Preparation and properties of chitosan/chitosan⁃grafted⁃graphene oxide composite aerogels

doi:10.19491/j.issn.1001-9278.2022.09.005

Abstract

Abstract:

The adsorption films based on chitosan （CS）/chitosan⁃g⁃graphene oxide （CS⁃g⁃GO） composite aerogels were prepared through vacuum freeze⁃drying at different mass ratios of two raw materials， and their physical and chemical properties were investigated using SEM， FTIR， and contact angle meter. The results indicated that the filtration efficiency of the composite aerogels reached 94.1 % for PM2.5 filtration at a WCS mass of 0.155 6 g and a grafting rate of 76.04 wt% for CS⁃g⁃GO， which increased by 4.4 % compared to the aerogels without CS⁃g⁃GO.

Key words: chitosan, chitosan grafted graphene oxide, aerogel, fine particulate matter, adsorption

CLC Number:

TQ322.9

CHEN Shuhua, REN Zimeng, SUN Tingting. Preparation and properties of chitosan/chitosan⁃grafted⁃graphene oxide composite aerogels[J]. China Plastics, 2022, 36(9): 32-37.

Figures/Tables 12

实验序号	W_CS⁃g⁃GO∶W_CS
1	100∶1 273
2	100∶1 400
3	100∶1 556
4	100∶1 750

Tab.1. Mass ratio of CS to CS⁃g⁃GO

Fig.1. Appearance of the aerogel samples

Fig.2. Schematic diagram of filter device

Fig.3. SEM micrographs of the different aerogel samples

Fig.4. Water contact angle diagram of pure CS chitosan and CS/CS⁃g⁃GO composite aerogel

Fig.5. FTIR spectrum of the CS aerogel and CS/CS⁃g⁃GO composite aerogel

Fig.6. Effect of different chitosan content and grafting rate on the porosity of composite aerogel

Fig.7. Effect of different WCS⁃g⁃GO∶WCS on the porosity of composite aerogels

Fig.8. Effect of different chitosan content and grafting rate on the water vapor transmission rate of aerogel

Fig.9. Effect of different WCS⁃g⁃GO∶WCS on the water vapor transmission rate of composite aerogel

Fig.10. Influence of different chitosan content and grafting rate on the filtration efficiency of aerogel

Fig.11. Effect of different WCS⁃g⁃GO： WCS on the filtration efficiency of composite aerogels

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