High flexural modulus of PLA composites for FDM 3D printing using multifunctional octaspherosilicates

Bogna Sztorch, Julia Głowacka, Eliza Romanczuk-Ruszuk, Dariusz Brząkalski, Bogdan Marciniec, Robert E. Przekop
2023 · doi:10.21203/rs.3.rs-3759173/v1
preprint OA: closed
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Abstract

This work extends prior investigations into creating a new nanocomposite using modified silsesquioxanes and spherosilicates. These modifiers are used as additives to PLA to manage its properties specifically for FDM 3D printing. Following the chemical composition and the ratio of functional groups, the miscibility and reactivity of the additives in the polymer matrix, their effect on the rheology and mechanical properties of the material, and the water contact angle of the surface can be controlled. The most important aspect is achieving better melting of the material during printing, which, combined with the appropriate printing parameters, can ultimately produce more robust objects with fewer voids and discontinuities.

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