TECHNOLOGY FOCUS - POLYMERS - Preferred Method: The method comprises cleaning and sieving wood cellulose fiber into 60-70 meshes, adding 300 ml of toluene and ethanol mixed liquid in a volume ratio of 2:1, adding into a soxhlet extractor, extracting at 90 degrees C for 7-24 hours to remove ash, adding dried wood powder and 150 ml of distilled water into 250 ml of beaker, adding 1.5 g of glacial acetic acid and sodium chlorite, uniformly stirring using a glass rod, adding a plastic wrap, sealing a cup opening, reacting at 75 degrees C in water bath, continuously stirring, adding 1 ml of acetic acid and 1.5 g of sodium chlorite, heating at 75 degrees C in a water bath, filtering to remove acid-soluble lignin to obtain brown cellulose fiber, adding brown cellulose fiber into a 250 ml beaker, adding 150 ml of 4% of potassium hydroxide solution in the plastic wrap, reacting at 90 degrees C for 2 hours, continuously stirring, vacuum filtering using Buchner funnel, washing with distilled water to remove brown hemicellulose until the filter liquid is neutral, adding the sample into a 250 ml of beaker, adding 150 ml of antisteaming water, reacting at 90 degrees C in water bath for 2 hours, continuously stirring, filtering and washing with distilled water until the pH value is 7 to obtain semi-finished product, adding into 250 ml of beaker, adding 1% of hydrochloric acid, reacting at 80 degrees C in water bath for 2 hours, stirring, and filtering by vacuum pump and a Buchner funnel. The method comprises adding 0.3 g of cellulose nano fiber film in a culture dish, adding ABPE10, adding cellulose resin film into a vacuum drying box, culturing at 20 degrees C under a pressure of 0.09 MPa, soaking for 24 hours, and curing using light-curing machine for 30 seconds under a power of 1000 W. Preferred Components: The cellulose nano fiber film has a diameter of 90 mm. The drying step is done at 55 degrees C for 48 hours by two pieces of a glass flat plate. The wood cellulose is cotton, absorbent cotton, cotton linter, wood powder or filter paper.