Abstract
Bamboo pulping fabrics (BPFs), one of the most important textile materials for clothing industry, has many excellent characteristics such as soft, skin-friendly, and hygroscopic, etc., but some drawbacks especially mildewed, causing customers’ concerns. This experiment evaluated effects of two organic acids, acetic acid (AA) and citric acid (CA), as solvents for dissolving chitosan on the antibacterial properties of chitosan-treated BPFs with the intention of replacing AA with CA because previous research finding indicated the strong acid smelling of BPFs treated with chitosan dissolved in AA. Experimental results indicated that BPFs treated chitosan dissolved in CA had a significantly higher antibacterial rate than ones treated with chitosan dissolved in AA within each of five chitosan mass fraction levels investigated. Antibacterial rates of BPFs treated with chitosan dissolved in AA and CA increased as chitosan mass fraction increased, but increasing rates were different between BPFs treated with chitosan dissolved in AA and CA. No acid sour smell was detected for BPFs treated with chitosan dissolved in CA.
Highlights
In recent years, researching and developing functional fabrics such as heat conducting fabrics, conductive fabrics, antibacterial fabrics, UV resistant fabrics, etc.[1] have attracted much of attention
The antibacterial activity of Bamboo pulping fabrics (BPFs) treated with chitosan dissolved in citric acid (CA) was evaluated and compared with ones treated with chitosan dissolved in acetic acid (AA) using the colony count method
The increase of these intensities is more obvious at the characteristic peaks of BPFs treated with chitosan dissolved in CA than AA, for instance, the stretching vibration absorption peaks of -OH at 1017 cm−1 and 3335 cm−1 of the cross-linked BPFs treated with chitosan dissolved in AA were higher than ones in CA
Summary
In recent years, researching and developing functional fabrics such as heat conducting fabrics, conductive fabrics, antibacterial fabrics, UV resistant fabrics, etc.[1] have attracted much of attention. Chitosan is an environmentally friendly antibacterial agent[2] because its molecular structure (Figure 1) has many amino groups that are the main driving force of its antibacterial properties and make it soluble in acid medium,[3] and other reactive sites like hydroxyl for covalently bonding of polymer chains, chemical monomers or small molecules to make biomaterials with special properties.
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