The phrase "as the core material" is correct and usable in written English.
It can be used when discussing the main substance or essential component of something, often in a technical or academic context.
Example: "The researchers identified cellulose as the core material in the production of biodegradable plastics."
Alternatives: "as the primary substance" or "as the main component".
Polyurethane foams containing MWNT were used as the core material.
The microcapsules made in this study using RT21® as the core material and MMA shells were dried in the laboratory.
The sandwich-type panel uses thin-walled square tubes as the core material with mild steel outer plates.
The AALs produced with perfluorohexane as the core material had larger particle sizes than those with perfluoropentane.
Commercially produced autoclaved aerated lightweight concrete brick of dimensions 600 × 200 × 70 mm was used as the core material for groups 4 and 9.
In this communication, we describe an original morphology of such nanocomposites using spindle-shaped hematite as the core material and salicylate-intercalated Mg-Al-LDH as the shell.
On the other hand, bond points are treated as a deformable bicomponent composite material composed of the sheath material as matrix and the core material as fibres having random orientations.
WGA-NP with PLGA as the core materials obtained elevated lysosome escape and enhanced transcytosis after 2 h incubation.
Two independent biocompatible polymer systems, polyetherketoneketone (PEKK) and gelatin as the core materials while maintaining the shell polymer with polycaprolactone (PCL), were utilized.
To investigate the effect of the structure of the core nanomaterials, three different types of CNT networks: a 1D CNT array, a 2D CNT film, and a 3D CNT cluster, were designed and evaluated as the core materials for thermopower wave generation.
The second iteration, frequencies (synthetic variations) was working with synthesize sound/physical matter as the core materials.
