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Chitosan is a chitin part deacetylated product of chitin widespread low crab, shrimp and other animals, as well as algae, fungi and lower plants. Its content is extremely rich in the natural world annual production of up to 10 tons, is the second largest after cellulose polysaccharides. Chitosan because of its unique chemical and biological properties of its product development has caused more and more national attention and research institutions. The first part of this study hydroxypropyl trimethyl ammonium chloride chitosan (CTS-ETA) Synthesis and structural characterization. Chitosan as a raw material, under a neutral condition with the etherifying agent in an amount of 2,3 - epoxypropyl trimethyl ammonium chloride (ETA) etherification reaction for the preparation of quaternary ammonium salt of chitosan, the mass fraction of the reaction time, the etherification agent, the pH of the system influencing factors were analyzed, the optimized synthesis process; chitosan synthesis structural characterization by infrared spectroscopy. The second part of this article will be the first part of the synthesis of CTS-ETA with acrylamide monomer to graft copolymerization, CTS-ETA-g-AM graft copolymer was synthesized. Under a nitrogen atmosphere, using ceric ammonium nitrate as initiator, and the results show that when the reaction temperature is 35 ° C, the reaction time of 4h of graft copolymer reaction product grafting rate of 29.5%, viscosity is greater than 57mpa s. And structural characterization by infrared and XRD. The third part of this study made Cationic Chitosan enhanced the paper, anti-aging and anti-bacterial effect. CTS-ETA on the pattern using different degrees of substitution and concentration were added to the pulp and the spray treatment, tested for its physical properties. The results show that: the pulp, as long as the addition of 0.2% odp. Cationic Chitosan with a degree of substitution of 1.015, paper tensile index, folding endurance, tear index, burst strength increased by 15.7%, 54%, 12.8%, and 16.6%, respectively; degree of substitution of 1.015, a concentration of 0.2 % solution spray processing, paper tensile index increased by 18.5%, the folding endurance increased by 29.7%, tear index increased by 15.5%, 18.8% increase in burst strength; treated to improve the paper resistance to aging, but its whiteness and gloss. CTS-ETA pattern is added to the pulp and surface spray treatment, to test its anti-bacterial properties. The results show that: with a degree of substitution of 1.015, pulp, add 0.25% of the CTS-ETA Gram-positive bacteria (Staphylococcus aureus) and Gram-negative bacteria (E. coli) the antibacterial rate can reach 73.2% and 63.5%; degree of substitution of 1.015, a concentration of 0.25%, the CTS-ETA solution sprayed paper, Staphylococcus aureus and Escherichia coli the antibacterial rate can reach 100% and 92.6%. Confirmed that the CTS-ETA has good antibacterial properties. The end part of the CTS-ETA-g-AM synthetic graft copolymer used in papermaking enhancement experiments, experiments show that: 0.3% pulp can be greatly improved physical strength of the paper, can make the tensile , tearing, bursting, folding increased by 18.1%, 6.9%, 17.1%, 56%. CTS-ETA-g-AM good antibacterial effect on Escherichia coli and Staphylococcus aureus, with a viscosity of 57mpa · s products as long as the pulp 0.2%, the the antimicrobial rate of E. coli and Staphylococcus aureus can 34.5%, 68.8%.
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