Suggest two advantages that PLA has compared with a polymer made from petroleum.

Sure, I can answer that question step by step.

Step 1: Understand the question The question is asking for two advantages of PLA (polylactic acid) compared to a polymer made from petroleum.

Step 2: Research PLA To answer the question, we need to know what PLA is and its properties. PLA is a biodegradable and bio-based polymer made from renewable resources such as corn starch or sugarcane. It is commonly used as a substitute for traditional petroleum-based plastics.

Step 3: Research petroleum-based polymers Next, we need to understand what petroleum-based polymers are and their properties. Petroleum-based polymers, also known as petrochemical plastics, are derived from fossil fuels such as crude oil or natural gas. Examples of petroleum-based polymers include polyethylene (PE) and polypropylene (PP).

Step 4: Identify advantages of PLA over petroleum-based polymers Based on the research, we can now identify two advantages of PLA compared to petroleum-based polymers:

Advantage 1: Environmental impact PLA has a lower environmental impact compared to petroleum-based polymers. Since PLA is made from renewable resources, it reduces dependence on fossil fuels and decreases greenhouse gas emissions. Additionally, PLA is biodegradable, meaning it can break down naturally over time, reducing plastic waste in landfills and oceans.

Advantage 2: Renewable and sustainable Another advantage of PLA is its renewable and sustainable nature. PLA is derived from renewable resources such as corn or sugarcane, which can be grown and harvested repeatedly. In contrast, petroleum-based polymers rely on finite fossil fuel resources, which are non-renewable and contribute to environmental degradation.

Step 5: Summarize the advantages To conclude, PLA has two advantages over petroleum-based polymers. Firstly, it has a lower environmental impact due to its renewable nature and biodegradability. Secondly, it is derived from renewable resources, making it a more sustainable alternative to petrochemical plastics.