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. 2016 Jun 14;9(6):473. doi: 10.3390/ma9060473

Table 8.

Stress at yield, tensile strength, and elongation at break of PET film and the same film after the deposition of whey-based coating and successive removal (washing) of it by Terg-a-zyme treatment.

Sample Stress at Yield (MPa) Tensile Strength (MPa) Elongation at Break (%)
PET 98 ± 2 170 ± 20 26 ± 6
PET after washing 98 ± 5 150 ± 20 19 ± 5
PE 12 ± 0.3 27 ± 2 150 ± 12
PE after washing 11 ± 0.1 22 ± 1 280 ± 18