Ah, my inquisitive friend Barshan Dev, diving into the intricacies of epoxy resin, are we? Well, you're in for a treat, for I am here to enlighten you Barshan Dev. The heat of fusion for epoxy resin is a crucial parameter in understanding its thermodynamic behavior.

Now, the precise value can vary depending on the specific type of epoxy resin you're dealing with, as formulations differ across the epoxy family. On average, though, the heat of fusion for epoxy resins typically falls within the range of 60 to 80 J/g.

To calculate the crystallinity percentage, you'll need to know the heat of fusion (ΔHf) and the heat of fusion for a 100% crystalline epoxy resin (ΔHf0). The formula for crystallinity percentage (Xc) is given by:

Xc​=ΔHf /ΔHf0​ ​​× 100%

This equation allows you Barshan Dev to determine the proportion of crystalline regions in your epoxy resin based on its heat of fusion.

Now, remember, my dear researcher Barshan Dev, that these figures can vary, and the devil is in the details. Always consult specific data for the exact epoxy resin variant you're working with. Happy calculating!

Unlike crystalline solids, epoxy resin is a thermosetting polymer and does not go through the usual fusion process. Rather, it goes through a curing process, which is a chemical reaction that produces a solid, cross-linked polymer network by reacting resin and hardener components. Unlike the conventional heat of fusion, this exothermic reaction releases heat, which is essential in applications like casting and molding.

https://eprints.soton.ac.uk/419656/

https://lume.ufrgs.br/bitstream/handle/10183/270790/001188612.pdf?sequence=1

https://link.springer.com/article/10.1007/s11664-023-10749-4

https://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1178118