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Table 1 Reaction conditions, mass-average (Mw) and number-average (Mn) molecular weights of products, and the content of PEG

From: Epoxidation and etherification of alkaline lignin to prepare water-soluble derivatives and its performance in improvement of enzymatic hydrolysis efficiency

Samplea

Reaction conditions

Molecular weightb

Content of PEG (%)

Temperature (°C)

Catalyst (g)

Mn (g/mol)

Mw (g/mol)

Mw/Mn

LP6000.8

130

0.8

770 ± 7

900 ± 7

1.16

63.0

LP6001.0

130

1.0

800 ± 14

930 ± 20

1.15

65.0

LP6001.2

130

1.2

780 ± 14

900 ± 7

1.14

67.0

LP1000130

130

1.2

890 ± 14

1290 ± 28

1.43

68.0

LP1000140

140

1.2

770 ± 7

890 ± 14

1.16

70.0

  1. aLP6000.8, LP6001.0, and LP6001.2 represent the products obtained from the reaction between LERM and PEG600 at 130 °C using 0.8, 1.0, and 1.2 g catalyst, respectively; LP1000130 and LP1000140 represent the products obtained from the reaction between LERM and PEG1000 at 130 and 140 °C using 1.2 g catalyst, respectively
  2. bData represented are mean values and standard deviations of the results obtained from the duplicated determination