Figures (3)  Tables (3)

    • Figure 1. 

      (a) CG fruit. (b) CG seeds and fibers. (c) SEM image of the cross-section of the CGF. (d) SEM image of the longitudinal direction of the CGF.

    • Figure 2. 

      (a) The CGF microwave-opening equipment. (b) The CGF extracted from microwave-opening.

    • Figure 3. 

      Illustration of the graphene-modified fabric fabrication process[9].

    • FormationCGFKapok fiberCotton fiberLinen fiber
      Cellulose (%)6635−509473−77
      Hemicellulose (%)2122−4507−9
      Lignin (%)8−91302−6
      Pectin (%)3< 11.25.2
      Wax (%)1.8−30.80.8−1.31.4
      Ash (%)1.71.61.270.22

      Table 1. 

      Comparison of the main chemical components between the CGF and several cellulose fibers.

    • FormationCGFKapok fiberHemp fiberCotton fiber
      Breaking strength (cN/dtex)4.731.292.7−6.98.37
      Elongation at break (%)3.403.061.69.00
      Length (mm)23−338−328.3−1434
      Linear density (dtex)0.93−0.970.9−1.21.8−3.71.43−2.22
      Rate of moisture regain (%)11.909.3314.947.00
      Rate of moisture absorption (%)10.808.69126.71

      Table 2. 

      Comparison of the physical properties of the CGF, kapok, and cotton fiber.

    • Adsorbent materialProcessingOil absorption
      amount (g/g)      		OilRef.
      Kapok fiberPacked36
      43
      45      		Diesel
      Hydraulic oil
      Motor oil      		[36]
      Calotropis
      gigantea
      fiber      		In natura
      NaClO2 + Carbonized      		60.59
      84.71      		Kerosene[38]
      Cotton fiberLoose fiber
      Fiber pad shape      		22.5
      18.43      		Lubricating oil[41]
      Cellulose aerogelMethyltrimethoxysilane40−95Oil[41]

      Table 3. 

      Oil absorption of different materials with different treatments.