Drag-reducing agents have been widely used in hydraulic fracturing processes to conserve energy. However, most of them are not biodegradable, thus posing a threat to ecosystems. In this study, we synthesized a series of biodegradable copolymers, PLLA-PEG-PLLA and PDLA-PEG-PDLA, and prepared their stereocomplexes. Shear viscosity measurements were conducted to study how the polymer structures and stereocomplexation lead to different rheological properties in a brine solution.
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Deng et al. (2026) studied this question.
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