绿色塑料聚乳酸的关键技术研发与产业化应用

聚乳酸(PLA)作为一种新型生物基绿色塑料,能够广泛应用于多种领域,为解决环境污染和石油依赖等问题提供有力的材料支撑。中国科学院长春应用化学研究所针对当前聚乳酸产业化存在的关键科学和技术性难题,开展了生物基聚乳酸绿色塑料产业化关键技术的创新性研发及应用推广项目,从L-乳酸出发,突破了乳酸低聚、裂解、丙交酯精制和开环聚合等一系列关键技术问题,取得了一系列创新性成果,在世界上继美国Nature Works后第二个实现了PLA规模化生产和应用,加速推动了以聚乳酸为龙头的生物可降解塑料行业的发展。本文综述了聚乳酸关键技术研发与产业化项目的重要意义,已取得的阶段性成果,并针对聚乳酸产业化在我国的发展提出了许多对策建议。

Key Technology R & D and Industrial Applications of Biodegradable Plastics Polylactic Acid

As a new bio-based green plastic,polylactic acid (PLA) can be widely used in various fields.It can provide strong material support to solve environmental pollution and oil dependence.For the current existence of key scientific and technical problems in polylactic acid industry,CAS Changchun Institute of Applied Chemistry carry out innovative projects to promote development and application of key technologies of biological polylactic acid green plastic industrialization.It makes a breakthrough of a series of key technical problems on L-lactic acid,lactic acid oligomerization break,cracking,refining and lactide ring-opening polymerization and makes a series of innovative achievements.It achieved the world''s second large-scale production and application of PLA after the US and accelerate the polylactic acid as the leading biodegradable plastics industry development.This article reviews the importance of polylactic key technology development and industrialization projects and the good results which has achieved.It put forward some suggestions of polylactic acid for industrial development in China.