4. The result of the polymerization is small pieces of raw material polylactic acid plastic which can be converted into an array of PLA plastic products. What are the benefits of PLA products? PLA requires 65% less energy to produce than traditional, petroleum-based plastics. It also emits 68...
根据第三段中 “Although it's bio-based, PLA, which is categorized as a number 7 plastic, doesn't bread down easily. It can float in fresh or salt water for a year without degrading (降解). It is also rarely recycled because like many plastics, when it's melted down and re-formed,...
( )13. What's the "girl" made of? A. Paper. B. Clay. C. Plastic.( )14. When did Mary learn to make the dolls? A. One year ago. B. Two years ago. C. Three years ago.( )15. What can we learn from the conversation? A. Mary will make a doll for her brother. B...
What looks like normal oil-based plastic at first glance is actually polylactic acid (PLA) plastic made from specially processed crops. That's right: corn plastic. You can drink coffee out of it, put groceries in it, wear it and even hang ten on it on a corn plastic surfboard. Most ...
PLA is made from ‘ingeo’ – which is a plastic pellet derived from corn by NatureWorks LLC. NatureWorks does not divert a significant amount of corn from the world food supply in making ingeo, but the company is still working to use other raw materials to create whatever the ‘next ing...
A quality control employee checks containers made from corn plastic as they come out of the forming machine. AP Photo/Nati Harnik To date, the greatest volume of research on the biodegradability of eco-plastics is regarding bioplastics, and specifically PLA, the most common, starch-based kind....
Where PLA has an advantage over plastic One benefit of PLA, when compared with plastics, is that it is made from renewable resources. Rather than crude oil, PLA requires crops that can be grown year after year. What’s more, these crops draw down carbon when they are grown, so are pull...
Traditionally, PE, PP, and PET-coated paper’s films belong to plastic; they are all non-biodegradable and non-compostable. They’re recyclable but cost a little high. Fortunately, a new craft solves this problem in recent years. It is PLA-coated paper, aka biodegradable coated paper. ...
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