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.

泡沫的特点是密度非常低、导热性非常低、声音衰减高和加工成本低。大多数发泡模制品用于寿命相对较短的运输包装，例如用于电子设备和绝缘应用。聚乳酸（PLA）是一种可生物降解的，同时也是一种生物基聚合物，它是由廉价的乳酸以商业上显著的量生产的。为了提供用于由泡沫制成的包装的另外的处置选择/或为了节省化石烃源，期望制备基于可大量获得的PLA的聚合物泡沫。但由于其低熔体强度，PLA的发泡目前是不可能的。该研究项目旨在开发新的和具有成本效益的方法来改性PLA，从而提高熔体强度，从而使PLA的挤出发泡性成为可能。