Photochemical stability of poly(vinyl pyrrolidone) in the presence of collagen

被引：15

作者：

Sionkowska, Alina ^{[1
]}

Kozlowska, Justyna ^{[1
]}

Planecka, Anna ^{[1
]}

Skopinska-Wisniewska, Joanna ^{[1
]}

机构：

[1] Nicholas Copernicus Univ, Fac Chem, PL-87100 Torun, Poland

来源：

POLYMER DEGRADATION AND STABILITY | 2008年 / 93卷 / 12期

关键词：

Poly(vinyl pyrrolidone); Collagen; Polymer blends; UV irradiation;

D O I：

10.1016/j.polymdegradstab.2008.08.010

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 photochemical stability of poly(vinyl pyrrolidone) (PVP) in the presence of 1%, 3% and 5% of collagen has been studied by UV-vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), thermogravimetry analysis (TG) and derivative thermogravimetry (DTG). Surface properties have been studied by contact angle measurements. PVP samples and samples containing 1%, 3% and 5% of collagen were irradiated with UV light of wavelength lambda = 254 nm in air for up to 24 h. The amount of gel created during UV irradiation was estimated. PVP in the presence of 1%, 3% and 5% of collagen is less stable both thermally and photochemically. Collagen enhances photochemical processes leading to crosslinking of PVP. The contact angle measurements and values of surface free energy showed that the wettability of PVP films was changed by the addition of collagen and by UV irradiation. The increase of polarity of samples indicates an efficient photooxidation on the surface upon UV irradiation. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：2127 / 2132

页数：6

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