Preparation method of controlled-degradation high-hygroscopicity resin
A super absorbent resin and monomer technology, applied in the field of functional polymer materials to achieve the effect of recycling
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Embodiment 1
[0027] First, α-cyclodextrin (4.86g) and p-hydroxyazobenzene (1g) were reacted with acryloyl chloride to prepare α-cyclodextrin and azobenzene with double bonds, and then the two were added to 10mL In the N, N-dimethylformamide (DMF), stirring at a constant speed for 1 hour, the host-guest clathrate monomer was obtained. The monomer does not need to be separated from the dispersion, and can be directly added to the system for reaction.
[0028] Acrylic acid (21.6 g) was dissolved in 100 mL of DMF, and 10 mL of 70% NaOH solution was added dropwise at low temperature. After warming up to room temperature, add acrylamide (7.1 g), host-guest monomer dispersion liquid, stir well, then add 0.1 g of azobisisobutyronitrile (AIBN), and polymerize at 50°C for 4 hours. Remove the solvent, dry at 120°C for 3 hours, and pulverize to obtain a controllable-degradable superabsorbent resin.
[0029] The resin can be rapidly degraded under ultraviolet light irradiation, and the degraded resin...
Embodiment 2
[0031] First, β-cyclodextrin (5.67g) and ferrocenecarbonyl chloride (1.25g) were reacted with acryloyl chloride and allyl alcohol to prepare β-cyclodextrin with double bond and ferrocene with double bond, and then the two The latter was added into 10 mL of N,N-dimethylformamide (DMF), and stirred at a constant speed for 1 hour to obtain a host-guest inclusion compound monomer. The monomer does not need to be separated from the dispersion, and can be directly added to the system for reaction.
[0032] Acrylic acid (21.6 g) was dissolved in 100 mL of DMF, and 10 mL of 70% NaOH solution was added dropwise at low temperature. After warming up to room temperature, add acrylamide (7.1g), host-guest monomer dispersion and N,N-methylenebisacrylamide (1.5g), stir evenly, then add azobisisobutyronitrile (AIBN) 0.1 g, polymerized at 50°C for 4 hours. Remove the solvent, dry at 120°C for 3 hours, and pulverize to obtain a controllable-degradable superabsorbent resin.
[0033] The resin...
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