Safety glasses used in machine tools require good impact and solvent resistances and high transparency. These requirements can be satisfied by glass/polycarbonate (G/PC)laminated safetyglassincorporating acrylicinterlayer(ACIL).Recently,therehasbeen an increasing demand for higher impact resistance and light-weight G/ PC laminated safetyglasses because ofhigh-speed and precision machining. To improve the impact resistance of G/PC laminated safety glass under the same laminate configuration,

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... ncement in the energy absorption performance of ACIL is required.For the same,in this study,cellulosenanofibers (CNFs)having a diameter ofa fewdozen nanometers and high aspect ratio were focused as a filler.Addition ofCNFs to ACIL is expected to enhance the energy absorption ability of the G/PC laminated safety glass owing to the internal friction at theinterfaceand microcracking neartheCNFs,with retaining thetransparencyofACIL. In this study, ACIL with CNFs (CNF/ACIL)was fabricated by using a bead mill and tensile tests were performed on the material. In addition, drop-weight tests were performed on the G/ PC laminated safetyglass incorporating CNF/ ACIL to evaluate its impact resistance.Results from the testsshowed that thestressat 300% strain ofCNF/ACIL exhibited a maximum valuewhen theCNF concentration was 0.1 wt% and decreased monotonically with further increase in the CNF concentration. Further, the G/ PC laminated safety glass incorporating CNF/ACIL showed an enhanced impact resistance when the CNF concentration was not more than 0.5 wt%.