All-natural, hydrophobic, biodegradable cellulose-based straws through simultaneous esterification and filling with stearic acid for cold beverages.

Int J Biol Macromol

Key Laboratory of Bio-based Materials Science and Technology of Ministry of Education, Northeast Forestry University, No. 26 Hexing Road, Xiangfang District, Harbin 150040, PR China. Electronic address:

Published: December 2024

AI Article Synopsis

  • Disposable plastic straws contribute to serious environmental pollution through microplastics that harm both human health and marine life.!
  • This study developed a natural, cellulose-based straw using bleached bamboo fibers and stearic acid, which showed excellent water resistance and biodegradability.!
  • The new straw is fully effective for various beverages, breaking down in soil within 50 days, thus presenting a sustainable alternative to plastic straws and reducing environmental impact.!

Article Abstract

Disposable plastic straws have caused severe environmental pollution because microplastics produced in the degradation process harm human health and marine ecosystems. Paper straws as substitutes need to be incorporated into hydrophobic agents and other chemicals to achieve hydrophobicity, which may be harmful to human health. In this study, a novel and purely natural hydrophobic cellulose-based straw was made from bleached bamboo fibers (BBF) and stearic acid (SA). The prepared straw (BBF/SA@straw) exhibited improved hydrophobicity, biodegradability, and applicability. The water absorption rate was maintained at 58.66 % using single-factor analysis and response surface methodology and the maximum water contact angle was up to 133. Additionally, the paper straw was almost completely degraded after 50 days in soil. Moreover, it could be used normally in water at 0 °C and 25 °C and was suitable for various beverages (tea, coffee, coke, and milk), demonstrating an extensive application prospect. This work supplies a promising and green alternative to plastic straws, alleviating the burden of white pollution in the environment.

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http://dx.doi.org/10.1016/j.ijbiomac.2024.137676DOI Listing

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