In this work, the polyethylene (PE) and polypropylene (PP) percentage is controlled at 50:50 to make the composite form a co-continuous structure; the hexagonal boron nitride (h-BN) is wrapped by thermoplastic elastomer styrene-ethylene-propylene-styrene (SEPS). This approach enables the localized distribution of h-BN at the interface of the co-continuous structure of PE/PP/SEPS/h-BN composite material, allowing the construction of a heat conduction path, thereby improving the thermal conductivity of PE/PP. Theoretical calculation predicted the localized distribution of SEPS at the interface of the PE/PP composite co-continuous structure. 2The thermal conductivity of the composites can be improved by 57.7% by adding 10 wt% h-BN, presenting a commercial potential of such composites in heat dissipation applications.

Plant exine capsules are natural microscale capsules that are highly physically robust and chemically resilient.