Effect of Hydroxyethyl Methacrylate/Citric Acid Modification on Mildew Resistance of Bamboo

YE Xiang-yi; LIN Jing; SUN Jie-yu; ZHANG Wei-wei

doi:10.12390/jbr2022026

Volume 41 Issue 2

Sep. 2022

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YE Xiang-yi, LIN Jing, SUN Jie-yu, ZHANG Wei-wei. Effect of Hydroxyethyl Methacrylate/Citric Acid Modification on Mildew Resistance of Bamboo[J]. JOURNAL OF BAMBOO RESEARCH, 2022, 41(2): 15-23. doi: 10.12390/jbr2022026

Citation:

YE Xiang-yi, LIN Jing, SUN Jie-yu, ZHANG Wei-wei. Effect of Hydroxyethyl Methacrylate/Citric Acid Modification on Mildew Resistance of Bamboo[J]. JOURNAL OF BAMBOO RESEARCH, 2022, 41(2): 15-23. doi: 10.12390/jbr2022026

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Effect of Hydroxyethyl Methacrylate/Citric Acid Modification on Mildew Resistance of Bamboo

doi: 10.12390/jbr2022026

1. College of Materials and Energy, South China Agricultural University, Guangzhou 510642, Guangdong, China;
2. National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, Fuzhou 350108, Fujian, China

Received Date: 2022-03-16

Abstract

Abstract

Because bamboo contains starch and other nutrients,it is easy to get mildewed which reduces its appearance quality and commercial value and limits the application of bamboo products.In this study,the mixed solution of hydroxyethyl methacrylate (HEMA) and citric acid (CA) was used to impregnate bamboo.The monomers underwent in situ polymerization and crosslinking reactions,so as to enhance the mildew resistance of the modified bamboo.The results showed that the bamboo modification was optimized when the concentration of HEMA solution was 6%,the molar ratio of HEMA to CA was 4:1,and the crosslinking temperature was 130℃,which achieved 100% efficiency of mildew resistance.The concerned bamboo materials were characterized by IR,TGA and SEM.The results indicated that (1)in situ polymerization and crosslinking reactions between HEMA and CA occurred in bamboo;(2) The equilibrium moisture content of the modified bamboo decreased slightly,but the thermal stability was not improved significantly;(3) The morphology of starch granules in bamboo remained largely intact after the modification.In summary,it is speculated that the improvement of mildew resistance of the modified bamboo is due to the fact that the HEMA/CA polymers impregnate bamboo and form protective films on the surfaces of starch granules,which prevent the direct contact with mold mycelia and hence achieving the anti-mildew effect.
- Bamboo,
- Hydroxyethyl methacrylate,
- Citric acid,
- Mildew resistance

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References(18)

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