Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a) Influence of different curing agents (H-957, DADPE and DADPS) on the stress intensity factor, KC of modified epoxy systems. Reprinted with permission from ref. [11], Copyright [2003], John Wiley and Sons. (b) Fracture energy of PU modified epoxy systems obtained with various molecular weights (600–1500 g·mol−1) of polyethylene glycol. Reprinted with permission from ref. [57], Copyright [2014], John Wiley and Sons.
