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Pyrolysis Characterization of Nepalese Handmade Paper
Received:March 07, 2024  
DOI：10.11980/j.issn.0254-508X.2024.10.002
Key Words:Nepalese paper  handmade paper  Py-GC/MS  fiber analysis
Fund Project:国家文物局文物科学技术研究项目（2023ZCK008）；中央高校基本科研业务费资助。
Author NameAffiliationPostcode
GE Mengfan University of Chinese Academy of Sciences， Beijing， 100049 100049
HAN Bin* University of Chinese Academy of Sciences， Beijing， 100049 100049
SHI Jiatong Beijing Institute of Graphic Communication， Beijing， 102600 102600
SHI Jilong Beijing Institute of Graphic Communication， Beijing， 102600 102600
YANG Yimin University of Chinese Academy of Sciences， Beijing， 100049 100049
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Abstract:This study analyzed Nepalese handmade paper utilizing microscopic observation and pyrolysis-gas chromatography-mass spectrometry （Py-GC/MS） techniques. Based on fiber characteristics and plant markers， the raw materials and manufacturing process of Nepalese handmade paper were investigated. The results showed that the three pieces of Nepalese handmade papers were mainly made of daphne fibers， and the fibers were cut off and weakly treated with alkali during the handmade process. The lignin basic structural unit of daphne fibers was mainly syringyl， and the characteristic compounds of terpenes and plant sterols included sitosterol， ergosterol， stigmasterol， and cholesterol， with the highest content of stigmasterol. Furthermore， pyrrole and its derivatives in the pyrolysis products of the Nepalese handmade paper were detected， indicating that animal glue was appiled during the papermaking process.
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