Abstract
Pseudo-interpenetrating polymer networks (IPNs) of an epoxy resin and poly(styrene), PS, were prepared by the simultaneous mode of synthesis. The structure of the epoxy resin, N', N'- tetraglycidyl - 4,4'- diamine diphenyl methane, TGDDM, (Araldite MY- 720), was confirmed by infrared spectroscopy, elemental analysis and nuclear magnetic resonance (NMR) spectroscopy. The polymer networks produced from this epoxy resin cured with ethylenediamine (EDA) or triethylenetetramine (TETA) and IPNs were investigated by means of their morphology, thermal and mechanical properties. Differential scanning calorimetry (DSC) showed that the maximum conversion (a) was reached after 4 hours of cure at 40°C, using either EDA or TETA. The reactivity of TGDDM using TETA was approximately the same as that using EDA. The stability of the materials at PS/TGDDM compositions of 2/98, 6/94 and 8/92 (styrene wt.% / epoxy resin wt.%). was approximately the same as that of the epoxy resin cured by EDA and TETA. The mechanical properties of IPNs at low compositions of PS are similar to those of the epoxy resin cured with EDA and TETA. The curing agent, reaction rate, and composition of PS strongly influence the morphology of the materials.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
