Coating of polyamide 12 by sol-gel methodology

被引：13

作者：

de Campos, Beatriz M. ^{[1
]}

Calefi, Paulo S. ^{[1
]}

Ciuffi, Katia J. ^{[1
]}

de Faria, Emerson H. ^{[1
]}

Rocha, Lucas A. ^{[1
]}

Nassar, Eduardo J. ^{[1
]}

Silva, Jorge V. L. ^{[2
]}

Oliveira, Marcelo F. ^{[2
]}

Maia, Izaque A. ^{[2
]}

机构：

[1] Univ Franca, BR-14404600 Franca, Brazil

[2] Ctr Tecnol Informacao Renato Archer, BR-13069901 Campinas, SP, Brazil

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2014年 / 115卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

Rapid prototyping; Sol-gel; Vanadium alkoxide; Thermal analysis; CRYSTALLIZATION; NANOCOMPOSITES; TRANSITION; SUBSTRATE; BEHAVIOR; SPIN; PH;

D O I：

10.1007/s10973-013-3384-9

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The combination of sol-gel methodology with rapid prototyping (RP) produces functionalized 3D structures with potential applications in various fields. However, this combination has been little explored. In this paper, we used the sol-gel method to deposit vanadium isopropoxide onto polyamide (PA12) constructed by RP and pretreated with acetic acid, to obtain a functionalized substrate with new thermal, physical, and chemical properties. Vanadium isopropoxide (one, five, or ten layers) was deposited onto the PA12 piece by dip-coating. We characterized the coated PA12 by thermal analyses, X-ray diffraction, and infrared spectroscopy, which revealed that V=O and Si-O-Si groups exist on the PA12 surface. PA12 coating with vanadium isopropoxide enhanced the decomposition temperature. Differential scanning calorimetry revealed increased fusion and decomposition enthalpy as a function of the PA12 coating. Therefore, deposition of vanadium isopropoxide onto PA12 pretreated with acetic acid improves the thermal stability of PA12 prepared by RP.

引用

页码：1029 / 1035

页数：7

共 49 条

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