Surface characterization of binary grafting of AAc/NIPAAm onto poly(tetrafluoroethylene) (PTFE)

被引：34
作者：
Adem, E
Avalos-Borja, M
Bucio, E
Burillo, G
Castillon, FF
Cota, L
机构：
[1] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico
[2] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico
[3] Univ Nacl Autonoma Mexico, Ctr Ciencias Mat Condensada, Ensenada 22800, Baja California, Mexico
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2005年 / 234卷 / 04期
关键词：
grafting; PVDF; AAc; NIPAAm; SEM; XPS; contact angle;
D O I：
10.1016/j.nimb.2005.02.009
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The present study shows results on radiation grafting of acrylic acid (AAc) and N-isopropylacrylamide (NIPAAm) mixtures onto polytetrafluoroethylene (PTFE) films. The main objective is to use the modified polymer for immobilization of the avidin-streptavidin systems or other bio-compounds. Grafting onto PTFE was carried out by the pre-irradiation oxidative method in air at different dose rates and irradiation doses. The irradiation was produced with the electron beam of a 2 MV van de Graaff accelerator, and gamma-rays, from a Gamma Beam 651 PT. The samples were placed in glass ampoules with the AAc and NIPAAm mixtures, in an aqueous solution. Graft polymerization was performed by heating of the polymer-monomer composition in an argon atmosphere at temperature of 50 degrees C. Surface funcionalization was studied by X-ray photoelectron spectroscopy (XPS); morphology of the surface was studied by scanning electron microscopy (SEM) and hydrophylization of the surface, by contact angle measurements (static method). (c) 2005 Elsevier B.V. All rights reserved.
引用
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页码：471 / 476
页数：6
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