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Polyaniline−dodecylbenzene sulfonic acid (PANI‐DBSA) particles were synthesized through in situ lotion polymerization of aniline and DBSA as raw materials, followed by combining with epoxy resin (E‐44) and castor oil (CO) to prepare a PANI mixture (PANI‐DBSA/CO) which was used as a nanofiller to create a nano polyaniline/polyurethane (PANI‐PU) interpenetrating polymer network (IPN) coating. SEM, XRD and Fourier transform infrared spectroscopy were used to characterize the PANI‐DBSA and PANI‐PU IPN composite coatings that were produced. The coatings' physical and mechanical characteristics were investigated, as well as the system's corrosion behaviour in 3.5 wt% NaCl solution, utilizing electrochemical impedance spectroscopy and electrokinetic polarization. Acid, alkali and saltwater immersion investigations were used to further evaluate the coatings' medium resistance. The results show that when PANI‐DBSA is added at 1 wt%, the contact angle reaches 102.6°, the adhesion reaches S1 grade after 720 h immersion, the tensile strength is 16.22 MPa and the elongation reaches 208%. The impedance value of the composite coating grew by 569 times with the addition of 1 wt% PANI, and the resistance duration to 10 wt% H2SO4, 10 wt% NaOH and 3.5 wt% NaCl reached more than 90 days. The addition of PANI to IPN coatings can increase corrosion resistance and extend their application range. © 2023 Society of Industrial Chemistry. [ABSTRACT FROM AUTHOR]

Polyaniline (PANI) particles were synthesized using aniline (AN), dodecyl benzene sulfonic acid (DBSA), and ammonium persulfate (APS). The particles were analyzed using scanning electron microscope (SEM), X‐ray diffraction (XRD), and fourier transform infrared spectroscopy (FTIR). A PANI/waterborne polyurethane composite material (PANI‐WPU) was obtained by combining it with polyethylene glycol (PEG600), diphenylmethane diisocyanate (MDI), dimethylol propionic acid (DMPA), N‐methyl pyrrolidone (NMP), and dibutyltin lauric acid (DBTDL). The structure was characterized by the FTIR spectrum. The mechanical characteristics of the coating film were evaluated with respect to the PANI content, as well as its water absorption, glossiness, electrochemical corrosion resistance, and acid and alkali resistance. The PANI/waterborne polyurethane film has a maximum tensile strength of 23 ±1$$ \pm 1 $$ MPa, an elongation of 1012%, a pencil hardness of 5H, a flexibility of 2 mm, an impact resistance of 50 cm, the water absorption of 14.66%, and the glossiness of 99.9 ±0.1$$ \pm 0.1 $$ at 60°. When the PANI content is 0.7%, the mechanical characteristics, glossiness, and anti‐corrosion performance of the composite film improve. The corrosion inhibition efficiency of the aqueous polyurethane coating film with PANI can reach 99.74%, as shown by the examination of electrochemical polarization curves and impedance spectra. The tinplate is coated with a 0.7% PANI‐WPU composite material and edge sealing. This coating provides excellent protection against acid and alkali resistance, as demonstrated by its ability to withstand immersion in 10% H2SO4 and 10% NaOH solution for 90 days without any paint peeling off. [ABSTRACT FROM AUTHOR]

Intrauterine adhesion (IUA) is primarily caused by endometrial injury, and hysteroscopic adhesiolysis is presently the main treatment. However, postoperative recurrence and poor pregnancy outcomes remain intractable. In this study, we aim to assess the effects of different treatments on clinical symptoms and reproductive outcomes in IUA. This retrospective study was conducted in a tertiary university-affiliated women's hospital. The study included 1449 consecutive women who desired to have a baby and were diagnosed with IUA through hysteroscopy from January 2016 to December 2021. Patients with IUA underwent hysteroscopic electric resection (E) or cold scissors separation (C), as well as hormone therapy and one or both of the following secondary prevention measures: intrauterine devices (IUD) and hyaluronic acid gel (HA). The pregnancy rate (PR) was significantly higher in the E + IUD + HA (90.23% CI: 85.82, 94.64%) than in other groups (p = 0.000) groups. The rates of full-term birth (p = 0.000) and live birth (p = 0.000) were significantly higher in the E + IUD + HA (67.82% and 68.97%, respectively) and E + HA (62.41% and 63.91%, respectively) groups. Multivariate logistic regression analysis revealed a significantly higher PR in women who received second-look hysteroscopy (OR 1.571, 95% CI: 1.009–2.224, p = 0.013) and E + IUD + HA (OR 4.772, 95% CI: 2.534–8.987, p = 0.000). Combining hysteroscopic electric resection with IUDs and HA gel could prevent adhesion recurrence and improve postoperative pregnancy and live birth outcomes in IUA. Furthermore, postoperative second-look hysteroscopy may increase the PR and shorten the waiting period. [ABSTRACT FROM AUTHOR]

Jarosite has high specific surface area and strong adsorption capacity, researchers usually use some methods to prepare jarosite and use it as an adsorption material, mainly used in a large number of mines and other industrial wastewater treatment and other fields. The results show that it has strong ad-sorption and coprecipitation for heavy metals such as Cr, Cd, Hg, Pb, As, etc., therefore, the formation mechanism of jarosite and the study of jarosite as adsorbent are reviewed, in order to provide some ideas for more scholars to study jarosite, and then make the best use of its adsorption performance, it also provides a theoretical basis for the treatment of heavy metal pollution in mining areas and industrial wastewater. [ABSTRACT FROM AUTHOR]