How can biodegradable plastic bags be degraded?

Synthetic biodegradable plastic bags in the world so far has no unified international standard definition, but usually is defined as: under the biodegradable plastic bags in specific environmental conditions, the chemical mechanism has obvious changes, using standard test method can change the material performance of plastic chain of biodegradable plastic bags in the garbage disposal system or the natural environment, Microbes biodegrade it, eventually turning it into carbon dioxide (or methane) and water in a combined biological cycle, completely absorbed by the environment without leaving any polymers.

Degradation mechanism of biodegradable plastic bags:

Most synthetic pure polymers are resistant to microbial attack. But additives (such as plasticizers, lubricants, pigments, antioxidants, etc.) reduce this ability. Plasticizer residual fatty acids such as stearate esters can be degraded by microorganisms and lead to damage to the polymer surface, properties, and even infrastructure. It is known that microbial degradation of natural polymers is accomplished through the biosynthesis of enzyme proteins. These enzyme proteins can land on the cell wall or exist in the protoplasmic structure of the cell. Some are able to sneak into the environment, while others remain in the cell and are released only when the cell is dissolved or mechanically broken. Enzymes have only a highly specific catalytic capacity for biochemical reactions that proceed rapidly under suitable physiological conditions.

There are two kinds of biodegradable plastic degradation methods, which can be divided into (1) the biological degradation of the physics: when microbial attack after erosion of polymer materials, because of the biological cell growth make hydrolysis, ionization or proton polymer components and split into pieces of the oligomer, polymer molecular structure remains the same, this is the polymer biophysical function of the degradation process. (2) Biochemical degradation method: due to the direct action of microorganisms or enzymes, the polymer is decomposed or oxidized into small molecules, until the final decomposition into carbon dioxide and water. This degradation method belongs to the biochemical degradation method.

Commonly used recyclable small bags are made of the following materials:

1. Biodegradable Stand-Up Pouch With Zipper, Material:  Kraft paper+ VMPET+PE or MOPP+VMPET+ PE

2. Biodegradable Flat Bottom Coffee Bag With Zipper, Material: MOPP+VMPET+ PE or Kraft paper+ VMPET+PE

Guangdong Soonseal Packaging Technology Co. Ltd is committed to the application and research and development of biodegradable plastic bag environmental protection materials, the development of biodegradable packaging products to meet the needs of various market areas, clothing packaging biodegradable plastic bags, logistics express packaging bags, shopping bags, and other products to provide degradation solutions for environmental protection packaging bags in various fields, products are widely used. It has entered into foreign cooperation in apparel, textile, electronics, home appliances, food, cosmetics, and other fields. With a professional R&D technical team, capable sales team, and perfect after-sales service system.