用牛奶和醋制作塑料!Using milk to make plastic!

我们用牛奶和醋制作塑料!(wǒ men yòng niú nǎi hé cù zhì zuò sù liào!) We used milk and vinegar to make plastic!

我们用牛奶和醋制作塑料!(wǒ men yòng niú nǎi hé cù zhì zuò sù liào!) We used milk and vinegar to make plastic!

As the kids have been finding out more and more about what other kids are doing to help work towards the UN’s Global Goals, they found Elif Bilgin’s story, a young 16 year old girl who worked out how to make plastic from banana peel, very inspiring!  The kids identified that her hard work has contributed to the goals of ‘Industry Innovation’, ‘Responsible consumption and production’ and ‘Good health and wellbeing’and Life Below Water!

So the kids learned a little about how plastics are made and the damage they can cause , and wanted to learn more about making plastic from things other than petroleum …and found a science experiment in one of their books for making a form of plastic out of milk!  They did a little more research and found a few online videos.  So below is their experiment step by step…in Mandarin and English.

Our milk plastic was not bad! But in doing this little activity we can also appreciate Elif’s long road of trial and error, she role models commitment, risk-taking, open-mindedness and creativity to create a really usable practical ‘plastic’ towards achieving our sustainable development goals. Elif’s video was a great springboard and inspiration for our kids to learn about the science, social issues, environmental issues and health issues of plastic, and try their own very first experiment in making such a material! At the bottom of the post is the video that helped them! We might try banana peel next time!

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实验材料: 纸巾,勺子,饼干模子,四勺醋,一杯牛奶,滤器。(shí yàn cái liào : zhǐ jīn , sháo zi , bǐng gān mú zi , sì sháo cù , yī bēi niú nǎi , lǜ qi). Experiment materials: paper towel, tea spoon, biscuit shape cutter, 4 teaspoons vinegar, I cup milk, a sieve or strainer.

首先加热一杯牛奶

首先加热一杯牛奶。 (shǒu xiān jiā rè yī bēi niú nǎi). First, heat one cup of milk

加入醋的牛奶中会慢慢出现固体。

加入四勺醋搅拌约一分钟。(jiā rù sì sháo cù jiǎo bàn yuē yī fēn zhōng). Add 4 teaspoons of vinegar and mix for about a minute.

加了醋的牛奶中会慢慢出现固体。

加了醋的牛奶中会慢慢出现固体。(jiā le cù de niú nǎi zhōng huì màn màn chū xiàn gù tǐ ). The milk mixed with the vinegar will slowly start to form solid bits (curdle).

把它倒入滤器中,过滤一会儿,挤出多余的水分。

把它倒入滤器中,过滤一会儿,挤出多余的水分。(bǎ tā dǎo rù lǜ qì zhōng , guò lǜ yī huìr , jǐ chū duō yú de shuǐ fèn). Put the mixture through the strainer, squeezing out all the liquid.

现在你应该得到了这样一团固体,放在纸巾上。 纸巾会吸收一切液体。

现在你应该得到了这样一团固体,放在纸巾上。 纸巾会吸收一切液体。(xiàn zài nǐ yīng gāi dé dào le zhè yàng yī tuán gù tǐ , fàng zài zhǐ jīn shàng 。 zhǐ jīn huì xī shōu yī qiè yè tǐ). Now scrape out the solid bits, and put on the paper towel to absorb all the remaining liquid.

然后捏起来有点像面团,你可以用饼干模子把它做成各种你喜欢的形状。(rán hòu niē qǐ lai yǒu diǎn xiàng miàn tuán , nǐ kě yǐ yòng bǐng gān mú zi bǎ tā zuò chéng gè zhǒng nǐ xǐ huan de xíng zhuàng). Then

然后捏起来有点像面团,你可以用饼干模子把它做成各种你喜欢的形状。(rán hòu niē qǐ lai yǒu diǎn xiàng miàn tuán , nǐ kě yǐ yòng bǐng gān mú zi bǎ tā zuò chéng gè zhǒng nǐ xǐ huan de xíng zhuàng). Then pinch together the solids like dough and uses the biscuit cutter to make whatever shapes you like.

等待2天左右。牛奶塑料就会慢慢变硬。děng dài 2 tiān zuǒ yòu 。 niú nǎi sù liào jiù huì màn màn biàn yìng 。

等待2天左右。牛奶塑料就会慢慢变硬。(děng dài 2 tiān zuǒ yòu 。 niú nǎi sù liào jiù huì màn màn biàn yìng). Wait about 2 days. Your milk plastic will slowly get harder!

上色,装饰 (shàng sè , zhuāng shì) add colour, and decorate

上色,装饰 (shàng sè , zhuāng shì) add colour, and decorate

牛奶塑料艺术大作就完成啦!(niú nǎi sù liào yì shù dà zuò jiù wán chéng lā!) Milk plastic work of art finished yeah!

牛奶塑料艺术大作就完成啦!(niú nǎi sù liào yì shù dà zuò jiù wán chéng lā!) Milk plastic work of art finished yeah!

Here is the video the kids used to help them, one small tip, make sure the milk is  加热了(jiā rè le) ‘heated’ first or it won’t work. (Not to boiling point though).  Thanks to this guy for the materials image we used too, but with Mandarin instead of English!

 

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