Effects of Monomer Compatibility on Sizing Performance of Chitosan- g -P(MA- co -AM)

To impart good application performance to chitosan (CS) sizes for high polyester content warp yarns, methyl acrylate (MA) and acrylamide (AM) monomers, with a variation in feed molar ratio from 1:9 to 4:6, were grafted onto the molecular chains of native CS to obtain CS- g-P(MA- co-AM) products, with similar grafting ratios through a K ₂ S ₂ O ₈ -NaHSO ₃ redox system. Effects of monomer compatibility of MA and AM on sizing performance of the CS- g-P(MA- co-AM) for high polyester content warp were studied. Grafting MA and AM with rational compatibility onto the molecular chains of CS is an effective method to improve the application performance of CS sizes. In view of the overall performance of the CS- g-P(MA- co-AM) sizes, the appropriate feed molar ratio of MA/AM should be 3:7.