What are the degradation methods of BOPP thermal sensitive synthetic paper?

The degradation mode of BOPP (biaxially oriented polypropylene) thermosensitive synthetic paper mainly involves the biodegradation process. The following is a detailed explanation of its degradation mode:

1、 Principle of biodegradation

The biodegradation of BOPP thermosensitive synthetic paper mainly relies on the action of microorganisms. Under appropriate temperature and humidity conditions, microorganisms can decompose organic substances in BOPP thermosensitive synthetic paper, gradually leading to its degradation. During this process, microorganisms utilize the carbon source in the paper for growth and reproduction, while producing carbon dioxide, water, and other biodegradable products.

2、 The role of degradation additives

In order to achieve the biodegradability of BOPP thermosensitive synthetic paper, specific biodegradable additives are usually added during its production process. These additives can enhance the sensitivity of paper to microorganisms without affecting its normal performance, thereby accelerating the degradation process. These additives are usually composed of natural high molecular weight substances (such as starch, cellulose, etc.) or artificially synthesized biodegradable polymers.

3、 Degradation process

Microbial attachment: When BOPP thermosensitive synthetic paper is discarded in natural environments such as landfills or soil, microorganisms will first attach to the surface of the paper.

Degradation begins: Under the action of microorganisms, additives and some polypropylene chains on the surface of the paper begin to decompose. This process may be accompanied by surface damage and color changes on the paper.

Gradual degradation: With the deep action of microorganisms, the internal structure of BOPP thermosensitive synthetic paper is gradually destroyed. Degradation products (such as carbon dioxide, water, etc.) are released into the environment.

Complete degradation: Under suitable conditions, BOPP thermosensitive synthetic paper can ultimately be completely degraded into harmless environmental substances. The duration of this process depends on various factors, including the type and quantity of microorganisms, environmental conditions (such as temperature, humidity, etc.), and the type and content of additives in the paper.

4、 Degradation conditions

The biodegradation process of BOPP thermal sensitive synthetic paper requires suitable environmental conditions. Usually, higher temperatures and humidity are beneficial for the growth and reproduction of microorganisms, thereby accelerating the degradation process. In addition, appropriate oxygen supply is also necessary for microorganisms to carry out aerobic respiration. However, in practical applications, due to the complexity of environments such as landfills, degradation conditions may not always be ideal. Therefore, in order to promote the biodegradability of BOPP thermosensitive synthetic paper, additional measures may need to be taken to optimize the degradation environment.

In summary, the degradation mode of BOPP thermosensitive synthetic paper mainly depends on the biodegradation process and is influenced by various factors such as degradation additives, microbial species and quantity, environmental conditions, etc. Through reasonable formula design and environmental optimization measures, the biodegradability of BOPP thermal sensitive synthetic paper can be effectively improved, thereby reducing its negative impact on the environment.