Results 61 to 70 of about 114,109 (274)
Advanced Science, EarlyView.A universal paradigm resolves the trade‐off between ambient stability and barrier properties in organic persistent luminescent (OPL) polymers. By interlocking chromophores within a high‐barrier MXD6 matrix, we achieved no Pre‐photoactivation OPLs with exceptional long‐term stability in water.
Yunlong Yang +10 more
wiley +1 more source
Selective Sequential Depolymerization of Mixed Plastics Mediated by Photothermal Conversion
Angewandte Chemie, EarlyView.This work provides a selective sequential depolymerization strategy for mixed plastic waste. The method enables depolymerization of poly(L‐lactide), polystyrene, and poly(ethylene terephthalate), including their post‐consumer plastics. Without presorting, monomer separation is achieved by leveraging the distinct chemical reactivities of each polymer in
Yoon‐Jung Jang +4 more
wiley +2 more sources
AMINOLYSIS OF POLY(ETHYLENE TEREPHTHALATE)
Sen'i Gakkaishi, 1975 Reactivities of amines and reaction regions in aminolysis of PET fibers were investigated by using various primary amines, ammonia, and hydrazine. Aminolysis occurs randomly and the reaction rate is decreased in the order of MA>HH>EA>n-PA>n-BA>EDA>AM>MEA>iso-BA>sec-BA.
Yamazaki, Noboru, Tonami, Hiroaki
openaire +2 more sources
Synthesis of metal nanoparticles for use as nanocatalysts in pet recycling
Acta Scientiarum: Technology, 2019 This study investigated the efficiency of nickel nanocatalysts in the degree of PET conversion, under different conditions. The nanocatalysts were synthesized by the Pechini method at 500, 700 and 900ºC. PET depolymerization, via chemical glycolysis, was
Luciana Cristina Soto Herek Rezende +5 more
doaj +1 more source
Advanced Science, EarlyView.Plant‐based nanomaterials derived from alfalfa serve as dual‐function catalysts, coupling photodegradation and phytoremediation to degrade polyethylene under UV‐A light and in soil. The nanomaterials work synergistically with alfalfa and soil microbes, achieving efficient plastic breakdown without trophic transfer.
Haoran Liu +4 more
wiley +1 more source
Selective Degradation of Polyurethanes in Mixed Plastic Wastes via Ir‐Catalyzed Hydrogenolysis
Angewandte Chemie, EarlyView.The selective degradation of polyurethanes in mixed plastic wastes with polyesters and polyamides was achieved using H2 as a reactant, enabling simultaneous recovery of diformamides and polyols arising from polyurethanes and separation of polyesters and polyamides without any degradation.
Yuto Yamada +3 more
wiley +2 more sources
Chemical recycling and repolymerization of poly(ethylene terephthalate), poly(ethylene furanoate), and their copolyesters [PDF]
RSC AdvancesReplacing fossil-based plastics with bio-based ones is vital for future sustainability. However, bio-based plastics are not recycled within current recycling feeds, as polymers generally do not mix.
Lauri Välinen +2 more
doaj +1 more source
Surface and Interfacial Engineering toward Durable Mechanically Coupled Flexible Electronics
Advanced Science, EarlyView.This Review highlights how surface and interfacial engineering governs the reliability, durability, and functional stability of mechanically coupled flexible electronics. By integrating fundamental interfacial theory, failure mechanisms, multiscale engineering strategies, and representative applications, it provides a design‐oriented framework for ...
Qian Wang, Fangfang Dai, Wei Wu
wiley +1 more source
Recycling of Mixed Poly(Ethylene-terephthalate) and Poly(Lactic Acid)
MATEC Web of Conferences, 2019 Nowadays, PLA is increasingly used as a packaging material, therefore it may appear in the petrol-based polymer waste stream. However, with the today’s mechanical recycling technologies PLA and PET bottles cannot be easily or cheaply separated. Therefore,
Gere Daniel, Czigany Tibor
doaj +1 more source
Piezo‐Coupling Effects in Smart Polymers: Toward Ultrasensitive Sensing and Biomedical Applications
Advanced Science, EarlyView.Piezo‐coupling effects are the foundational factors for the development of multifunctional and self‐powered platforms. Central to this advancement is the use of stimuli‐responsive smart polymers, which offer mechanical flexibility, biocompatibility, and simplified structural complexity with improved sensitivity and energy efficiency.
Duc Khanh Tran +6 more
wiley +1 more source