Influence of initiators on the growth of poly(ethyl 2-cyanoacrylate) nanofibers

被引：20
|
作者：
Mankidy, Pratik J. [1 ]
Rajagopalan, Ramakrishnan [2 ]
Foley, Henry C. [1 ,2 ,3 ]
机构：
[1] Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USA
[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA
[3] Penn State Univ, Dept Chem, University Pk, PA 16802 USA
来源：
POLYMER | 2008年 / 49卷 / 09期
基金：
美国国家科学基金会;
关键词：
polymer nanofibers; poly(ethyl 2-cyanoacrylate); synthesis;
D O I：
10.1016/j.polymer.2008.03.018
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The type of anionic initiator used to polymerize ethyl 2-cyanoacrylate was found to influence the morphology of the polymer formed via vapor phase polymerization. Depending upon the type of initiator, polymerization of ethyl 2-cyanoacrylate resulted in either the formation of neat polymer nanofibers (similar to 200 nm in diameter) or thin films. Based on the classification of anions using Hard Soft Acid Base principles, we found that harder anions favored polymer film formation while softer ones favored polymer nanofibers. Infrared (IR) spectroscopy, scanning electron microscopy (SEM) and gel permeation chromatography (GPC) were used to characterize the structure, morphology and molecular weight of the synthesized polymers, respectively. Finally, a mechanism of formation of different polymer morphologies is proposed. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2235 / 2242
页数：8
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