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Preparation, Optical, and Heat Resistance Properties of Phenyl-Modified Silicone Gel.
Polymers (Basel)
December 2024
Key Laboratory of Organosilicon Chemistry and Material Technology, College of Material, Chemistry and Chemical Engineering, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China.
A series of Si-H- or Si-Vi-terminated, branched and linear oligomers containing MeSiO segments were prepared by equilibrium polymerization or non-equilibrium polymerization initiated by living anions, respectively. These oligomers were used to improve the defects of concentrated crosslinking points and the high hardness of crosslinked products when using phenyltris(dimethylsiloxy)silane or 1,1,5,5-tetramethyl-3,3-diphenyl trisiloxane as crosslinking agents in the preparation of silicone gel. NMR, FT-IR, and GPC characterized the structure and molecular weight information of the prepared oligomers.
View Article and Find Full Text PDFFabrication of Polyurethane-Polyacrylate Hybrid Latexes with High Organosilicon Content via Phase Inversion Emulsion Polymerization.
Molecules
December 2024
Key Laboratory of Advanced Materials of Ministry of Education of China, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
Waterborne polyurethane, with a mechanical strength comparable to solvent-based types, is eco-friendly and safe, using water as a dispersion medium. Polyacrylate excels in film formation and weather resistance but suffers from "hot stickiness and cold brittleness". Merging polyurethane and polyacrylate creates advanced hybrids, while organosilicon enhances properties but is restricted due to hydrolytic crosslinking.
View Article and Find Full Text PDFFrom heel protection to heel burns: Thermal injuries caused by heated silicone gel pads in surgery.
J Anaesthesiol Clin Pharmacol
July 2024
Department of Anesthesia, ILBS, New Delhi, India.
Systemic siliconomas following breast implant rupture.
BMJ Case Rep
January 2025
General Surgery, Universidade de Lisboa Faculdade de Medicina, Lisboa, Portugal.
We report a case of a woman in her late 40s with a history of breast implant surgery following breast cancer treatment. She presented with asymmetrical breast enlargement, palpable contralateral axillary lymph nodes and cutaneous nodules on both forearms. In addition, imaging evaluation revealed intracapsular implant rupture, ipsilateral internal mammary enlarged lymph nodes and multiple mediastinal lymphadenopathies.
View Article and Find Full Text PDFComposite Contrast Enhancement of Hydrogel-Based Implants for Photon-Counting Computed Tomography Studies.
Gels
December 2024
Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Russia.
Hydrogels have a wide range of medical applications, including use within implantable systems. However, when used in implants, their visibility under conventional medical imaging techniques is limited, creating safety risks for patients. In the current work, we assessed the possibility of enhancing hydrogels using Ln-based contrasting agents to facilitate their visualization in photon-counting computed tomography (PCCT).
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