Abstract
As the living standard improves, disposable sanitary and household paper requires not only softness or easy to fluff in a dry state, but also good antibacterial property. In this study, a series of alkyl quaternary ammonium salts (AQAS), a kinds of antibacterial-debonding agents, were synthesized by using a two-step process. The SN2 nucleophilic substitution reaction was designed between triethanolamine and sulfoxide chloride, and followed subsequent quaternization by tertiaryamines with different long alkyl chains. The obtained products can be used as an antibacterial and softening/debonding agent for improving the performance of paper or fluff pulp. The results showed that these new compounds can endow antibacterial function and high softness to paper or control appropriate burst strength to fluff pulp. These AQAS products can be not only used in daily disposable sanitary products, but also have potential applications in other products such as glass spacer paper, advanced household paper, or antibacterial tissue products to prevent microbial contamination.
Highlights
With an improvement in people's living standard, there has been an increasing demand for disposable sanitary,such as women’s sanitary napkins, baby diapers and adult incontinence products (Cordella et al 2015; Ajmeri and Ajmeri 2016; Widen et al 2017; Mendoza et al 2019)[2-5]
The results showed that these new compounds can endow antibacterial function and high softness to paper or control appropriate burst strength to fluff pulp board
The peak at 3.35 ppm belonges to methyl of N+-CH3, the peak at 3.42 ppm is attributed to the methylene (N+-CH2-CH2-CH2-) of alkyl quaternary ammonium salts (AQAS) 2a and the methylene peak of N-CH2 was observed at 3.62 ppm
Summary
With an improvement in people's living standard, there has been an increasing demand for disposable sanitary,such as women’s sanitary napkins, baby diapers and adult incontinence products (Cordella et al 2015; Ajmeri and Ajmeri 2016; Widen et al 2017; Mendoza et al 2019)[2-5]. Since most disposable sanitary products have close contact with human body, high antibacterial activity during uses is usually desired. In most cases, the main material, fluff pulp, used to prepare these disposable sanitary products has no antibacterial activity (Forsgren-Brusk et al 2017). There is a clear need to develop special softening agents for this kind of papers or debonding agents for fluff pulp board. In order to make the final tissue products possess high antibacterial activity and at the same time create enough softness or appropriate burst strength, antibacterial agents (Hayashi et al 2019; Xu et al 2020) and softening/debonding agent (Igarashi et al.2016) are usually added together during the papermaking process. It is imperative to come up with a concoction as antibacterial-debonding agent to endow paper or fluff pulp with antibacterial and softening/debonding effects
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