Journal
POLYMERS
Volume 15, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/polym15040809
Keywords
shape memory; epoxy resin; bulk polymerization; recycling; thermal-plastic
Categories
Ask authors/readers for more resources
In this study, linear thermoplastic epoxy polymers (EPx) with shape memory properties were prepared using a bifunctional monoamine diglycolamine (DGA) as a curing agent, and bifunctional rigid epoxy resin (E-51) and bifunctional flexible epoxy resin (PPGDGE) in a bulk polymerization reaction. The introduction of PPGDGE can adjust the T-g of the material and improve its fracture strain and micro-phase separation structure. The material can be easily recycled and reprocessed, and shows potential for 3D printing or other thermoplastic remolding.
Conventional epoxy polymers are thermo-set and difficult to recycle and reuse. In this study, a series of linear thermoplastic epoxy polymers (EPx) with shape memory properties were prepared by using a bifunctional monoamine diglycolamine (DGA) as a curing agent and an equivalent amount of bifunctional rigid epoxy resin (E-51) and bifunctional flexible epoxy resin (polypropylenglycol diglycidyl ether, PPGDGE) in a bulk polymerization reaction. The results showed that these samples can fully react under the curing process of, 60 degrees C/2 h, followed by 80 degrees C/2 h, followed by 120 degrees C/2 h. The introduction of different contents of PPGDGE can adjust the T-g of the material to adapt to different environmental requirements, and can significantly increase the fracture strain of the material and improve its micro-phase separation structure. Thus, R-f of the material is close to 100%, and R-r is increased from 87.98% to 97.76%. Importantly, this linear chain structure allows the material to be easily recycled and reprocessed by dissolving or melting, and also means the material shows potential for 3D printing or other thermoplastic remolding.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available