Effect of physical ageing on properties of PLA plasticized with oligomeric esters of lactic acid

被引：2

作者：

Castaldo, R. ^{[1
]}

Ambrogi, V. ^{[2
]}

Avella, M. ^{[1
]}

Avolio, R. ^{[1
]}

Carfagna, C. ^{[1
]}

Cocca, M. ^{[1
]}

Errico, M. E. ^{[1
]}

Gentile, G. ^{[1
]}

机构：

[1] CNR, ICTP, Via Campi Flegrei 34, I-80078 Pozzuoli, Italy

[2] Univ Naples Federico II, Dept Chem Mat & Prod Engn, I-80125 Naples, Italy

来源：

TIMES OF POLYMERS (TOP) AND COMPOSITES 2014 | 2014年 / 1599卷

关键词：

Poly(lactic acid); plasticization; mechanical properties; physical ageing; migration test;

D O I：

10.1063/1.4876797

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Two oligomeric esters of lactic acid with carboxyl or hydroxyl terminal groups were employed to plasticize polylactic acid. The miscibility of the blends as well as the mechanical, thermal and gas/vapour transport properties were tested as a function of plasticizer content and of physical ageing. A ductile PLA behavior was obtained with the addition of at least 20 wt% of both esters supplying an increase of elongation at break values higher than 400%. These blends retain their ductile feature also after ageing. Finally migration tests proved the compliance of these materials with the EU regulation for food contact plastics.

引用

页码：138 / 141

页数：4