Results 21 to 30 of about 17,869 (307)
Recycling of polyurethanes: where we are and where we are going [PDF]
, 2023 Polyurethanes (PUs) represent a family of useful synthetic polymers (thermoplastic or thermosetting) obtained from diisocyanates and diols/polyols via polycondensation reactions.
Rossignolo G. +2 more
core +3 more sources
Lignocellulosic Biomass as a Source of Raw Materials for the Synthesis of Polyurethanes
Proceedings, 2018 Precursors have been satisfactorily synthesized from lignocellulosic biomass for later use in the synthesis of polyurethanes resulting in competitive final properties with those of petroleum derived polyurethanes.
Tamara Calvo-Correas +6 more
doaj +1 more source
Molecules, 2023 Due to growing concerns about environmental issues and the decline of petroleum-based resources, the synthesis of new biobased compounds for the polymer industry has become a prominent and timely topic.
Aliénor Delavarde +4 more
doaj +1 more source
The Vaginal Microbiota, Bacterial Biofilms and Polymeric Drug-Releasing Vaginal Rings
Pharmaceutics, 2021 The diversity and dynamics of the microbial species populating the human vagina are increasingly understood to play a pivotal role in vaginal health. However, our knowledge about the potential interactions between the vaginal microbiota and vaginally ...
Louise Carson +6 more
doaj +1 more source
Molecules, 2019 Polyurethanes are widely used in the development of medical devices due to their biocompatibility, degradability, non-toxicity and chemical versatility.
Yomaira L. Uscátegui +6 more
doaj +1 more source
Polyurethanes with components made of renewable resources and recyclates
, 2016 The Fraunhofer Institute for Chemical Technology (ICT) is part of the Fraunhofer-Gesellschaft, which is the largest research organization in Europe. In the department of Environmental Engineering new sustainable products and processes are developed and ...
Anders, T.
core +1 more source
Continuous Production of Water-Borne Polyurethanes: A Review
, 2020 Water-borne polyurethanes are novel functional polymers that use water as the dispersion medium. When compared with solvent-borne polyurethanes, water-borne polyurethanes are more environmentally friendly and easier to transport and store.
Xudong Chen, Xuehua Liu, Wei Hong
core +1 more source
POLYURETHANE COMPOSITES AS DRUG CARRIERS:: RELEASE PATTERNS [PDF]
Biotechnologia Acta, 2013 Biodegradable polyurethanes attract interest of those developing composite materials for biomedical applications. One of their features is their ability to serve as carriers, or matrixes, for medicines and other bioactive compounds to produce a ...
M. V. Grigoreva
doaj +1 more source
Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading
Advanced Engineering Materials, EarlyView.This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev +2 more
wiley +1 more source
Toxics, 2023 In this paper we produced a bio-based polyether-polyurethane foam PU1 through the prepolymer method. The prepolymer was obtained by the reaction of PEG 400 with L-Lysine ethyl ester diisocyanate (L-LDI).
Fabrizio Olivito +2 more
doaj +1 more source