材料科学与工程学报2024，Vol.42Issue(3)：468-477,10.DOI:10.14136/j.cnki.issn1673-2812.2024.03.016
淀粉包覆改性市政污泥用于制备新型纸板材料及其性能
Preparation and Properties of Starch Modified Municipal Sludge Based New Paperboard Material
摘要
Abstract
The harmless municipal sludge has been used as a paper filler to replace fibers in paper-based materials,which is an efficient way to mitigate the wood shortage.However,this paper-based material with the addition of municipal sludge has poor mechanical properties.To solve this problem,the coating effect of different starch,such as cationic starch,corn starch,and potato starch on municipal sludge was investigated,as well as the mechanical properties of the paper-based material.Subsequently,the morphology,thermal stability and chemical composition of paper-based materials prepared by pure fibers,coated fillers and non-coated fillers were studied.Moreover,the coating mechanism of cationic starch and its enhancement mechanism to the mechanical properties of paper-based materials were explored.As a result,2.5%coating amount of cationic starch obtained the best performance,with the retention rate of 79.58%and the tensile index of 8.99 N·m·g-1,representing an improvement of 66.76%and 45.71%over the non-coated sample,respectively.The tensile index was 42.25%higher than that of pure fiber samples.These improvements were attributed to the promotion of hydrogen bond formation between fillers and fibers by the starch coatings.It also improved the mechanical properties and thermal stability of the material,as well as the retention rate of fillers.Therefore,the high-retention and high-performance paperboard material could be prepared with municipal sludge fillers with starch coatings.These findings provide theoretical and technical support for the utilization of municipal sludge as a novel paper filler,promoting the development of low-carbon cycles in the paper industry.关键词
淀粉包覆改性/市政污泥新型填料/机械性能/资源再利用Key words
Starch coating modification/New filler of municipal sludge/Mechanical properties/Resource reuse分类
资源环境引用本文复制引用
李昊津,郑君,卫灵君,孙昊,王亚玲,董春好..淀粉包覆改性市政污泥用于制备新型纸板材料及其性能[J].材料科学与工程学报,2024,42(3):468-477,10.基金项目
江苏省食品先进制造装备技术重点实验室自主研究课题资助项目(FMZ201905) （FMZ201905）
