Carbon Nanotube-Directed Polytetrafluoroethylene Crystal Growth via Initiated Chemical Vapor Deposition

被引：30
作者：
Laird, Eric D. [1 ]
Bose, Ranjita K. [2 ]
Wang, Wenda [1 ]
Lau, Kenneth K. S. [2 ]
Li, Christopher Y. [1 ]
机构：
[1] Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA
[2] Drexel Univ, Dept Chem & Biol Engn, Philadelphia, PA 19104 USA
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2013年 / 34卷 / 03期
基金：
美国国家科学基金会;
关键词：
coatings; crystallization; fluoropolymers; nano-composites; polytetrafluoroethylene; FLUOROCARBON FILMS; SUPERCRITICAL CO2; THIN-FILMS; PTFE; FUNCTIONALIZATION; FLUOROPOLYMERS; ENCAPSULATION; EVAPORATION; SOLUBILITY; EVOLUTION;
D O I：
10.1002/marc.201200678
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Initiated chemical vapor deposition (iCVD) has been shown to be suitable for blanketing surfaces with thin polymer coatings of approximate to 1-2 nm and greater. In this work, iCVD coatings of polytetrafluoroethylene (PTFE) deposited on carbon nanotube (CNT)-based surfaces show CNT-templated PTFE single crystal growth. While the coating forms disoriented agglomerates when deposited on an amorphous carbon background, "shish-kebab" structures are observed when grown on single-walled carbon nanotubes (SWCNT) as well as CNT buckypaper. It is shown that the shish-kebab structure is composed of PTFE lamellae arranged with the chain backbones running parallel to the SWCNT axis. This result allows one to control not only the surface chemistry using PTFE but also the coating surface topology.
引用
收藏
页码：251 / 256
页数：6
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