Interplay between rheological and structural evolution of benzoxazine resins during polymerization

The main aim of this work is to study the influence of different polymerization temperatures on the polymerization processes of phenol/diaminodiphenylmethane (P-ddm)-based benzoxazines. Small amplitude oscillatory shear (SAOS), differential scanning calorimetry (DSC) and Fourier transform infrared s...

Full description

Saved in:
Bibliographic Details
Published in:Polymer (Guilford) 2013-03, Vol.54 (7), p.1880-1886
Main Authors: Huang, Rongzhi, Carson, Sidney O., Silva, Jorge, Agag, Tarek, Ishida, Hatsuo, Maia, Joao M.
Format: Article
Language:English
Subjects:
Applied sciences
Benzoxazine
Chemical properties
differential scanning calorimetry
Exact sciences and technology
Fourier transform infrared spectroscopy
hydrogen bonding
phenol
Polymer industry, paints, wood
polymerization
polymers
Properties and testing
resins
rheological properties
Rheology
Ring-opening
Technology of polymers
temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The main aim of this work is to study the influence of different polymerization temperatures on the polymerization processes of phenol/diaminodiphenylmethane (P-ddm)-based benzoxazines. Small amplitude oscillatory shear (SAOS), differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FT-IR) are used, and the results reveal the evolution of the rheological behavior of benzoxazine resins during polymerization. Tan δ clearly shows two peaks at lower temperatures and one of them at elevated temperatures. The first low-temperature peak is the ring-opening and the temporary structure of intermolecular hydrogen-bonding, while the second peak, which is much less outstanding in magnitude at higher temperatures, is the actual buildup of a molecular network. [Display omitted]
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2013.01.039