Why can PLA and PBAT become the darling of degradable plastics?

As we all know, in order to change the environmental problem of "white pollution" in China and achieve the goal of "double carbon", relevant departments have repeatedly issued "plastic restriction" and "plastic ban" documents with high frequency and density, and vigorously promoted the replacement of traditional plastic materials and degradable plastics.

Among the many alternative materials, PBAT and PLA stand out, occupying half of the degradable plastics market, so why are the two materials? What are the advantages that make them the darling of the degradable plastics market?

First, let’s understand the current state of the plastics market before introducing the two materials in detail

From the perspective of degradability, related materials can be divided into biodegradable plastics, photodegradable plastics, water-degradable plastics, etc.

Secondly, the comparison and selection of biodegradable plastics

Biodegradable plastics generally include: First, synthetic fully biodegradable polymer materials (aliphatic polyesters such as PLA, PBAT, PBS, PPC, PGA, and aliphatic-aromatic copolyesters)

The industrialization potential of degradable plastics is affected by various factors such as performance, modification difficulty, synthesis technology and price.

At present, the degree of industrialization of PLA and PBAT is relatively high, and it is also the direction of vigorous development in China

PLA

PLA, also known as polylactide, is named because it is mostly prepared by the ring-opening polymerization of lactic acid cyclic dimer (ie, lactide).

PBAT

PBAT, a copolymer of butylene adipate and butylene terephthalate, has both the properties of PBA and PBT, and has good ductility, elongation at break, heat resistance and impact resistance , and has excellent biodegradability

Therefore, PLA and PBAT have become the best answer for market selection due to their excellent application performance and practicality, and have been highly recognized by the market, and eventually quickly occupy half of the degradable plastics market