Experimental study demonstrates the synthesis of recyclable necklace-like polysiloxane polymers, indicating strong potential for durable electronic circuit packaging.
In this research, a recyclable ordered necklace-like "trimeric-DDSQ"-PDMS polysiloxane (DDDP) is presented. Specific bifunctional organosilicon building blocks, namely vinyl-terminated double-decker silsesquioxane (DDSQ-Vi), hydrogen-terminated double-decker silsesquioxane (DDSQ-H), and the dumbbell-shaped precursor (DPD), are fabricated. Stepwise polymerization from DPD precursor enables the synthesis of ordered necklace-like DDDPs. In this way, no additional purification or separation steps are necessary. DDDP contains a high proportion of nanocage-shaped DDSQ within its organosilicon backbone. This structure endows DDDP with outstanding thermal stability, optical transparency, favorable mechanical characteristics, and recyclability. These properties highlight the potential of DDDP in applications such as electronic circuit packaging and material recycling.
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Fan et al. (2025) studied this question.
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