Degradable hydrophilic polyester fiber and preparation method thereof
A polyester fiber and hydrophilic technology, applied in the direction of single-component copolyester rayon, etc., can solve the problem that the hydrophilic polyester fiber does not have biodegradable function, achieve good hydrophilic performance, uniform dispersion, The effect of increasing hydrophilicity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0021] Weigh 1 mol of PTA, 1.18 mol of EG, 0.0005 mol of antimony trioxide, and 0.0005 mol of triphenyl phosphate, and place them in a reaction kettle. Esterification: Dry the lactic acid at 60°C and a vacuum of 10Pa, then put 1 mol of LA and 0.001 mol of stannous chloride into another reactor to polymerize, control the polymerization temperature to 130°C, and polymerize The time is 0.5 hours, and then 0.001mol of PEG with a polymerization degree of 100 is put into the end-capping polymerization to obtain a PEG-terminated polylactic acid oligomer, and the block mode of polyethylene glycol and acetic acid molecules is a random block; The polyester prepolymer prepared above and the PEG-terminated PLA oligomer were polycondensed, and the mixed polycondensation was carried out according to the mass ratio of 0.95:0.05. The polycondensation temperature was 230 ° C, and the polycondensation time was 10 hours. The degradable hydrophilic Polyester, degradable hydrophilic polyester with...
Embodiment 2
[0023] Weigh 1 mol of PTA, 1.3 mol of propylene glycol, 0.001 mol of tetraisobutyl titanate, and 0.001 mol of triphenyl phosphite, and place them in a reaction kettle. Esterification during this period of time; dry the lactic acid at 110°C and a vacuum of 350Pa, then put dry 1mol LA and 0.005mol stannous chloride into another reaction kettle for polymerization, and control the polymerization temperature to 110 ℃, the polymerization time is 1 hour, and then 0.005 mol of PEG with a polymerization degree of 200 is put into end-capping polymerization to obtain a PEG-capped polylactic acid oligomer, and the block mode of polyethylene glycol and acetic acid molecules is a random block Then polycondensate the polyester prepolymer prepared above and the PEG-terminated PLA oligomer, and carry out mixed polycondensation according to the mass ratio of 0.9:0.1, the polycondensation temperature is 240 ° C, and the polycondensation time is 8 hours, which can be prepared Degradation of hydro...
Embodiment 3
[0025] Weigh 1 mol of PTA, 1.4 mol of butanediol, 0.005 mol of antimony triacetate and 0.005 mol of diphenyl phosphate, and place them in the reaction kettle, control the pressure in the kettle to 0.4MPa, and keep the temperature at 255°C. Esterification over time; dry lactic acid at 80°C and a vacuum of 150Pa, then put dried 1mol LA and 0.01mol stannous chloride into another reaction kettle for polymerization, and control the polymerization temperature to 150°C. The polymerization time is 2 hours, and then 0.05 mol of PEG with a polymerization degree of 900 is put in for end-capping polymerization to obtain a PEG-capped polylactic acid oligomer, and the block mode of polyethylene glycol and acetic acid molecules is a random block; The polyester prepolymer prepared above and the PEG-terminated PLA oligomer were polycondensed, and the mixed polycondensation was carried out according to the mass ratio of 0.7:0.3. The polycondensation temperature was 260 ° C, and the polycondensat...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More