Modifications Caused by Enzyme-Retting and Their Effect on Composite Performance

Table 5

Notched and unnotched impact strengths of enzyme-retted flax fiber composites*.

Sample	Volume fraction	Notched impact specific strength	Modified Unnotched specific impact strength
(h)	(Impact %)	(kJ/m^2*cm^3/g)	(kJ/m^2*cm^3/g)
0	21	9.9 a	8.8 a, b
10	20	9.2 a, b	9.7 a, b
22	22	8.0 b	8.3 b
46	19	9.7 a	10.1 a
Neat Resin	N.A.	1.0 c	4.0 c

*Values followed by different letters within columns are significantly different at 𝑃≤0.05.