Interfacial polymerisation process for preparation of phase change material capsule

The present invention describes process for preparing phase change material (PCM) capsule wherein the PCM is employed for thermoregulatory mechanism such as thermal storage, and thermal regulation. It finds applications in thermo-regulated textile. The PCM capsules of this invention are having better stability to thermal heat, solvent and reduced diffusion rate. More particularly, the capsules of the present invention have high core content and high encapsulation efficiency without compromising/scarifying the wall strength and or wall porosity. The core comprising of organic compounds such as hydrophobic aliphatic alkanes, alcohols, or acids, while the wall consists of natural or synthetic polymer exemplified by but not limited to polyurea, urea formaldehyde, melamine formaldehyde resins. The invention also discloses a process for preparing the PCM capsules. Particularly the capsules are prepared through interfacial polymerization. The monomer preferably used is diisocyanate and diamine along with n-octadecane as core.