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用于艺术表面清洁的优化半互穿p(HEMA)/PVP水凝胶

Optimized Semi-Interpenetrated p(HEMA)/PVP Hydrogels for Artistic Surface Cleaning.

作者信息

Tamburini Giulia, Canevali Carmen, Ferrario Silvia, Bianchi Alberto, Sansonetti Antonio, Simonutti Roberto

机构信息

Department of Materials Science, University of Milano-Bicocca, 20125 Milan, Italy.

Institute for Heritage Science (ISPC), National Research Council (CNR), 20122 Milan, Italy.

出版信息

Materials (Basel). 2022 Sep 28;15(19):6739. doi: 10.3390/ma15196739.

DOI:10.3390/ma15196739
PMID:36234079
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9571715/
Abstract

The synthesis of hydrogels that are based on poly-hydroxyethyl methacrylate, p(HEMA), network semi-interpenetrated with linear polyvinylpyrrolidone (PVP) was optimized in order to allow both a fast preparation and a high cleaning effectiveness of artistic surfaces. For this purpose, the synthesis parameters of the gel with PVP having a high molecular weight (1300 kDa) that were reported in the literature, were modified in terms of temperature, time, and crosslinker amount. In addition, the gel composition was modified by using PVP with different molecular weights, by changing the initiator and by adding maleic anhydride. The modified gels were characterized in terms of equilibrium water content (EWC), water uptake, conversion grade, and thermal properties by differential scanning calorimetry (DSC). The cleaning effectiveness of the gels was studied through the removal of copper salts from laboratory-stained specimens. Cleaning materials were characterized by electron paramagnetic resonance (EPR) spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, and inductively-coupled plasma-mass spectrometry (ICP-MS). Cleaning was assessed on marble specimens by color variation measurements. The gel synthesis is accelerated by using PVP 360 kDa. The addition of maleic anhydride in the p(HEMA)/PVP network allows the most effective removal of copper salt deposits from marble since it acts as a chelator towards copper ions.

摘要

基于聚甲基丙烯酸羟乙酯（p(HEMA)）网络与线性聚乙烯吡咯烷酮（PVP）半互穿的水凝胶的合成进行了优化，以实现快速制备并提高艺术品表面的清洁效果。为此，对文献中报道的具有高分子量（1300 kDa）的含PVP凝胶的合成参数在温度、时间和交联剂用量方面进行了修改。此外，通过使用不同分子量的PVP、改变引发剂和添加马来酸酐来修改凝胶组成。通过差示扫描量热法（DSC）对改性凝胶的平衡含水量（EWC）、吸水率、转化率和热性能进行了表征。通过从实验室染色标本中去除铜盐来研究凝胶的清洁效果。通过电子顺磁共振（EPR）光谱、紫外可见（UV-Vis）光谱和电感耦合等离子体质谱（ICP-MS）对清洁材料进行了表征。通过颜色变化测量对大理石标本的清洁效果进行了评估。使用360 kDa的PVP可加速凝胶合成。在p(HEMA)/PVP网络中添加马来酸酐能够最有效地去除大理石上的铜盐沉积物，因为它对铜离子起螯合剂的作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/f8fc3eeb084a/materials-15-06739-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/fb28672f25ef/materials-15-06739-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/9b770dc25930/materials-15-06739-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/c3fa58577d77/materials-15-06739-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/9c0f73fcc5e7/materials-15-06739-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/9a74b8c49c38/materials-15-06739-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/a7f747725111/materials-15-06739-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/13810a51a066/materials-15-06739-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/752886d44066/materials-15-06739-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/f8fc3eeb084a/materials-15-06739-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/fb28672f25ef/materials-15-06739-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/9b770dc25930/materials-15-06739-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/c3fa58577d77/materials-15-06739-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/9c0f73fcc5e7/materials-15-06739-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/9a74b8c49c38/materials-15-06739-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/a7f747725111/materials-15-06739-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/13810a51a066/materials-15-06739-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/752886d44066/materials-15-06739-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/120b/9571715/f8fc3eeb084a/materials-15-06739-g009.jpg

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