Breaking It Down: How Thermoplastic Starch Enhances Poly(lactic acid) Biodegradation in Compost─A Comparative Analysis of Reactive Blends
نویسندگان
چکیده
Poly(lactic acid) (PLA) is a sustainable, bio-based, and industrially compostable polymer with recalcitrant abiotic degradation phase, limiting its organic recovery to well-managed industrial composting facilities. We present methodology fully biodegrade PLA in home settings. Thermoplastic starch (TPS) were reactively blended by adding chemical modifier peroxide radicals obtain PLA-g-TPS blend twin screw extrusion later processed into films cast extrusion. Biodegradation of the was investigated using direct measurement respirometer for 180 days tracking CO2 evolution compost media at 58 37 °C, number average molecular weight (Mn) reduction measured size exclusion chromatography. The hydrophilic nature TPS role as nutrient source accelerated both biotic phases process. kinetic curve Mn showed positive effect on accelerating hydrolysis during lag phase mesophilic thermophilic conditions due increased chain mobility. This work unlocks capability PLA-based be successfully composted without compromising their desired properties applications everyday life.
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متن کاملImpact, thermal and biodegradation properties of high impact polystyrene/corn starch blends processed via melt extrusion
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ژورنال
عنوان ژورنال: ACS Sustainable Chemistry & Engineering
سال: 2023
ISSN: ['2168-0485']
DOI: https://doi.org/10.1021/acssuschemeng.3c01676