 17, 2017  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email O Taskin Taskin, O Researcher     B Kiskan Kiskan, B Researcher     Y Yagci Yagci, Y Researcher     Files File Name Type Description  42042.pdf pdf   Back To Researches Page