Cotton Cellulose Dissolution and Transformation to Bioproducts

Date

2023-12

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Abstract

The purpose of this study was to utilize low-quality cotton fiber to make eco-friendly cellulose films, find their suitable application, as well as appropriate environmental settings for their rapid post-use degradation. Furthermore, it emphasized plasma pretreatment of cotton fiber a promising approach to facilitate cellulose dissolution. Low-quality cotton cellulose was transformed into very flexible and transparent cellulose films by dissolving, casting, regeneration, plasticization, and hot pressing. Glycerol plasticization and hot pressing helped to make highly flexible and uniform cellulose films. Additionally, oleic acid functionalization of films reduced the sensitivity of cellulose films to moisture. The investigation on soil burial degradation of cellulose films revealed faster degradation of cellulose films. The rate of degradation was significantly influenced by the weather. Cellulose films underwent significant physicochemical, thermal, and mechanical changes and were completely degraded in 2- to 4-months, regardless of whether they were buried outside or in open fields. According to these findings, cellulose films would be suitable for landfill disposal. The findings from the potential use of cellulose films as soil cover mulch revealed the functionality of cellulose films for about 8 months. After the soil cover experiment, the leftover films were buried in soil beds with regulated moisture to monitor how long it took for complete degradation. The biodeterioration that was initiated during the cover experiment helped promote the disintegration of the films by microorganisms within 80 days after burial The structural complexity of cellulose prevents it from being used to its maximum capacity. In an effort to enhance the dissolution of cotton cellulose in the NaOH/Urea solvent system, cotton fiber was pretreated with microwave oxygen plasma. The pretreatment had an impact on the surface chemistry of cotton fiber. After 20 and 40 minutes of plasma treatment, the molecular weight of cotton cellulose decreased by 36% and 60%, respectively, as well as the crystallinity by 16% and 25%. It facilitated a 34% and 68% improvement in the dissolution of cotton fiber (1% w: v). This study indicated that microwave oxygen plasma pre-treatment could be an effective and environmentally friendly method for enhancing the dissolution of cellulose. The results of this study suggested that microwave oxygen plasma pre-treatment could be an efficient and eco-friendly strategy for improving cellulose dissolution.


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Keywords

Bioproducts, Cotton, Dissolution, Pretreatment

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