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Hiroshi Uyama

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Sep 2026

Upcycling Waste Cyclic Poly(phenylene sulfide) as Valuable Movable Crosslinkers for Toughening and Ring-Size-Controlled Enzymatic Degradation of Polycaprolactone

Reconciling mechanical robustness with controlled end-of-life degradability represents a central challenge in the design of sustainable polymeric materials. Here, we develop a solvent-free in situ ring-opening polymerization strategy for incorporating size-specific cyclic poly(phenylene sulfide) macrocycles (c[n]PS,...

Bin Sun, Jia-Xiong Liu, Kenji Yamaoka et al. · 0 citations
Open access Aug 2026

Mechanically Robust and Recyclable Diels–Alder Networks from a Degradable Cellulose-Based Matrix

Designing sustainable polymer materials that combine mechanical robustness with recyclability remains a significant challenge. Here, we report a cellulose-based Diels–Alder (DA) cross-linked network that integrates structural strength, thermoreversible recyclability, and tunable biodegradability. Cellulose was functi...

Yazhou Su, Akihide Sugawara, Hiroshi Uyama · 0 citations
Open access Sep 2026

Effect of Cellulose Chain Extender on the Molecular, Thermal, and Mechanical Characteristics of Polyurethane Foam

This study investigates the incorporation of cellulose as a bio-based modifier into polyurethane foam and its effects on molecular interactions, morphology, thermal behavior, and mechanical performance. Polyurethane foam was synthesized using polypropylene glycol (PPG 2000), toluene diisocyanate (TDI), water, and cellu...

Rina Ningtyas, Muhammad Emirsyah Putra, Dea Talitha Syahara et al. · 0 citations
Review Open access Aug 2026

Recent advances in designing high-performance and enzymatically degradable plastics

Plastics have become indispensable in modern life, yet their end-of-life waste continues to accumulate, causing severe environmental pollution and posing risks to ecosystems and human health. This urgent challenge has driven the development of sustainable plastics as alternatives to conventional persistent plastics, am...

Jia-Xiong Liu, Xin Zhou, Hiroshi Uyama et al. · 1 citation
Aug 2026

Rapidly Thermoresponsive Poly( N -isopropylacrylamide) Hydrogels Enabled by Itaconic Acid-Modified Cellulose Fiber Cross-Linkers

Stimuli-responsive hydrogels capable of reversible volume change are promising materials for soft actuators, sensors, and biomedical systems. However, conventional poly(N-isopropylacrylamide) (PNIPAAm) hydrogels typically exhibit slow thermal responses due to limited water transport and the formation of a dense skin...

Qian-Ying Li, Akihide Sugawara, Hiroshi Uyama · 0 citations

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