Silver polyester-sulfonated nanoparticle composite wire and its preparation method
A silver nanoparticle and composite silk technology, which is applied in the field of metal nanoparticle composites, can solve the problems of surface and crack sterilization.
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[0032] Examples of diacids or diesters selected for the preparation of amorphous polyesters include dicarboxylic acids or diesters selected from the group consisting of terephthalic acid, phthalic acid, isophthalic acid, fumaric acid, maleic acid, acid, itaconic acid, succinic acid, succinic anhydride, dodecylsuccinic acid, dodecylsuccinic anhydride, glutaric acid, glutaric anhydride, adipic acid, pimelic acid, suberic acid, azelaic acid, Dodecanedioic Acid, Dimethyl Terephthalate, Diethyl Terephthalate, Dimethyl Isophthalate, Diethyl Isophthalate, Dimethyl Phthalate, Phthalate Acid anhydride, diethyl phthalate, dimethyl succinate, dimethyl fumarate, dimethyl maleate, dimethyl glutarate, dimethyl adipate, dodecyl succinate Dimethyl esters and their mixtures. The organic diacid or diester is selected, for example, from about 45 to about 52 mole percent of the resin. Examples of diols used to form amorphous polyesters include 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, 1...
Embodiment 1
[0066] This example describes the preparation of a branched sodium sulfonated amorphous polyester (BSPE) according to an embodiment of the disclosure.
[0067] A branched amorphous sulfonated polyester resin was prepared from 0.425 molar equivalents of terephthalate, 0.080 molar equivalents of sodium 5-sulfoisophthalate, 0.4501 molar equivalents of 1,2-propanediol and 0.050 molar equivalents of diethylene glycol. Into a one liter Parr reactor equipped with a heated bottom bleed valve, high viscosity twin turbine agitator and distillation receiver with cold water condenser was charged 388 grams of dimethyl terephthalate, 104.6 grams of 5-sulfo Sodium isophthalate, 322.6 g 1,2-propanediol (1 molar excess of diol), 48.98 g of diethylene glycol (1 molar excess of diol), trimethylolpropane (5 g), and 0.8 g of of butyltin oxide hydroxide. The reactor was heated to 165°C, stirred for 3 hours, then reheated to 190°C over one hour, after which the pressure was slowly reduced from atm...
Embodiment 2
[0069] This example shows the preparation of a branched sodium sulfonated amorphous polyester-silver nanoparticle (BSPE-AgNP) composite using trisodium citrate as a reducing agent.
[0070] Reactions were performed in a 3-necked 500 mL round bottom flask equipped with overhead stirrer, reflux condenser, thermocouple, hot plate and nitrogen inlet (condenser served as nitrogen outlet). Approximately 320 mL of DIW was added to the flask at room temperature (22°C). Set the heat on to 90°C and pass nitrogen through the system (RPM = 250). After the temperature stabilized, 100.0 g of solid BSPE (RPM=300) in a finely ground state was added to the system. The solution became cloudy and had a blue tinge. After 1.5 h, 1.00 g of AgNO dissolved in 6.0 mL of DIW was added dropwise to the solution at a rate of approximately 1 drop / s 3 (RPM = 387). The solution became slightly dark (brown). After 10 minutes, 52.5 mL of 1% (w / w %) trisodium citrate solution (reducing agent) was added dro...
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