2020年12月7日 · Polylactic acid (PLA), a plastic substitute made from fermented plant starch (usually corn) is quickly becoming a popular alternative to traditional petroleum-based...

2008年7月1日 · Polylactic acid (PLA), a plastic substitute made from fermented plant starch (usually corn) is quickly becoming a popular alternative to traditional petroleum-based plastics.

2012年9月24日 · In the next two posts, we will describe the process through which field corn is converted to PLA, providing a reliable, commercial supply of this polymer that is so necessary for application engineers to give it serious consideration as a new material.

5 天之前 · PLA can also be used in regular plastic manufacturing plants, so no additional expenditure needs to be made by the companies to switch to PLA plastics. This characteristic also makes it easy to use worldwide. Currently, corn-based plastics are more expensive than petrochemical plastics and corn-based plastics do not stand up as well to extreme ...

2022年2月1日 · This paper undertakes the first comparative meta-analysis of the costs of producing Polylactic Acid (PLA), a leading bio-based plastic polymer, from two alternative feedstocks: corn grain and corn stover. Cost contributions of specific inputs and process stages are identified through a production chain perspective.

Into one end of the complex goes corn; out the other come white pellets, an industrial resin poised to become—if you can believe all the hype—the future of plastic in a post-petroleum world. The...

Polylactic acid (PLA) is a biodegradable alternative that could mitigate harmful impacts from disposal of single-use polyethylene to the environment. This study compares the scaled-up PLA pellets production using two feedstock options, i.e., corn and sugarcane molasses.

2023年7月1日 · We conducted a controlled experiment with polylactic acid microplastics (PLA MPs) to examine the effects of biodegradable plastic on soil properties, corn growth, the microbial community and hotspots of enzyme activity. The results showed that PLA MPs in soil significantly reduced the soil pH value but increased the soil C:N ratio.

2022年11月1日 · This study performs techno-economic and environmental assessments of polylactic acid (PLA) produced via lactic acid from sugarcane juice fermentation in integration with a typical Brazilian ethanol distillery. PLA presents net negative GHG emissions: −0.25 kg CO 2 eq./kg PLA from cradle to factory gate. It shows lower environmental scores ...

2021年5月1日 · The production of PLA from corn (Figure 2) involves three major sections: (1) Starch hydrolysis; (2) Glucose fermentation; and (3) Lactic acid polymerization. Figure 2. The diagram shows the production process for PLA, starting from corn