File:02. Синтеза на фенол-формалдехидна смолa.ogg
Original file (Ogg multiplexed audio/video file, Theora/Vorbis, length 2 min 27 s, 1,920 × 1,080 pixels, 5.12 Mbps overall, file size: 89.62 MB)
Summary
| Description |
English: Synthesis of phenol-formaldehyde resin
1.2 g of phenol, 3.5 ml of acetic acid and 1.5 ml of a 37-40% aqueous solution of formaldehyde are placed in a test tube. The tube is gently heated to melt the phenol and obtain a homogeneous solution. Then, the test tube is cooled in an ice bath, and 3.5 mL of HCl is added to the tube in a digester. The solution is gently stirred until a solid polymer begins to form and set aside to complete polymerization. The tube is cooled, and the polymer is removed. Demonstrated by MSc Iva Dimitrievska. Planned and prepared by Prof. PhD Jadranka Blaževska-Gilev, Institute of Organic Technology, Faculty of Technology and Metallurgy, SCMU, Skopje, Macedonia.Македонски: Синтеза на фенол-формалдехидна смолa
Во епрувета се ставаат 1,2 g фенол, 3,5 ml оцетна киселина и 1,5 mL 37-40%-ен воден раствор на формалдехид. Епруветата благо се загрева за да се стопи фенолот и да се добие хомоген раствор. Во ледена бања се лади епруветата, во дигестор, во епруветата се ставаат 3,5 mL HCl. Благо се промешува сѐ додека не почне да се образува цврст полимер, а потоа се остава на страна за да заврши полимеризацијата. Епруветата се лади и се вади полимерот. Изведено од м-р Ива Димитриевска. Планирано и подготвено од проф. д-р Јадранка Блажевска-Гилев, Институт за органска технологија, Технолошко-металуршки факултет, УКИМ, Скопје, Македонија. |
| Date | |
| Source | Own work |
| Author | Дени Ингилизовски |
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This organic technology experiment video was made within the Wikiexperiments 2022 set up by Shared Knowledge.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:27, 18 January 2023 | 2 min 27 s, 1,920 × 1,080 (89.62 MB) | Dandarmkd | Uploaded own work with UploadWizard |
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