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Table 4 Mechanical properties of hemp fibres after different treatments

From: Comparison of traditional field retting and Phlebia radiata Cel 26 retting of hemp fibres for fibre-reinforced composites

Treatment Period Stiffness (GPa) UTS (MPa) Strain (%)
Untreated 0 29 (3)cd 772 (104)ab 5.0 (0.9)a
HTTA 30 min 31 (6)cd 688 (120)bc 2.9 (0.7)de
HTT 60 min 32 (5)bc 785 (180)ab 2.8 (0.7)de
Field retting 7 days 33 (5)bc 832 (198)a 4.7 (1.8)a
14 days 31 (5)cd 697 (104)bc 4.5 (1.5)ab
20 days 28 (5)cd 683 (107)bc 4.5 (1.2)ab
Fungal retting 7 days 27 (5)d 707 (130)a 3.6 (0.9)bcd
14 days 42 (5)a 720 (150)abc 2.3 (0.5)e
20 days 31 (7)cd 714 (145)bc 3.1 (0.8)cde
PectinaseA 90 min 18 (4)e 636 (61)c 3.8 (0.9)bc
HTT + pectinaseA 90 min 36 (5)b 777 (117)ab 2.6 (0.9)e
  1. Values are shown as mean (standard error). In each column, values that do not share a letter are significantly different at the 5% level
  2. AWith or without autoclave treatment (HTT) at 1 bar (121 °C) for 30 min before the pectinase treatment (Liu et al. 2016b)