File:81. Растворање на гума со есенцијални масла.ogg
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[edit]Description81. Растворање на гума со есенцијални масла.ogg |
English: Dissolving rubber with essential oils
The orange peel or the peel of other citrus fruits contains essential oils that are nonpolar hydrocarbons. The most abundant of them all is limonene. On the other hand, the balloons are made out of rubber that is a polymeric chain usually made out of isoprene units (i.e. cis-1,4-polyisoprene). Isoprene like limonene is nonpolar and it is expected for the limonene to dissolve the polyisoprene. When the balloons are inflated, the polymeric chains are stretched and when they come in contact with a solvent like limonene, the balloon wall will dissolve somewhat. As a consequence, the balloon pops. Performed by the Prof. PhD Miha Bukleski. The planning of the experiment also included the retired Prof. PhD Vladimir Petruševski and the students Mihail Trajkov and Darko Stojčev, Department of Chemistry, FNSM, Ss. Cyril and Methodius University, Skopje, Macedonia.Македонски: Растворање на гума со есенцијални масла
Кората од портокалот и другите цитрусни овошја содржи есенцијални масла кои претставуваат неполарни јаглеводороди. Во нив најзастапен е лимоненот. Од друга страна, пак, балоните се составени од гума која претставува полимер на изопренот (cis-1,4-полиизопрен). Изопренот, слично како и лимоненот е неполарен, па се очекува дека лимоненот може да го раствори полиизопренот. Кога балоните се надувани, полимерот е растегнат, па кога ќе дојде во контакт со растворувач, како лимоненот, ѕидот од балонот ќе се подраствори и балонот ќе пукне. Изведено од Проф. д-р Миха Буклески. Во планирањето на опитот, исто така беа вклучени пензионираниот Проф. д-р Владимир Петрушевски, и студентите Михаил Трајков и Дарко Стојчев, Институт за хемија, ПМФ, УКИМ, Скопје, Македонија.Українська: Цікаво, чому повітряна куля лопається? Розчинення каучуку ефірними маслами. Апельсинова шкірка або шкірка інших цитрусових містить ефірні олії, які є неполярними вуглеводнями. Найпоширенішим з них є лімонен. З іншого боку, повітряні кулі виготовлені з гуми, яка є полімерним ланцюгом, зазвичай виготовленим із ізопренових одиниць (тобто цис-1,4-поліізопрену). Ізопрен, як і лімонен, неполярний, і очікується, що лімонен розчиняє поліізопрен. Коли повітряні кулі надуваються, полімерні ланцюги розтягуються, і коли вони контактують з розчинником, таким як лімонен, стінка повітряної кулі дещо розчиняється. В результаті повітряна куля лопає. |
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Source | Own work |
Author | Дени Ингилизовски |
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This file was selected as the media of the day for 22 February 2025. It was captioned as follows:
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Français : La peau des agrumes contient des huiles essentielles qui sont des hydrocarbures non polaires, notamment le limonène. Les ballons de baudruche sont fait en caoutchouc, un élastomère composé de polyisoprènes qui sont également non polaires. Au contact, le limonène de l'agrume va dissoudre les polyisoprènes du ballon, faisant écalter ce dernier. Українська: Цікаво, чому повітряна куля лопається?
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This file was taken during Wikiexperiments 2023 set up by Shared Knowledge.
You can see all the videos and images in the categories Chemistry experiments by Shared Knowledge, Physics experiments by Shared Knowledge, Biology experiments by Shared Knowledge and Wikiexperiments. English | македонски | +/− |
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