Artificial accelerated iron mineralization and structural properties of textiles
Mineralization is a process of transformation from organic to inorganic states.Mineralization of textiles refers to the phenomenon where organic fibers are replaced by inorganic substances.This process is a comprehensive result of the dissolution of inorganic substances,migration of inorganic ions with water molecules,and interactions between inorganic ions and organic molecules.Investigating the mineralization of textiles contributes to understanding the lifestyle,production technologies,and social structures of ancient societies.It helps archaeological conservators in devising more effective methods and strategies for artifact preservation and allows researchers to further discuss the interactions between fiber structures and mineral combination.The scholarly study of archaeomineralized textiles can be traced back to the 18th century.Despite the long history,critical research findings remain scarce,primarily due to the limited availability of samples for study.To address this problem,simulated mineralization experiments were conducted in this paper.Silk fabrics from the Republican era were wrapped around rusted iron pieces and placed in a constant temperature and humidity chamber for mineralization.Samples were retrieved after five and six months and subjected to electron microscope observation,tensile strength testing,infrared spectroscopy analysis,Raman spectrum testing,X-ray diffraction analysis,and stable carbon isotope testing.By comparing these simulated mineralized textiles with Han Dynasty mineralized textiles unearthed in Shanxi province,this paper explored differences between simulated and archaeological mineralized textiles and investigated early phenomena and mechanisms of textile mineralization.It was found that both raw and processed silk samples underwent self-mineralization and pre-mineralization after six months of mineralization.Mixed iron oxides such as goethite/magnetite/lepidocrocite were contained in the samples,but organic components still constituted a significant proportion,indicating an early stage of minerali-zation.Iron mineralization served to protect the fibers,resulting in higher tensile strength compared to aged textiles.The stable carbon isotope ratios of mineralized textiles were lower than those of aged textiles.Simulated mineralized samples exhibited similarities to archaeological mineralized samples,demonstrating phenomena of self-mineralization and pre-mineralization.Protective layers formed by both mineralization methods in burial environments could inhibit microbial degradation and enhance fiber durability,thereby preserving organic components in the fibers.Due to the short mineralization period,this study only addresses the early stages of textile mineralization.Significant organic components remained within the samples,and the uneven mineralization led to some degree of randomness in the experimental results.Nonetheless,these findings contribute to understanding the mechanisms of textile iron mineralization and offer insights into the protection and early stages of textile mineralization.
万方数据
维普
