Proceedings of China Resource Biotechnology and Sugar Engineering Symposium. 2005 Lignocellulose can be quickly liquefied at normal pressure to prepare polyester type. Research on Degradable Plastic Films Liu Chengmei 12, Liu Yuhuan 1 Ruan Rongsheng 1.2, Zheng Dandan Li Ziling Lin Xiang 1.21. Sino-German Food Engineering Center, Nanchang University, Nanchang, Jiangxi, 3300472. Key Laboratory of Food Science, Ministry of Education, Nanchang, Jiangxi, 330047 Polymer Materials and Fuel Sources This research Cyclic carbonates are used as the liquefaction agent, and it is quickly liquefied to a high-activity biomass-based polyhydroxy mixture with a hydroxyl value of 180350 under normal pressure and the reflux temperature of the liquefaction agent at 120170, and the sample is taken. The polyhydroxy mixture can be polymerized with equivalent polybasic acids and their derivatives to form new polyester materials. Various types of polybasic acids and their derivatives have been used to study the mechanical properties of new polyester materials.　　
　　
　　The results show that the use of non-double bond-free acid, such as succinic acid, can prepare a film-like material with flexible and better elongation at break 2832 and tensile strength close to 5.56. This membrane-like material was buried in the vegetable garden soil for 3 months, the weight loss rate reached 67 or more, and the residual surface was covered with hyphae, attracting a large number of soil-dwelling micro-animals to gather. The new material is capable of developing a new generation of environmentally friendly biodegradable. The potential of mulch.