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脆弱丝织品的Ala/EGDE加固效果 被引量:5

Consolidation of Fragile Fabrics Treated with Ala/EGDE
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摘要 采用丙氨酸(Ala)/乙二醇二缩水甘油基乙醚(EGDE)体系对脆弱丝织品进行加固,发现加固后试样的断裂应力比原样提高了5倍左右。通过红外光谱(FT-IR)、13C固体核磁共振(13C CP/MAS NMR)和氨基酸分析(AAA)对处理过程中Ala、EGDE与丝素蛋白的作用关系进行了探讨研究。FT-IR和13C-NMR分析结果证实,在处理过程中Ala协同EGDE与脆弱丝织品发生了化学交联,AAA结果显示,在处理过程中交联位点主要位于丝素蛋白上的酪氨酸(Tyr)、赖氨酸(Lys)和组氨酸(His)的残基上。研究结果证明,丝素蛋白在EGDE和Ala的作用下发生了交联反应是脆弱丝织品得以加固的根本所在。 The breaking-stress of silk samples treated with alanine/ethylene glycol diglycidyl ether (Ala/E.GDE) increased by 4 times compared with that of original aged sample. The interaction between Ala, EGDE and silk fibroins in the treated process was studied by Fourier transform infrared spectroscopy (FT-IR), solid-state l3C cross polarization/magic angle spinning nuclear magnet resonance (13C CP/qV[AS NMR) and amino acid analysis (AAA). FT-IR and 13 C-NMR measurements prove that EGDE cooperates with Ala in contribution to the formation of crosslinks between adjacent silk fibroins. The results of AAA show that the residues of tyrosine(Tyr), lysine(Lys) and histidine(His) participate in the reaction of consolidation. The crosslinking reaction between silk fibroins formed through Ala and EGDE is the key reason for the significant consolidation effect.
出处 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2013年第3期74-77,共4页 Polymer Materials Science & Engineering
基金 国家文物局重点科研基地项目(2012)
关键词 加固 丝素蛋白 丙氨酸 乙二醇二缩水甘油基乙醚 脆弱丝织品 consolidation silk fibroin alanine ethylene glycol diglycidyl ether fragile silk fabric
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