Results 171 to 180 of about 55,528 (294)

Successive Mechanical Recycling of Poly(lactic Acid) by Injection Molding: Evolution of Molecular, Thermal, and Mechanical Properties

open access: yesMacromolecular Materials and Engineering, EarlyView.
This study investigated how successive injection molding recycling affects the properties of poly(lactic acid) (PLA). Gel permeation chromatography showed a two‐thirds molar mass reduction after ten reprocessing cycles. Differential scanning calorimetry revealed lower glass transition and cold crystallization temperatures.
László Lendvai   +4 more
wiley   +1 more source

Catalyst‐Free Mass Polymerization and Characterization of Bio‐Polyhydroxhyurethanes Based on Resorcinol Bis(Cyclocarbonate)

open access: yesMacromolecular Materials and Engineering, EarlyView.
Non‐isocyanate polyhydroxyurethanes (PHUs) were synthesized from resorcinol bis(cyclocarbonate) and eco‐friendly diamines under mild, catalyst‐free conditions. The resulting polymers were extensively characterized for their structural, thermal, and mechanical properties, as well as processability and adhesion performance.
Federico Olivieri   +9 more
wiley   +1 more source

Pathways in Agro-Industrial Waste Upcycling: A Review of Sustainable Textile Innovations and Economic Perspectives. [PDF]

open access: yesPlants (Basel)
Dantas MP   +6 more
europepmc   +1 more source

Bio‐Based Epoxy Resins from Estragole: Achieving High Glass Transition Temperatures Comparable to DGEBA and Simultaneously Low Viscosities

open access: yesMacromolecular Materials and Engineering, EarlyView.
Two novel bio‐based epoxy monomers, diglycidyl‐4‐allylphenol (DG‐4A) and triglycidyl‐diallylphenol (TG‐DA), derived from estragole (92% and 72% bio‐content), were synthesized and cured with isophorone diamin (IPDA) and 4,4´‐diaminodiphenyl sulfone (DDS). The resins show high Tgs, with DG‐4A reaching and TG‐DA exceeding DGEBA‐based systems. These resins
Florian Bauer   +4 more
wiley   +1 more source

Development and Characterization of Laminated Composites from Açaí Residues and Castor Oil-Based Polyurethane Matrix. [PDF]

open access: yesPolymers (Basel)
Gaby Filho JB   +7 more
europepmc   +1 more source

Advancements in Mass Spectrometry‐Based Glycomics in Food and Nutritional Science

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT This review highlights advancements in mass spectrometry (MS)‐based glycomics in food and nutritional science. Carbohydrates, which are vital for human health, exhibit complex structures, making their analysis challenging. MS has become an indispensable tool for elucidating the structures of carbohydrates, including glycans, through soft ...
JaeHui Song   +3 more
wiley   +1 more source

Incidence and Mortality Risks of Gastrointestinal Cancers During Working‐Age Period: Trends and Disparities in 204 Countries and Territories (1990–2021)

open access: yesMed Research, EarlyView.
This comprehensive analysis of gastrointestinal (GI) cancer risk reveals that globally, one in 46 people will develop and one in 73 will die from GI cancers during working age (15–64 years), with 2021 incidence and mortality risks of 2.19% and 1.37%, respectively. Key findings demonstrate striking gender disparities, with males facing nearly double the
Yiming Song   +14 more
wiley   +1 more source

Association between serum bicarbonate and low mid‐upper arm circumference in patients with non‐dialysis‐dependent chronic kidney disease: A cross‐sectional study

open access: yesNutrition in Clinical Practice, EarlyView.
Abstract Background Although previous experimental studies showed that metabolic acidosis promoted muscle catabolism and impaired protein synthesis, few epidemiological studies reported an independent association between serum bicarbonate levels and muscle atrophy in patients with chronic kidney disease (CKD).
Nobuhisa Morimoto   +13 more
wiley   +1 more source

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