Table 1 Degradation of polyester and cotton [a]

From: Internal water circulation mediated synergistic co-hydrolysis of PET/cotton textile blends in gamma-valerolactone

Entry

Substrate

Solvent

Yield (%)

TPA [c]

HMF [d]

1

polyester

GVL

96.3 ± 1.6

/

2

polyester

H2O

<1

/

3

cotton

GVL

/

19.7 ± 1.1

4

cotton

H2O

/

4.34 ± 1.1

5

polyester/cotton

GVL

95.8 ± 1.9

24.1 ± 1.0

6

polyester/cotton

H2O

<1

4.73 ± 0.9

7

polyester/cotton

GVL/ H2O [b]

28.3 ± 1.4

7.38 ± 1.3

  1. Polyester and cotton were cut from textiles; [a] Reaction under 170 °C for 60 min with 7.5 wt% TsOH, the solvent is 20 mL. Unless otherwise specified, the polyester/cotton blends utilized in this work is 1 g (with a polyester to cotton mass ratio of 8:2). In experiments involving the individual use of cotton or polyester, the masses of polyester and cotton are 0.8 g and 0.2 g, respectively. [b] The volume ratio of GVL to H2O is 5:5; [c] Yield determined by weight; [d] Yield determined by NMR and HPLC.
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