研究目的
Investigating the synthesis and properties of a water-soluble ?uorescent copolymer for detecting polymer concentration in real time.
研究成果
The study successfully synthesized a water-soluble ?uorescent copolymer PAAS with excellent ?uorescent properties and stability across a wide range of conditions. The linear relationship between fluorescence intensity and copolymer concentration suggests its potential as an effective tracing agent for polymer concentration detection in various environments.
研究不足
The study focuses on the synthesis and characterization of PAAS and its potential application as a tracing agent. The limitations include the need for further testing in real-world applications and the potential impact of environmental factors not covered in the study.
1：Experimental Design and Method Selection:
The copolymer PAAS was synthesized via micellar free-radical polymerization using acrylamide, acrylic acid, and styryl-pyridinium salt derivative (SP-4). The polymerization conditions were optimized by single factor experiment.
2：4). The polymerization conditions were optimized by single factor experiment. Sample Selection and Data Sources:
2. Sample Selection and Data Sources: The materials used include acrylamide, acrylic acid, styryl-pyridinium salt derivatives (SP-n), and other analytical reagents.
3：List of Experimental Equipment and Materials:
Instruments used include a WQF520 FTIR spectrophotometer, Bruker AV III-400 NMR spectrometer, DSC823 TGA/SDTA851e thermal gravimetric analyzer, Ubbelohde capillary viscometer, UV-1800 spectrophotometer, and PerkinElmer LS55 Fluorescence spectrometer.
4：Experimental Procedures and Operational Workflow:
The synthesis involved dissolving AM, AA, and SDS in distilled water, adjusting pH, adding SP-4, and initiating polymerization with NaHSO3-(NH4)2S2O
5：The product was characterized by various spectroscopic and thermal analysis methods. Data Analysis Methods:
The data were analyzed to determine the relationship between fluorescence intensity and copolymer concentration, and the effects of various conditions on fluorescence stability.
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Bruker AV III-400 NMR spectrometer
AV III-400
Bruker
Used for 1H nuclear magnetic resonance spectra measurements.
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UV-1800 spectrophotometer
UV-1800
Shimadzu
Used for ultraviolet–visible spectroscopy.
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PerkinElmer LS55 Fluorescence spectrometer
LS55
PerkinElmer
Used for fluorescence spectra measurements.
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WQF520 FTIR spectrophotometer
WQF520
Beijing Rayleigh Analytical Instrument
Used for Fourier transform infrared spectroscopy measurements.
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DSC823 TGA/SDTA851e thermal gravimetric analyzer
DSC823 TGA/SDTA851e
METTLER TOLEDO
Used for thermal stability testing.
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Ubbelohde capillary viscometer
Used to measure the intrinsic viscosity of copolymers.
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Horiba Jobin Yvon-Edison FluoroLog-3 fluorescence spectrometer
FluoroLog-3
Horiba Jobin Yvon-Edison
Used to determine absolute fluorescence quantum yields of solid state.
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Brook?eld DV-III + Pro viscometer
DV-III + Pro
Brook?eld
Used to measure the apparent viscosity of polymer solutions.
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HAAKE MARS III rheometer
MARS III
HAAKE
Used to research the viscoelasticity properties of the copolymers.
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