Superior Impact Toughness and Excellent Storage Modulus of Poly(lactic acid) Foams Reinforced by Shish-Kebab Nanoporous Structure

被引：79

作者：

Geng, Lihong ^{[1
,2
,3
]}

Li, Lengwan ^{[1
]}

Mi, Haoyang ^{[2
]}

Chen, Binyi ^{[2
]}

Sharma, Priyanka ^{[3
]}

Ma, Hongyang ^{[3
]}

Hsiao, Benjamin S. ^{[3
]}

Peng, Xiangfang ^{[1
,2
]}

Kuang, Tairong ^{[1
,2
]}

机构：

[1] South China Univ Technol, Minist Educ, Key Lab Polymer Proc Engn, Natl Engn Res Ctr Novel Equipment Polymer Proc, Guangzhou 510640, Guangdong, Peoples R China

[2] South China Univ Technol, Sch Mech & Automot Engn, Dept Ind Equipment & Control Engn, Guangzhou 510640, Guangdong, Peoples R China

[3] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2017年 / 9卷 / 25期

关键词：

poly(lactic acid); shish-kebab; nanoscale pores; SC-CO2LTFP (supercritical carbon dioxide low temperature foaming process); soaking temperature; ORIENTED ISOTACTIC POLYPROPYLENE; CRYSTALLIZATION; COMPOSITES; POLYLACTIDE; BEHAVIOR; FIBER; POLYCARBONATE; NANOCOMPOSITE; SUCCINATE); HIERARCHY;

D O I：

10.1021/acsami.7b05127

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Poly(lactic acid) (PLA) foams, with the combination of shish-kebab and spherulite nanoporous structure in skin and core layer respectively, was prepared using a novel technique comprising loop oscillating push pull molding (LOPPM) and Supercritical carbon dioxide low-temperature foaming process, (SC-CO2LTFP): The foams present superior impact toughness which is 6-fold higher than that of heat PLA, and no. significant decrease was observed for the storage modulus. Moreover, SC-CO2LTFP at soaking temperature ranging from 110 to 150 degrees C were performed to determine the evolution of pore morphology. The ultiatough and supermoduli are unprecedented for PLA, and are in great need for broader applications.

引用

页码：21071 / 21076

页数：6

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