包装与食品机械2025，Vol.43Issue(2)：96-102,7.DOI:10.3969/j.issn.1005-1295.2025.02.012
定向氧化竹粉制备透明性聚乙烯醇复合薄膜
Preparation of transparent polyvinyl alcohol films by oriented oxidation of bamboo powder
摘要
Abstract
To enhance the comprehensive utilization rate and added value of bamboo resources,the natural bamboo powders were subjected to acid H2O2 To enhance the comprehensive utilization and added value of bamboo resources,natural bamboo powder was used as the raw material.Lignin was removed via acidic H2O2 solution treatment,followed by selective oxidation of the delignified bamboo powder using sodium periodate.The oxidized bamboo powder was then blended with polyvinyl alcohol(PVA)solution to prepare transparent films(PVA,5-DBP,and 5-OBP)with varying compositions via a solution casting process.Chemical analysis was employed to determine the bamboo powder composition.X-ray diffraction(XRD)and Fourier transform infrared spectroscopy(FTIR)were utilized to characterize the bamboo powder before and after treatments.The optical,mechanical,and waterproof properties of the films were investigated.Results showed that lignin content in bamboo powder significantly decreased to 4.11%after acidic H2O2 treatment.Upon oxidation,the aldehyde group content increased to 4.21 mmol/g,while crystallinity decreased.The 5-OBP film exhibited excellent optical properties with transmittance and haze values of 90.38%and 6.45%,respectively.Compared to pure PVA film,the tensile strength of 5-OBP film increased from 33.24 MPa to 38.95 MPa,and the water contact angle improved from 38° to 66.5°.This study paves a new pathway for implementing the"Bamboo as a Substitute for Plastics"strategy.关键词
天然竹粉/脱除木质素/高碘酸钠/聚乙烯醇/透明薄膜Key words
nature bamboo powder/delignification/sodium periodate/polyvinyl alcohol/transparent films分类
轻工业引用本文复制引用
陈祥慈,庄宁,张灿,莫书森,田升升,游峰,郑华明..定向氧化竹粉制备透明性聚乙烯醇复合薄膜[J].包装与食品机械,2025,43(2):96-102,7.基金项目
国家级大学生创新创业训练项目(202410490002) （202410490002）
武汉工程大学校内科学研究基金项目(K201469) （K201469）
