FTIR peak ratios with calculated h-BN weight percent from Fig. 5.

Sample	R/TO ratio	h-BN wt%	σ ±%
AR-BNNTs	0.357	0.37	0.0248
Chee et al.	0.0507	0.0257	0.00351
h-BN	0.98	1	—
Ox-BNNTs	0.382	0.398	0.0265
OW-BNNTs	0.475	0.502	0.0329
SAIF-BNNTs	0.32	0.328	0.0222
TX-BNNTs	0.266	0.267	0.0184
SP20-BNNTs	0.395	0.413	0.0274
TW20-BNNTs	0.52	0.553	0.036