Production of Biodegradable Foams Using Supercritical CO2

被引：4

作者：

Kelly, C. A. ^{[1
]}

Murphy, S. H. ^{[1
]}

Hillerstrom, A. ^{[2
]}

Gilling, J. ^{[3
]}

Massoudi, S. ^{[1
]}

Jenkins, M. J. ^{[1
]}

Leeke, G. A. ^{[1
]}

机构：

[1] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

[2] SP Tech Res Inst Sweden, Drottning Kristinas Stoc, Sweden

[3] Pera, Melton Mowbray, Leics, England

来源：

POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING | 2014年 / 53卷 / 11期

关键词：

Biodegradable polymers; Extrusion; Foaming; Packaging; Supercritical fluid; MELTING-POINT DEPRESSION; CARBON-DIOXIDE; POLY(DL-LACTIC ACID); POLY(LACTIC ACID); POLYMERS; PLASTICIZATION; RHEOLOGY; CRYSTALLIZATION; EXTRUSION; COPOLYMER;

D O I：

10.1080/03602559.2014.886114

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A single screw extrusion process in which CO2 is injected into the polymer melt has been utilized to produce low density biodegradable poly(DL-lactic acid) (P(DL)LA) foams. High pressure differential scanning calorimetry (DSC) and rheology are used to observe the melting point and viscosity depression of P(DL)LA 3051D in the presence of CO2. Foams of P(DL)LA 3051D are produced in a static environment under a range of conditions, and these data are utilized to extrude P(DL)LA 3051D into foamed sheets for packaging applications. The density, crystallinity, mechanical properties and microstructure of these foams are evaluated.

引用

页码：1169 / 1177

页数：9

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