Facile preparation of lightweight high-strength biodegradable polymer/multi-walled carbon nanotubes nanocomposite foams for electromagnetic interference shielding

被引：380

作者：

Kuang, Tairong ^{[1
,2
]}

Chang, Lingqian ^{[2
]}

Chen, Feng ^{[2
,3
]}

Sheng, Yan ^{[2
]}

Fu, Dajiong ^{[1
,2
]}

Peng, Xiangfang ^{[1
]}

机构：

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

[2] Ohio State Univ, NSEC Ctr Affordable Nanoengn Polymer Biomed Devic, Columbus, OH 43210 USA

[3] Zhejiang Univ Technol, Coll Mat Sci & Engn, Hangzhou 310014, Zhejiang, Peoples R China

来源：

CARBON | 2016年 / 105卷

基金：

中国国家自然科学基金; 浙江省自然科学基金;

关键词：

FIBER-COMPOSITE FOAMS; MECHANICAL PERFORMANCE; ELECTRICAL-PROPERTIES; PERCOLATION; NETWORKS;

D O I：

10.1016/j.carbon.2016.04.052

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Lightweight conductive polymer composites (CPCs) have been considered as the most promising alternatives to metal-based shields for electromagnetic interference (EMI) shielding application but still face non-degradation issues. We report a facile, inexpensive and green method to implement lightweight biodegradable poly (L-lactic acid) (PLLA)-multiwalled carbon nanotubes (MWCNTs) nanocomposite foams using a combinatorial technology of pressure-induced flow (PIF) processing and supercritical carbon dioxide (Sc-CO2) foaming. Such low-density (similar to 0.3 g/cm(3)), low thickness (similar to 2.5 mm), high compressive strength (similar to 54 MPa g(-1) cm(3))) and highly conductive (similar to 3.4 S m(-1)) PLLA-MWCNT nanocomposite foams were first reported as an EMI shielding material: it presents high performance EMI shielding with a remarkable effectiveness and a corresponding average specific EMI SE of similar to 23 dB and similar to 77 dB g(-1) cm(3), respectively, with less reflection in the measured X-band frequency region. Considering the simple, low-cost and eco-friendly fabrication process, the lightweight, high-strength and highly conductive biodegradable polymer composite foams are expected to be used as high-performance EMI shielding materials in areas such as electronics, automobiles and packaging. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：305 / 313

页数：9

共 34 条

[1] Electrical properties and electromagnetic interference shielding effectiveness of polypropylene/carbon fiber composite foams [J].