# Bio-based dry-strength agents for paper

Biopolymers & materials — Bio-based dry-strength additives — cationic and thermally modified starch, cellulose polymers and refining enzymes — restore inter-fibre bond strength in paper and board made with a high recycled-fibre content, displacing synthetic polyacrylamide chemistry.

Source: https://en.bioecon.ru/market/biopolymers-materials/paper-bio-dry-strength-agents/