| Our country is the largest producer of textile, textile industry plays an important role in national economy. In recent years, with the development of textile industry as well as people’s living standard rising ceaselessly, function textile has become an important direction of this industry. People has paid more attention to function textiles, such as antibacterial, anti-pollution, flame retardant, divide peculiar smell, anti-electrostatic and anti-far-infrared function textiles. And textile finishing agent is the key to develop those functional textiles. This paper focus on textiles in waterproof, oilproof, antibacterial application, and develop antibacterial water and oil repellent multifuctional finishing agent. The main research contents are as follows:(1) Preparation of fluoride acrylic acid emulsionThe fluoride acrylic acid emulsion was synthetized by no soap emulsion polymerization and used as waterproof and oilproof finishing agent. TEM, SEM, FTIR and Particle Size Analyzer were adopted to analyze the structure and morphology of fluoride acrylic acid emulsion. The influence of fluoride monomer and cross-linking monomer dosage on water and oil-repellent and washable properties were discussed. The water and oil-repellent ability, as well as whiteness, gas permeability, crease recovery angle and tensile strength of the fabric before and after finishing were also investigated. The results show that the water and oil-repellent ability enhances with the increase of fluorine monomer dosage, and increasing of cross-linking monomer can help to improve the washable properties of the fabric. When the contents of fluorine monomer and cross-linking monomer are 10% and 6% respectively, the water repellency of finished fabric is 100 points, the H2O contact angle can reach 160°and the properties of oil-repellent can reach at seven level., the fabric still maintains relatively high water and oil-repellent and washable properties after washing for 20 times.(2) Preparation of chitosan-Ag+ antibacterial agentChitosan-Ag+ antibacterial sol was prepared by sol-gel method and used as antibacterial agent. FTIR and SEM were adopted to analyze the structure and morphology of antibacterial sol. We discussed the dissolution of the chitosan in glacial acetic acid and the stable performance of sol influenced by the mass ratio of chitosan to Ag+. And the whiteness, crease recovery angle, gas permeability and tensile strength of the fabric before and after finishing were also investigated. The results show that the stable chitosan-Ag+ antibacterial composite sol can be obtained when the mass ratio of chitosan to Ag+ is 1000:1 and the pH value is kept at 5. The cotton fabric antibacterial capacity is 98.5% after finishing and can maintains relatively high antibacterial capacity after washing for 20 times.(3) Preparation of antibacterial water and oil repellent multifunctional finishing agentBlend chitosan-Ag+ antibacterial composite sol with fluoride acrylic acid emulsion at certain proportion, and obtained finishing agent. The cotton fabric was finished by the agent. We discussed antibacterial properties, water-repellent ability and oil-repellent ability of fabric influenced by volume ratio of antibacterial composite sol to fluorine acrylate latex. The properties of the treated cotton fabric were also studied. The results show that when the volume ratio of fluorine acrylic acid emulsion to antibacterial sol is 2:1, the cotton fabric antibacterial capacity exceed 96%, while the H2O contact angle and the properties of oil-repellent can reach 150°and six level respectively. The finishing agent has little influence on the properties of cotton fabric itself. Compared with original cotton fabric, the white degree and gas permeability of finished cotton fabric are declined, while the breaking strength and crease recovery angle are slightly increased. |
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