Biobased carbon content of resin extracted from polyethylene composite by carbon-14 concentration measurements using accelerator mass spectrometry

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Table 3 Bio-based carbon content of polyethylene resins and recovered precipitates measured by AMS

Entry	Sample (w/w)	Measured (%)	Calculated for entire composite (%)^b
1	bHDPE	97.7 ± 0.3, 96^a
2	bHDPE/Graphite (75/25)	97.7 ± 0.2	70.3
3	bHDPE/CaCO₃ (75/25)	98.1 ± 0.2	93.3
4	bHDPE/DBDPE (75/25)	100.2 ± 0.3	92.3
5	bLLDPE	88.4 ± 0.3, 87^a
6	bLLDPE/Graphite (75/25)	87.4 ± 0.3	63.6
7	bLLDPE/CaCO₃ (75/25)	88.1 ± 0.2	84.5
8	bLLDPE/DBDPE (75/25)	89.0 ± 0.3	83.5

^aBio-based carbon content listed by the supplier.
^bBio-based carbon content calculated for composites based on mixing ratios of resins to fillers (additives).