Review on the Modification Methods and Application Prospects of PHA and PLA Materials

Abstract

Plastic pollution worldwide is in trouble with regular plastic piling up in the ocean and fresh water. Biodegradable bioplastics like polyhydroxyalkanoates(PHA), polylacticacid (PLA) etc have been receiving great attention because of their ecofriendly properties. PHA, which is formed by bacteria and other kinds of microorganisms, has good biodegradability, biocompatibility, and environment-friendliness. It can also be used for water purification via filtration membrane, adsorption media, or biofilter support. PLA is biodegradable, biocompatible and sustainable, this can be applied for water purification. Adsorption capacity, Mechanical strength, Hydrophilicity, all can be modified and both are hurting on land and in water, helping with the world's plan to make less plastic mess. Using renewable sources can be broken down under certain circumstances reducing long term water pollution. Second, they have a smaller carbon footpring, because the production and disposal also match the standards of the circular economy. For water purification, they must possess adequate mechanical strength and chemical stability, tunable hydrophilicity or hydrophobicity, and biodegradability so as to avoid secondary pollution. These property can be improved / compounded I look at how they have changed stuff and what people may use it for to clean up water, I write about what problems they might run into right now, and also give some clues about what might happen in the future.

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