increased from 34.16 to 35.32%, N content increased from 0.13 to 0.33%, and H content increased from 4.859 to 5.126%. This was because that C content in MB (45.91%) was approximately 10% higher than in PAA, and the polysaccharide molecules with relatively high carbon contents in MB reacted with the monomer molecules and changed the polymer chains. Meanwhile, part of the nitrogen-containing compound such as protein in MB was added to polymer chains; thus, for the above reasons, the contents of C, N, and H are increased.Morphology. The SEM images revealed the morphology of the employed MB, PAA, and MB−PAA (Figure 2a−c).