New biodegradable polyester amide material successfully developed

Researchers at the Chengdu Institute of Organic Chemistry of the Chinese Academy of Sciences recently developed a completely degradable polyester amide material that has been successfully used in disposable tableware, films, and fibers. According to reports, with polyolefin-based polymer/starch blends and other photodegradable or biodegradable packaging materials, agricultural materials, it is impossible to achieve 100% biodegradation, resulting in white pollution and secondary white pollution. Aliphatic polyester biodegradable polymer materials can only be obtained using special synthetic methods and processes, resulting in expensive materials that are difficult to popularize. Therefore, research and development of a new class of materials with high performance-to-price ratio and 100% environmental absorption or environmental degradation are of great significance for protecting the ecological environment and eliminating white pollution. Dr. Liu Xiaobo and other researchers used hydroxy acid to synthesize amide diols, and then esterified directly with long-chain aliphatic dibasic acids to prepare biodegradable polyester amides and their copolymers, and then used biodegradable carboxyl-terminated polyesters and amides. The reagents are directly reacted and extruded in a reactive twin-screw extruder to prepare biodegradable polyester amides and copolymers. The technology has the characteristics of continuous and stable product quality, and has not been reported in the literature at home and abroad. The researchers used disposable bio-degradable polyester amides and copolymers to prepare disposable tableware, biodegradable films, fibers, and a variety of color masterbatch. Their mechanical properties, biodegradability, and toxicity met the application requirements and met or exceeded the requirements of foreign countries. The technical level of similar products. All the raw materials for preparation are based in China, and the synthetic preparation process is reasonable and non-polluting. It can be widely used in a biomedical material product, biodegradable packaging material, biodegradable fiber, sustained-release pharmaceutical preparations, and the like.