Extrusion foamability of the modified biopolymer polylactide (PLA)

改性生物聚合物聚丙交酯（PLA）的挤出发泡性能

• 批准号: 242427360
• 负责人: Professor Dr.-Ing. Volker Altstädt
• 金额: --
• 依托单位: Institut für Kunststofftechnik (IKT)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2016-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/242427360?language=en
• 关键词: Extrusion; foamability; modified; biopolymer; polylactide

Foams are characterized by very low density, very low thermal conductivity, high sound attenuation and low tooling costs. Most of the foamed mouldings are for relatively short-lived transport packaging, e.g. for electronic equipment and insulation applications. Polylactide (PLA) is a biodegradable and at the same time, a biobased polymer which is produced in commercially significant amounts from the inexpensive lactic acid. To provide an additional disposal option for packaging made of foam / or to save fossil hydrocarbon sources, it is desirable to prepare polymeric foams on the basis of PLA which is available in large quantities. But due to its low melt strength, foaming of PLA is currently not possible. This research project aims to develop new and cost-effective ways to modify PLA, leading to an increased melt strength and therefore to enable the extrusion foamability of PLA.

泡沫的特征是密度非常低，导热率非常低，高声衰减和工具成本较低。大多数泡沫装饰件用于相对短暂的运输包装，例如用于电子设备和绝缘应用。聚乳肽（PLA）是一种可生物降解的，同时是一种生物基的聚合物，从廉价的乳酸中以商业意义产生。为了为泡沫 /或节省化石碳水化合物的包装提供额外的处置选项，希望根据PLA大量可用的PLA准备聚合物泡沫。但是由于其低熔体强度，目前无法使用PLA的泡沫。该研究项目旨在开发新的且具有成本效益的方法来修饰PLA，从而提高熔体强度，从而实现PLA的挤压泡沫性。